User's Manual

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DLT2000/DLT2500/DLT2700

Cartridge Tape Subsystem

Product Manual

Date: 19 January 96

Order Number: 81-109132-03

Summary of content (345 pages)

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® DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem Product Manual Date: 19 January 96 Order Number: 81-109132-03
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Quantum reserves the right to make changes and improvements to its products, without incurring any obligation to incorporate such changes or improvements in units previously sold or shipped. You can request Quantum publications from your Quantum Sales Representative, or order them directly from Quantum.
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The following FCC Notice applies to the DLT2000 drive: FCC NOTICE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in residential installation. Any changes or modifications made to this equipment may void the user’s authority to operate this equipment.
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The following FCC Notice applies to DLT2500 and DLT2700 mini-library: FCC NOTICE: This equipment has been tested and found to comply with the limits for a Class A device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
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Table of Contents . CHAPTER 1: OVERVIEW AND FEATURES OF THE DLT2000/DLT2500/DLT2700 PRODUCT 1.1 IN THIS CHAPTER .............................................................................................................1-1 1.2 PRODUCT OVERVIEW .......................................................................................................1-1 1.3 FAST DATA TRANSFER RATE ...........................................................................................1-2 1.4 HIGH-CAPACITY .................
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Table of Contents 3.2.2 Changing the SCSI ID ............................................................................................3-4 3.2.3 Setting the TRM ENB (Single-ended only)/TRM PWR Jumpers...........................3-5 3.2.4 Locating the SCSI Cable and Power Connectors....................................................3-6 3.3 SELECTING DENSITY ........................................................................................................3-7 3.4 OVERVIEW OF THE FRONT PANEL...........
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Table of Contents 4.9.1 Tape Cartridge, positioning the write-protect switch............................................4-20 4.9.2 Data protection .....................................................................................................4-21 4.10 DESCRIPTION OF THE MAGAZINE..................................................................................4-22 4.10.1 Insert cartridge, magazine...................................................................................4-23 4.10.
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Table of Contents 6.3 BACKUP OPERATION FAILURE ..........................................................................................6-3 6.4 AVOIDING BASIC PROBLEMS ............................................................................................6-4 6.5 DLT2500 ERROR CONDITIONS ........................................................................................6-5 6.5.1 DLT2500 Magazine Error ......................................................................................6-5 6.5.1.
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Table of Contents 8.4.1 Control Byte - Flag and Link Bits.........................................................................8-14 8.4.2 Summary of Supported Sequential-Access Device Commands............................8-15 8.4.3 ERASE (19h)........................................................................................................8-16 8.4.4 INQUIRY (12h) ...................................................................................................8-17 8.4.4.1 Drive Inquiry Response ..
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Table of Contents 8.4.14.2 Data Mode .................................................................................................8-94 8.4.14.3 Descriptor Mode ........................................................................................8-94 8.4.15 READ POSITION (34h) ....................................................................................8-96 8.4.15.1 READ POSITION Data Format.................................................................8-97 8.4.
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Table of Contents A.3.2 DLT2000 Timing Characteristics ...................................................................... A.3.3 DLT2500xt Media Loader Timing Characteristics............................................ A.3.4 DLT2700 Media Loader Timing Characteristics............................................... A.4 ENVIRONMENTAL SPECIFICATIONS .............................................................................. A.4.1 Temperature and Humidity .................................................
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Table of Contents List of Figures 2-1 DRIVE FRONT PANEL .......................................................................................................2-3 2-2 CHANGING THE SCSI ID VIA THE PUSHBUTTON SWITCHPACK (LATER MODEL) ..............2-5 2-3 REAR PANEL COMPONENTS .............................................................................................2-6 3-1 DLT2000 DRIVE CONNECTORS .......................................................................................
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Table of Contents 8-10 LOAD-UNLOAD CDB ..............................................................................................8-25 8-11 LOCATE CDB............................................................................................................8-27 8-12 LOG SELECT CDB ...................................................................................................8-28 8-13 LOG PAGE CONTROL DEFINITIONS..............................................................................
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Table of Contents 8-53 DISCONNECT/RECONNECT PAGE FORMAT ...................................................................8-84 8-54 MEDIUM PARTITION PAGE FORMAT .............................................................................8-85 8-55 ERROR RECOVERY PAGE FORMAT ...............................................................................8-86 8-56 PREVENT/ALLOW MEDIUM REMOVAL CDB ....................................................8-89 8-57 READ CDB...........................................
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Table of Contents A-3 MOUNTING HOLE DIMENSIONS (SIDE VIEW)............................................................... A-10 D-1 EEROM LOG AREA LAYOUT ........................................................................................ D-2 D-2 BUGCHECK LOG PACKET LAYOUT................................................................................ D-3 D-3 POST LOG PACKET LAYOUT ....................................................................................... D-4 D-4 EVENT LOG PACKET LAYOUT ...
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Table of Contents List of Tables 2-1 ADDING A TERMINATOR ..................................................................................................2-7 2-2 POST--RIGHT SIDE INDICATORS ......................................................................................2-8 2-3 AFTER POST ...................................................................................................................2-9 2-4 DLT2000 TROUBLESHOOTING CHART...............................................................
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Table of Contents A.3 DLT2500 MINI-LIBRARY PHYSICAL SPECIFICATIONS ................................................... A-7 A.4 DLT2700 MINI-LIBRARY PHYSICAL SPECIFICATIONS ................................................... A-8 A-5 DLT2000 TIMING CHARACTERISTICS ......................................................................... A-11 A-6 DLT2500XT MEDIA LOADER TIMING CHARACTERISTICS ........................................... A-12 A-7 DLT2700 MEDIA LOADER TIMING CHARACTERISTICS ......................
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Table of Contents xviii-DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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REVISION HISTORY This Revision History provides a concise publication record of this manual. It lists the manual revision levels, release dates, and reasons for the revisions. Manual No. - Rev Level Date Summary of Changes 81-109132-01 April 14, 1995 Original issue 81-109132-02 August 18, 1995 Specifications and illustrations were upgraded. DLT2500 Mini-library section add. 81-109132-03 January 19, 1996 Caution added for unloading a tape cartridge. AC Power Cord spec’s added.
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Revision History xx - DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Preface To the Reader: QUANTUM makes every effort to ensure the accuracy of information. However, some errors may have been introduced inadvertently; they will be corrected in the next release. QUANTUM recognizes that some users may require additional content. We welcome your feedback and your suggestions for enhancements and we will evaluate your input for a future release.
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Preface Structure of This Manual Chapter 1, Overview and Features of the DLT2000/DLT2500/DLT2700 Product, gives a product overview and lists the product features of the DLT2000/DLT2700 tape subsystem. Chapter 2, Installing and Configuring the DLT2000 Tabletop Drive, describes installing and configuring the DLT2000 tabletop tape drive.
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1 Overview and Features of the DLT2000/DLT2500/DLT2700 Product 1.1 In This Chapter Chapter 1 includes the following main topics and sections: Topic Section Product Overview Fast Data Transfer Rate High-Capacity Compaction Strong Media Compatibility Firmware Update Capability Embedded Diagnostics 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.
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Overview and Features of the DLT2000/DLT2500/DLT2700 Product The DLT2700 is a tape mini-library that performs automatic tape operations. The DLT2700 includes the tape drive and a 7-cartridge SCSI-2 medium changer device (loader). The mini-library provides unattended backup of 140 GB in less than 16 hours or up to 70 GB in an 8-hour shift in a compressed mode. The drive and mini-libraries are available in a rackmountable form factor.
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Overview and Features of the DLT2000/DLT2500/DLT2700 Product The user can select tape density for the CompacTape III cartridge on the loader or drive front panel or by using the SCSI MODE SELECT command. The DLT2000/DLT2500/DLT2700 can write 2.6, 6.0, and 10.0 GB tape formats for 100% interchange compatibility with earlier DLT drives using the CompacTape III cartridge. On a write from BOT, the DLT2000/DLT2500/DLT2700 reformats the CompacTape III cartridge recorded at 2.6, 6.0, or 10.
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Overview and Features of the DLT2000/DLT2500/DLT2700 Product 1-4 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Chapter 2 Installing and Configuring the DLT2000 Tabletop Drive 2.1 In This Chapter Chapter 2 includes the following main topics and sections: Topic Section Prepare for the Installation Install the Subsystem Configure the DLT2000 Tabletop Connect the Cables Test the Installation DLT2000 Troubleshooting Chart 2.2 2.3 2.4 2.5 2.6 2.7 2.
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Installing and Configuring the DLT2000 Tabletop Drive 2.2.2 Installation Setup The steps for installation setup are: Step 1 2 3 Action Unpack and check your shipment. Choose a site for the DLT2000 tabletop subsystem. Power off the system on which the DLT2000 tabletop subsystem is to be installed. 2.2.3 Site Setup Place the DLT2000 on a flat, sturdy, level area such as a desk or tabletop. 2.2.
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Installing and Configuring the DLT2000 Tabletop Drive Figure 2-1 shows the DLT2000. 6 6. 0 R .0 H 10 C om pr es s d oa n nl to U ut t o B gh T i ss L re P t ai his t W n pe pe O dle Ta an ve o em H t ad gh Lo Li o T t ai his t W n pe O dle pe a T an H rt se his t In se lo e C dl an se U ed g e n ct in at dle ni te te e e a pe per an ri ro ap Us Cle Ta W P O H T 2.
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Installing and Configuring the DLT2000 Tabletop Drive 2.3 Install the Subsystem To install the DLT2000: Step 1 2 3 4 Action Note the DLT2000 factory settings. Review Section 2.4.1. Configure the DLT2000 for use on your system: If you need to … See section … Disable parity checking Change the SCSI ID Connect the cables. 2.4.2 2.4.3 2.
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Installing and Configuring the DLT2000 Tabletop Drive 2.4.2 Disable Parity Checking To disable parity, see your service representative. 2.4.3 Changing the SCSI ID To change the SCSI ID use the pushbutton switch on the rear of the drive. Press the switch button(s) above or below the number display (0-7) to set the desired SCSI ID. Press the top button to increase the number or press the bottom button to decrease the number. 0 0 MLO-012870 Figure 2-2 Changing the SCSI ID via the Pushbutton Switch 2.
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Installing and Configuring the DLT2000 Tabletop Drive 2.5.1 Examine the DLT2000 Rear Panel Examine the components on the DLT2000 rear panel to complete the physical installation (Figure 2-3). 0 I O Power Switch Power Connector SCSI Signal Connector (IN) SCSI Signal Connector (Out/Termination) MLO-012869 Figure 2-3 Rear Panel Components 2.5.2 Connect the SCSI Signal Cable To connect the SCSI signal cable: 1.
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Installing and Configuring the DLT2000 Tabletop Drive 2.5.3 Terminate the SCSI Bus _________________________ Note _____________________________ The SCSI bus must be terminated at both ends and at least one device must supply terminator power. ___________________________________________________________ Table 2-1 indicates when and where to add a terminator. Table 2-1 Adding a Terminator If the DLT2000 is … Then … The last or only device on the bus and you are going to terminate the cables externally 1.
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Installing and Configuring the DLT2000 Tabletop Drive 2.6 Test the Installation Section 2.6 includes the following topics: Topic Section Run the Power-On Self-Test (POST) What to Do after POST 2.6.1 2.6.2 2.6.1 Run POST To test the installation for the DLT2000 by running POST: 1. Turn on the system power. 2. Set the power switch on the DLT2000 rear panel to on. POST runs automatically. 3. Observe the indicators on the DLT2000 front panel.
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Installing and Configuring the DLT2000 Tabletop Drive 2.6.2 What to Do after POST Table 2-3 After POST If … Then … All the events in Table 2-2 took place POST succeeded. Bring up the system and run the optional system tests. See Chapter 3 for operating the drive and selecting density. All left- or right-side lights on the DLT2000 front panel blink only POST failed. See Table 2-4.
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Installing and Configuring the DLT2000 Tabletop Drive 2.7 DLT2000 Troubleshooting Chart If the DLT2000 fails during POST or operation, use Table 2-4 to determine the problem and the action to take. Table 2-4 DLT2000 Troubleshooting Chart If. . . Your system does not recognize the DLT2000 Then . . . Your system might not be configured to see the SCSI ID You should. . . Configure your system to see the ID. The SCSI ID might not be unique Change the SCSI ID and reconfigure the system.
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Installing and Configuring the DLT2000 Tabletop Drive Table 2-4 DLT2000 Troubleshooting Chart (cont’d) If. . . Your system does not recognize the DLT2000 Then . . . You should. . . 1. The SCSI bus might be too long. 2. Too many devices might be on the bus. 1. Limit the bus length to the ANSI SCSI standard of 6 meters (19 feet) for single ended (SE) or 25 meters (82 feet) for differential 2. Limit the number of devices on the bus (including the system) to eight Check your system configuration rules.
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Installing and Configuring the DLT2000 Tabletop Drive 2-12 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Chapter 3 Configuring and Operating the DLT2000 Basic Tape Drive 3.1 In This Chapter The configuration section in this chapter applies to the basic drive without the SCSI ID switchpack and power supply. (Chapter 2 applies to configuring the tabletop).
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Configuring and Operating the DLT2000 Basic Tape Drive 3.2.1 Disabling Parity Checking If your system does not generate parity, you can disable parity checking by adding a jumper to the SCSI connector on the left side of the DLT2000 drive (Figure 3-1). To disable parity: 1. Use Figure 3-1, Number , to locate the SCSI ID connector on the drive. Front Bezel 1 Left Side Front Bezel 2 3 Right Side ZKO−1217−17−RGS 1. 2. 3.
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Configuring and Operating the DLT2000 Basic Tape Drive Figure 3-2 shows what the pins on the SCSI ID connector represent. Remote ID Present Disable Parity ID Pins LKG-9295-94F Figure 3-2 SCSI ID Connector Pins _________________________ Note _____________________________ A jumper must always be placed on the Remote ID Present position (Figure 3-2) for the host to recognize any ID selection on this connector.
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Configuring and Operating the DLT2000 Basic Tape Drive 2. Place the jumper in the disable parity check position, as shown in Letter I, Figure 3-3. 8 - Bit A B C D E F G H I L KG-9 294 -94f Figure 3-3 Jumper Positions A. SCSI ID 0 B. SCSI ID 1 C. SCSI ID 2 D. SCSI ID 3 E. SCSI ID 4 F. SCSI ID 5 G. SCSI ID 6 H. SCSI ID 7 I. Disable parity checking. The jumper goes in this position with any SCSI ID you choose. 3.2.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.2.3 Setting the TRM ENB (Single-ended Only)/TRM PWR Jumpers _________________________ Note _____________________________ The Small Computer System Interface (SCSI) bus must be terminated at both ends of the bus, and at least one device must supply terminator power. ___________________________________________________________ The single-ended DLT2000 controller module has active terminators.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.2.4 Locating the SCSI Cable and Power Connectors To install the DLT2000 drive, note the location of the rear connectors (Figure 3-5).
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Configuring and Operating the DLT2000 Basic Tape Drive 3.3 Selecting Density Section 3.3 describes the drive's density select features. _________________________ Caution __________________________ If a prerecorded tape and write from beginning of tape (BOT), all prerecorded data is lost. This includes density changes, since they only occur when writing from BOT. ___________________________________________________________ Ways of Selecting Density Using CompacTape III the density defaults to 10.0 GB native.
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Configuring and Operating the DLT2000 Basic Tape Drive 4. You can use the drive's control panel at various times, not just after loading a tape. Density selection is inactive until the write from BOT command is issued. The controller remembers the density selection state until you do one of the following: • Change the density selection • Unload the tape Density Select Example If you have loaded a tape with a prerecorded 2.6 density and you use the Density Select button to select 10.
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Configuring and Operating the DLT2000 Basic Tape Drive Table 3-1 shows the results of density selection. Table 3-1 Results of Density Selection If … Then … The Density Select button is not used The lights show the actual density when the tape is reading and writing. The lights are on steady and Density Override is off. The Density Select button is used, and if the actual tape density is the same as the density you selected The actual density and the Density Override light.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.4 Overview of the Front Panel The DLT2000 has the following indicators and controls for operating the drive Figure 3-6): se U ed g e n ct in at dle ni te te e e a pe per an ri ro ap Us Cle Ta W P O H T 2. 6 6. 0 C om pr es t ad gh Lo Li o T t ai his t W n pe O dle pe a T an H rt se his t In se lo e C dl an H d oa n nl to U ut t o B gh T i ss L re P t ai his t W n pe pe O dle Ta an ve o em R .
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Configuring and Operating the DLT2000 Basic Tape Drive 3.5 Description of Controls and Indicators Section 3.5 includes the following sections: Topic Section Beeper Unload Button Cartridge Insert/Release Handle Indicator Action during Power-on Self-test and Operation 3.5.1 3.5.2 3.5.3 3.5.4 3.5.1 Beeper A beeper sounds when you can operate the cartridge insert/release handle. When you hear the beep, the green Operate Handle light should be on.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.5.4 Indicator Action during Power-On Self-Test and Operation When you turn on system power, the drive performs the power-on self-test (POST).
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Configuring and Operating the DLT2000 Basic Tape Drive Table 3-2 POST Sequence of Events Stage What Happens 1. The lights on the right front panel turn on sequentially from top to bottom. All lights stay on for a few seconds. 2. The lights on the left front panel turn on at the same time for about three seconds and then turn off. 3. The green Operate Handle, the orange Write Protected, and the yellow Use Cleaning Tape lights turn off.
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Configuring and Operating the DLT2000 Basic Tape Drive Table 3-2 POST Sequence of Events Cont’d Stage What Happens Drive State Indicator Displays and Actions e. The drive detects an error condition Then all right or left side lights blink repeatedly. You may try to unload the tape and reinitialize the drive by pressing the Unload button or turn drive power off and then on again. The right- or left-side lights stop blinking and the drive tries to reinitialize.
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Configuring and Operating the DLT2000 Basic Tape Drive Table 3-4 Determining the Drive's Operating Condition (cont’d) Label Color Light (Left Front Panel) State Operating Condition Operate Handle On Okay to operate the cartridge/insert release handle. Off Do not operate the cartridge insert/release handle. On POST is starting. Blinking An error has occurred. See Table 2-4, DLT2000 Troubleshooting Chart. Tape is recorded in 2.6 format. Tape is recorded in another density.
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Configuring and Operating the DLT2000 Basic Tape Drive Table 3-4 Determining the Drive's Operating Condition (cont’d) Label Color Light (Left Front Panel) All four right-side or all left-side lights State Operating Condition Blinking A POST error occurred.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.6 Description of the Tape Cartridge The CompacTape III tape cartridge is a 4-inch, gray/brown, plastic cartridge containing 1100 feet of 1/2 inch magnetic metal particle tape. 3.6.1 Cartridge Write-Protect Switch The tape cartridge has a write-protect switch to prevent accidental erasure of data. Before loading the tape cartridge into the drive, position the write-protect switch on the front of the cartridge (Figure 3-7).
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Configuring and Operating the DLT2000 Basic Tape Drive Figure 3-7 shows the write-protect switch on the tape cartridge : ORANGE INDICATOR WRITEPROTECT SWITCH WRITEENABLED WRITEPROTECTED ZKO-1217-04-DG Figure 3-7 Tape Cartridge 3-18 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Configuring and Operating the DLT2000 Basic Tape Drive 3.6.2 Data Protection When the cartridge write-protect switch is to the left, the drive turns on the write protect LED immediately. But, if the drive is writing to the tape, write protect does not take effect until the write completes. Table 3-5 describes what happens to data protection when you move the write-protect switch before loading the cartridge.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.7 Loading a Cartridge The following are more detailed steps for loading a cartridge (Figure 3-8): 1. When the green light is on steady, pull the cartridge insert/release handle open. 2. Insert the cartridge. 3. Push the cartridge into the drive. 4. Push the handle closed. The green light turns off and the yellow light blinks to show the tape is loading. When the tape is at the BOT marker, the yellow light turns on steady.
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Configuring and Operating the DLT2000 Basic Tape Drive Figure 3-8 shows how to load a cartridge into the drive. Ha Un nd lo le ad 1. 2. 3. 4.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.7.1 Tape in Use Whenever the yellow Tape in Use light is on steady, the tape is ready to use. When the tape is being read, written, or rewound, Tape in Use light blinks. Use Table 3-7 to determine what is happening during cartridge use. Table 3-7 What is Happening During Cartridge Use (Right Side Lights) If … It means … The yellow light is on steady A cartridge is loaded, but the tape is not moving.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.8 Using the Cleaning Tape Cartridge Use Table 3-8 to determine when to use the cleaning cartridge. Table 3-8 When to Use the Cleaning Cartridge If … It means … And you should … 1. Use Cleaning Tape lights (Figure 3-6) The drive head needs cleaning or the tape is bad (see item 3) Use the cleaning cartridge. Follow the instructions in Section 3.7 for loading a cartridge into the drive.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.9 Unloading a Cartridge _______________________CAUTIONS ___________________________ Remove a cartridge from the drive before turning off host system power. Failure to remove a cartridge can result in cartridge and drive damage. When you remove the cartridge from the drive, return the cartridge to its plastic case to prolong the cartridge life.
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Configuring and Operating the DLT2000 Basic Tape Drive Un lo ad 1. 2. 3. 4.
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Configuring and Operating the DLT2000 Basic Tape Drive 3.10 Preserving Cartridges For longer life of recorded or unrecorded cartridges, store cartridges in a clean environment with these conditions: • Do not drop or bang the cartridge. This can displace the tape leader, making the cartridge unusable and possibly damaging the drive. • Keep tape cartridges out of direct sunlight and away from heaters and other heat sources. • Store tape cartridges in temperatures between 10°C and 40°C (50°F to 104°F).
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Chapter 4 Configuring and Operating the DLT2500 Mini-Library 4.1 In This Chapter The configuration section in this chapter applies to the mini-library and its operation. Chapter 4 includes these main topics and sections: Topic Introduction to the Mini-Library Configure the DLT2500 Mini-Library Installation Test Operator Control Panel Key Lock Selecting Density Default Operating Modes Tape Cartridge Description Magazine Description When to Use the Cleaning Tape Cartridge Section 4.2 4.3 4.4 4.5 4.6 4.7 4.
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Configuring and Operating the DLT2500 Mini-Library MLO–012160 Shipping Screw Locking Lever Figure 4-1 Loosening the Shipping Screw Under the Mini-Library 4-2 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsytem
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Configuring and Operating the DLT2500 Mini-Library MLO–012863 Figure 4-2 Rotate the Locking Lever Lift the locking lever on the front of the mini-library (Figure 4-2) to rotate the magazine locking mechanism. This allows you to remove the magazine from the mini-library.
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Configuring and Operating the DLT2500 Mini-Library MLO-012002 Label Power Switch/Power Connector Fan SCSI Connectors Figure 4-3 Mini-Library Rear Panel Components 4-4 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsytem
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Configuring and Operating the DLT2500 Mini-Library MLO–012131 Magazine Door Display Operator Buttons Key Lock Figure 4-4 Front of the DLT2500 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsytem 4-5
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Configuring and Operating the DLT2500 Mini-Library 4.2 Introduction to the Mini-Library The mini-library includes a DLT2000 tape drive, a media loader, and a 5-cartridge removable magazine. The same SCSI target controller board controls the tape drive and the media loader. If the controller detects the loader's presence when the system is turned on, the loader is presented as a SCSI-2 medium changer device on LUN 1.
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Configuring and Operating the DLT2500 Mini-Library 4.3 Configure and Install the DLT2500 Mini-Library This section describes how to configure and install the mini-library including: •= Configuration guidelines •= Connecting the SCSI signal cable to the mini-library The mini-library is factory set to SCSI ID 5, unless otherwise specified. 4.3.1 Configuration Guidelines Your system uses the SCSI ID to identify, or address, the mini-library.
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Configuring and Operating the DLT2500 Mini-Library 4.4 Test the Installation This section tells you how to run the power-on self-test (POST) and what to do after POST. 4.4.1 Run POST To test the installation for the mini-library by running POST: 1. Turn on the system power. 2. Set the power switch on the mini-library rear panel to on. Result: POST runs automatically when you turn on the mini-library 3. Watch the display on the mini-library front panel.
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Configuring and Operating the DLT2500 Mini-Library 4.5 Operator Control Panel The operator control panel (OCP) has 4 pushbuttons (Figure 4-5 and Table 4-1).
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Configuring and Operating the DLT2500 Mini-Library Table 4-1 lists each button and its function. Table 4-1 Mini-Library Operator Control Panel Button Display Mode Function Puts the mini-library in Normal, Density Select, or SCSI ID Select mode. Select •= •= Selects SCSI ID and density. Moves in increments the current slot number on the display to the next slot number .
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Configuring and Operating the DLT2500 Mini-Library Table 4-2 lists the display messages you can see during operation. Table 4-2 Display Messages Display Message WP Tells you … The cartridge in the drive is write-protected by one of these methods: • The write-protect switch on the cartridge is set to the write-protect position • Host software write-protect qualifiers DRV ACT Tape is reading or writing DRV RDY A cartridge is in the drive and the tape is not moving. DRV REW Tape is rewinding.
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Configuring and Operating the DLT2500 Mini-Library Table 4-2 Display Messages (Cont’d) Display Message OVR Tells you … Tape drive activity as follows: • On steady means you selected a density from the front panel. • Off (default) means density is selected automatically. • Flashing means you are in density select mode. 2.6 Tape drive activity as follows: • On steady means the tape is recorded in 2.6 format. • Flashing means the tape is recorded in another density.
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Configuring and Operating the DLT2500 Mini-Library 4.6 Key Lock The key lock on the front of the mini-library (Figure 4-3) enables or disables use of the operator control panel (OCP) (Figure 2-5). The key lock prevents unauthorized removal of the magazine or cartridges, providing a measure of data security. To unlock or enable the OCP, turn the key toward the opened lock icon next to the key lock. To lock or disable the OCP, turn the key toward the locked icon next to the key lock.
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Configuring and Operating the DLT2500 Mini-Library 4. Issue a bus reset or turn the mini-library power off and then on again so the drive can recognize the new SCSI ID. 4.7 Selecting Density This section describes the mini-library's density select feature. __________________________Caution ___________________________ If a prerecorded tape and write from beginning of tape (BOT), all prerecorded data is lost. This includes density changes, since they only occur when writing from BOT.
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Configuring and Operating the DLT2500 Mini-Library 4.7.1 Front Panel Density Select Mode To select density via the front panel: 1. If a tape is loaded in the drive, the display shows the tape's pre-recorded density. 2. The user can use the mini-library OCP at various times, not just after you load a tape. Density selection is inactive until you issue the write from BOT command. The controller remembers the density selection state until you do one of the following: 3.
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Configuring and Operating the DLT2500 Mini-Library Table 4-3 shows results. Table 4-3 Results of not Using or Using Density Select Mode If … You did not use Density Select mode Then… … The display shows the actual density when the tape is reading and writing. You used Density Select mode and the actual tape density is the same as the density you selected The display shows the actual density on steady and OVR on steady.
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Configuring and Operating the DLT2500 Mini-Library 4.8 Default Operating Modes The mini-library operates in 4 modes: • Normal • Density Select • SCSI ID Select • Code Update 4.8.1 Normal Mode Normal mode is used by default after you turn on or reset the mini-library. The information displayed during this mode depends on the state of the mini-library.
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Configuring and Operating the DLT2500 Mini-Library 4.8.2 Density Select Mode Density Select mode allows you to select drive density.
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Configuring and Operating the DLT2500 Mini-Library 4.8.3 SCSI ID Select Mode SCSI ID Select mode allows you to select the SCSI ID for the tape drive and to enter Code Update mode. If you turn power off and then on again or reset the mini-library, the SCSI ID you chose reappears after being stored.
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Configuring and Operating the DLT2500 Mini-Library 4.9 Description of the Tape Cartridge The CompacTape III tape cartridge is a 4-inch, gray, plastic cartridge containing 1100 feet of 1/2 inch magnetic metal particle tape. 4.9.1 Cartridge Write-Protect Switch The tape cartridge has a Write-Protect switch to prevent accidental erasure of data. Before you load the tape cartridge into the drive, position the write-protect switch on the front of the cartridge (Figure 4-6).
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Configuring and Operating the DLT2500 Mini-Library 4.9.2 Data Protection If you move the cartridge write-protect switch to the left, and then load the tape, the WP (write-protect) message displays. Table 4-4 describes what happens to data protection when you move the write-protect switch before you load the cartridge.
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Configuring and Operating the DLT2500 Mini-Library 4.10 Description of the Magazine The front of the magazine has numbers 0 through 4 to indicate each slot number. __________________________NOTE ____________________________ Insert and remove all cartridges at the front of the magazine.
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Configuring and Operating the DLT2500 Mini-Library 4.10.1 Inserting a Cartridge into the Front of the Magazine Before cartridge insertion: 1. Grasp the cartridge with the write-protect switch on the right side facing you. 2. Set the cartridge's write-protect switch to the desired position.
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Configuring and Operating the DLT2500 Mini-Library 0 1 2 3 4 0 1 2 3 4 0 1 2 3 4 MLO-012140 Figure 4-8 Inserting a Cartridge into the Magazine To insert a cartridge into the magazine (Figure 4-8): Place the magazine on a flat surface with the slots facing you. Each slot is numbered to ensure you are inserting the cartridge correctly in the front of the magazine. Usually, cartridges are inserted into consecutive slots. Insert the cartridge by pushing it into the slot until you hear a click.
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Configuring and Operating the DLT2500 Mini-Library 0 1 2 3 4 0 1 2 3 4 0 1 2 3 4 MLO-012132 Figure 4-9 Removing a Cartridge from the Magazine 4.10.2 Removing a Cartridge from the Magazine To remove a cartridge from the magazine (Figure 4-9): At the front of the magazine, where you can see the metal tab next to the slot number, press in on the cartridge until it stops and you hear a click. Then, release. The slot has a spring-release action.
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Configuring and Operating the DLT2500 Mini-Library __________________________NOTE ____________________________ Never apply labels to the top or bottom of tape cartridges. Doing so can cause cartridge jams in the mini-library. Use the space on the front of the cartridge for labels. ____________________________________________________________ 4.10.
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Configuring and Operating the DLT2500 Mini-Library 4.10.5 Selecting a Cartridge from the Magazine After a successful initialization, the mini-library automatically selects the first slot containing a cartridge and the Select button becomes active. To select a cartridge: press the Select button to advance to the next slot containing a cartridge. 4.10.6 Loading the Cartridge into the Drive To load the cartridge from the magazine into the drive: press the Load/Unload button.
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Configuring and Operating the DLT2500 Mini-Library 4.10.7 Unloading the Cartridge __________________________CAUTION _________________________ Do not press the Load/Unload button until backup or other tape operations are stopped at the terminal. Doing so can result in operation failure and drive unavailability. ____________________________________________________________ If … You want to unload the cartridge from the drive Then … Press the Load/Unload button.
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Configuring and Operating the DLT2500 Mini-Library 4.11 When to Use the Cleaning Tape Cartridge Use Table 4-6 to determine when to use the cleaning cartridge. Table 4-6 When to Use the Cleaning Cartridge It means … The drive head needs cleaning or the tape is bad (item 3 in this table). And you should … Use the cleaning cartridge. Follow the instructions in this chapter to insert a cartridge into the magazine and load into the drive.
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Configuring and Operating the DLT2500 Mini-Library 4-30 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsytem
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Chapter 5 Configuring and Operating the DLT2700 Mini-Library 5.1 In This Chapter Chapter 5 includes these main topics and sections: Topic Section Introduction to the Media Loader Configure the DLT2700 Mode Select Key Selecting Density Operator Control Panel (OCP) Power-On Process Slot Select, Load/Unload, and Eject Button Functions Magazine 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.
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Configuring and Operating the DLT2700 Mini-Library Auto-loading is implemented as a side effect of the SCSI UNLOAD command. If … And … Then … An unload is specified A media loader is present After winding the tape back into the cartridge and moving the cartridge from the drive to the magazine slot from which it came, the cartridge in the next slot is moved from the magazine into the drive and made ready.
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Configuring and Operating the DLT2700 Mini-Library 5.3.1 Configuration Guidelines Your system uses the SCSI ID to identify, or address, the DLT2700. Follow these guidelines when configuring the DLT2700 for your system: If you install the DLT2700 as … Then … The only SCSI device or one of multiple SCSI devices on the bus Be sure to use a SCSI ID that is unique from any other device or system ID on the SCSI bus.
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Configuring and Operating the DLT2700 Mini-Library Figure 5-1 shows the location of the SCSI ID pushbutton switch.
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Configuring and Operating the DLT2700 Mini-Library 5.4 Mode Select Key The Mode Select key (Figure 5-2), on the front of the loader, locks the loader transfer assembly into the enclosure and locks the receiver closed. The key has four modes: Mode Use OCP Disabled Automatic Manual Service Operational Operational Operational Servicing procedures 5.4.1 OCP Disabled Mode When the magazine is inserted into the receiver and the receiver is closed, the loader transfer assembly scans the magazine.
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Configuring and Operating the DLT2700 Mini-Library Figure 5-2 shows the operator’s control panel.
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Configuring and Operating the DLT2700 Mini-Library 5.4.2 Automatic Mode This is the default or normal mode of the DLT2700 subsystem. This mode allows the DLT2700 to load and unload cartridges as needed during backup procedures. When the user engages the Automatic Mode a SCSI ‘unload’ command is issued, not only is the currently loaded cartridge unloaded from the drive and restored to its position in the magazine, the next higher-numbered cartridge is loaded into the drive.
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Configuring and Operating the DLT2700 Mini-Library __________________________Note _____________________________ During Manual mode, the cartridge returns to the magazine, but the current Slot Select indicator does not advance forward to the next available cartridge. ____________________________________________________________ 5.4.4 Service Mode Service mode allows for servicing procedures.
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Configuring and Operating the DLT2700 Mini-Library 5.5 Selecting Density Section 5.5 describes the loader's density select feature. _________________________ Caution __________________________ If a prerecorded tape and write from beginning of tape (BOT), all prerecorded data is lost. This includes density changes, since they only occur when writing from BOT.
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Configuring and Operating the DLT2700 Mini-Library Density Select Example using a CompacTape III Tape If you have loaded a CompacTape III tape with a prerecorded 2.6 GB density and you use the Density Select button to select 10.0 GB density, the following should happen: • The 2.6 light remains lit−density has not changed yet and the steady light indicates recorded tape density • The 10.
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Configuring and Operating the DLT2700 Mini-Library Table 5-1 shows the results of density selection using a CompacTape III tape. Table 5-1 Results of Density Selection using a CompacTape III tape If … Then … You did not select the Density Select button The lights show the actual density when the tape is reading or writing. The lights are on steady and the Density Override light is off.
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Configuring and Operating the DLT2700 Mini-Library 5.6 Operator Control Panel The DLT2700 operator control panel (OCP) has 4 OCP pushbuttons and 23 lights (Table 5-2) used with the Mode Select key. See Section 5.4 for information on the Mode Select key and its functions. See Section 5.8 for more details on button and indicator operations. Table 5-2 lists each button/indicator and its function.
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Configuring and Operating the DLT2700 Mini-Library Table 5-2 DLT2700 Operator Control Panel (Cont’d) Button/Indicator Color Function Write Protected light Orange When on, indicates the cartridge in the drive is write-protected by one of these methods: •= The write-protect switch is set to the writeprotect position •= Host software write-protect qualifiers •= When off, indicates that the cartridge in the drive is write-enabled.
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Configuring and Operating the DLT2700 Mini-Library Table 5-2 DLT2700 Operator Control Panel (Cont’d) Button/Indicator Color Function Density Override Yellow Indicates tape drive activity as follows: On steadyyou selected a density from the front panel. Off (default)density to be selected by the host (automatic). Blinkingyou are in density selection mode. 2.6 Yellow Indicates tape drive activity as follows: On steadytape is recorded in 2.6 GB format. Blinkingtape is recorded in another density.
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Configuring and Operating the DLT2700 Mini-Library 5.7 Power-On Process _________________________ Caution __________________________ Before applying power, verify the DLT2700 is set (see the label on the mini-library rear panel) for the available ac supply voltage. ___________________________________________________________ Table 5-3 explains what happens during each phase of the DLT2700 operation. Table 5-3 Loader Power-On Self-Test Phase 1. 2. 3. 4.
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Configuring and Operating the DLT2700 Mini-Library Table 5-3 Loader Power-On Self-Test (cont’d) Phase 6.
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Configuring and Operating the DLT2700 Mini-Library 5.8 Slot Select, Load/Unload, and Eject Button Functions The Slot Select, Load/Unload, Eject, and Density Select buttons are OCP pushbuttons. They contain a green light and they are operable only when their corresponding lights are on.
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Configuring and Operating the DLT2700 Mini-Library 5.8.3 Unloading the Cartridge __________________________Caution ___________________________ Do not press the Load/Unload button until backup or other tape operations are stopped at the terminal. Doing so can result in operation failure and drive unavailability. __________________________Note _____________________________ The Load/Unload light must be on before you press the Load/Unload button to load or unload a cartridge.
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Configuring and Operating the DLT2700 Mini-Library 5.8.4 Opening the Receiver The Eject button opens the receiver for insertion or removal of the magazine. The button is disabled when the Mode Select key is in the OCP Disabled position. The Eject button can also be used to unload a tape from the drive. When … Then … You should … A cartridge is not in the drive The Slot Select, Load/Unload, and Eject lights are on before any operation begins. Press the Eject button to turn off all lights.
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Configuring and Operating the DLT2700 Mini-Library 5.9 Magazine The front of the magazine has numbers, 0 through 6, that indicate the number of the slot. __________________________Note _____________________________ Insert and remove all cartridges at the front of the magazine. ____________________________________________________________ 5.9.1 Inserting a Cartridge into the Front of the Magazine To simplify cartridge insertion: place the magazine on a flat surface with the slots facing you (Figure 5-4).
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Configuring and Operating the DLT2700 Mini-Library ORANGE INDICATOR WRITEPROTECT SWITCH WRITEENABLED WRITEPROTECTED ZKO-1217-04-DG Figure 5-3 Write-Protect Switch on a Cartridge DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem 5-21
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Configuring and Operating the DLT2700 Mini-Library BACK OF MAGAZINE 0 1 2 3 4 5 5 6 1 2 3 0 0 1 1 2 2 3 3 4 4 5 5 6 6 NOTE: Push tape in until a click is heard FRONT OF MAGAZINE SLOT NUMBERS 0-6 ZKO-1217-05-DG Figure 5-4 Inserting a Cartridge into the Magazine 5-22 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Configuring and Operating the DLT2700 Mini-Library 5.9.2 Removing a Cartridge from the Magazine To remove a cartridge from the magazine: at the front of the magazine press in on the cartridge (Figure 5-5) until it stops and you hear a click. Then, release. The slot has a spring-release action. _________________________ Note _____________________________ Never apply labels to the top or bottom of tape cartridges. Doing so can cause cartridge jams in the DLT2700 subsystem.
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Configuring and Operating the DLT2700 Mini-Library BACK OF MAGAZINE 0 1 2 NOTE: Push tape in until a click is heard 3 4 5 6 1 2 3 0 0 1 2 1 3 2 4 4 3 5 5 4 6 5 6 SLOT NUMBERS 0-6 FRONT OF MAGAZINE ZKO-1217-06-DG Figure 5-5 Removing a Cartridge from the Front of the Magazine 5-24 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Configuring and Operating the DLT2700 Mini-Library Ejec Loa Slot Pow Wri t d/U nloa Sele er O n te P ro Tap Driv Den tect e In Use Use Cle anin Loa d ct g Ta pe e Fa u d Fa u sity lt lt Sele ct Den sit Ove y rrid e 2.6 6.0 10.0 15.
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Configuring and Operating the DLT2700 Mini-Library 5-26 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Chapter 6 Troubleshooting Guide for the DLT2500/DLT2700 Mini-Library 6.1 In This Chapter Chapter 6 includes the following main topics and sections: Topic Section Conditions Necessary for Button Operation Backup Operation Failure Avoiding Basic Problems Error Conditions : DLT2500 DLT2700 Power Problems 6.2 6.3 6.4 6.5 6.6 6.7 6.2 Conditions Necessary for Button Operation Be sure to review information in the previous chapters to ensure you are correctly operating the DLT2500/DLT2700 mini-library.
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Troubleshooting Guide for the DLT2500/DLT2700 Mini-Library __________________________Note _____________________________ Do not press the Load/Unload button to abort any function of the DLT2500/DLT2700 subsystem. Press [Ctrl/Y] or [Ctrl/C] instead. ____________________________________________________________ See Chapter 4 for more information on the functions of the DLT2500 OCP buttons.
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Troubleshooting Guide for the DLT2500/DLT2700 Mini-Library See Chapter 5 for more information on the functions of the DLT2700 OCP buttons.
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Troubleshooting Guide for the DLT2500/DLT2700 Mini-Library 6.4 Avoiding Basic Problems Follow these guidelines when you operate the DLT2500/DLT2700 subsystem to avoid basic problems: • Use CompacTape III cartridges. • Check the tape leader in the cartridge by lifting the cartridge latch that opens the door to expose the leader. Be sure the leader is in the same position as the one shown in Figure 6-1. __________________________Caution ___________________________ Do not touch the exposed magnetic tape.
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Troubleshooting Guide for the DLT2500/DLT2700 Mini-Library 6.5 DLT2500 Error Conditions Error indications fall into these main categories: • Magazine Error • Loader Error • Drive Error • Controller Error • Unknown Error 6.5.1 DLT2500 Magazine Error The ERR MAG message tells you the status of cartridges reported by the loader and drive is inconsistent. In some magazine errors, the mini-library retries the error three times before showing failure.
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Troubleshooting Guide for the DLT2500/DLT2700 Mini-Library 6.5.5 DLT2500 Unknown Error Description The ERR UNK message tells you the mini-library detected an error of unknown origin. In some unknown errors, the mini-library retries the error three times before showing failure. 6.5.5.1 DLT2500 Clearing a Loader, Drive, Controller, or Unknown Error When you press the Load/Unload button, the mini-library attempts to clear the error.
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Troubleshooting Guide for the DLT2500/DLT2700 Mini-Library 6.6.1.1 Detecting Cases 1, 2, and 3 The user can tell these cases have occurred when the Magazine Fault light and slot lights 0 and 5 are on. _________________________ Caution __________________________ Never remove a cartridge from the magazine by moving the metal tab in front of the cartridge. This is the main source of magazine faults. Use the proper procedure, Chapter 5.
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Troubleshooting Guide for the DLT2500/DLT2700 Mini-Library __________________________Note _____________________________ Slot 0 lights in all error conditions to indicate an error occurred. It is not a Slot Select indicator in this case. ____________________________________________________________ After you clear the error try loading and unloading cartridges to verify operation. 6.6.
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7 Firmware Update (From Tape) 7.1 In This Chapter Chapter 7 includes the following main topics and sections: Topic Section DLT2000 Firmware Update Overview Creating a "Firmware Update Tape" Firmware Update Procedure 7.2 7.3 7.4 7.2 DLT2000 Firmware Update Overview Through the use of the front panel the DLT2000 Cartridge Tape Subsystem family can automatically update the controller firmware directly from a tape containing the appropriate information.
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Firmware Update (From Tape) 7.2.1 Before Doing the Procedure Before doing the procedure, remember: __________________________Caution ___________________________ During the firmware update, when the new image is actually being programmed into the FLASH EEPROMs, a power fail (but not BUS RESET) causes the controller module to be unusable. When doing a firmware update, take reasonable precautions to prevent a power fail. ____________________________________________________________ 7.2.1.
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Firmware Update (From Tape) Front Bezel 1 Left Side Front Bezel 2 3 Right Side ZKO−1217−17−RGS Figure 7-1 DLT2000 Subsystem Connectors TRM PWR/TRM ENB Connector SCSI ID Connector Loader Connector DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem 7-3
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Firmware Update (From Tape) 2. Ensure the TRM PWR/TRM ENB jumpers are in position (Figure 7-2, number ). 1 3 2 4 ZKO−1217−18−RGS Figure 7-2 Jumper Settings for TRM PWR/TRM ENB Connector No Term Power/Disable Active Termination No Term Power/Enable Active Termination Term Power/Disable Active Termination Term Power/Enable Active Termination From the time the tape is inserted and the drive handle is closed, updating the firmware takes from 2 to 3 minutes. 7.
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Firmware Update (From Tape) 7.4 Firmware Update Procedure Section 7.4 describes the procedure for updating the firmware (code) of the DLT2000 subsystem controller. The update is done from a cartridge that stores the firmware image. Firmware update from the host is also supported. See the section on the SCSI WRITE BUFFER command in Chapter 8 for details. Firmware updates are supported on the DLT2000 with and without the media loader. The steps for performing the update are similar for each.
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Firmware Update (From Tape) If the Write Protect indicator does not blink, check that: 1. POST passed 2. The drive is unloaded 3. The drive handle is in the down position c. Then, release the Unload button and press the button again within 4 seconds. The second press should take less than 1 second. d. The Tape in Use and the Write Protect indicators blink, showing the tape subsystem recognizes the firmware update mode has been selected. e.
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Firmware Update (From Tape) 4. While the drive code goes through the update, the Write Protect and Tape in Use indicators flash alternately. 5. When the drive code update is complete, the drive resets, and goes through Power-On Self-Test (POST). The process waits until the tape is reloaded at beginning of tape (BOT). 6. If the firmware image is valid, the controller's flash EEPROM memory is automatically updated with the new firmware image.
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Firmware Update (From Tape) 7.4.1.1 Interpreting the Results (DLT2000 Code Update) Two possible results can occur: • The firmware update cartridge is unloaded: this means a successful update. On the DLT2000, the media is placed into the cartridge, the door is unlocked, and the green Operate Handle indicator is turned on. • The firmware update cartridge is NOT unloaded: this means the update was unsuccessful. The subsystem should still be usable, but this depends on why the update failed.
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Firmware Update (From Tape) Table 7-1 gives additional details. Table 7-1 Results (DLT2000 Code Update) Then... 1. The flash EEPROM containing the current firmware is erased. 2. The new image is programmed in. The subsystem completes the update in about 2 minutes. Then: •=The tape drive resets itself. If... The image is valid •=POST takes place. •=The drive automatically unloads the tape cartridge containing the firmware image, so you can remove the cartridge. This shows a successful firmware update. 1.
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Firmware Update (From Tape) 7.4.2 Updating the Firmware on the DLT2500 (Drive and Loader Configuration) 1. Get or make a CompacTape with the code image of the specified revision level copied to it. 2. Put the mini-library into code update mode. To do this: 3. a. With the LDR RDY message displaying, press the OCP Open button to open the door and remove the magazine. Then, close the door. b. Remove all cartridges from the magazine and install the code update cartridge into the magazine. c.
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Firmware Update (From Tape) 4. During a DLT2500 code update, the drive: a. Automatically reads the tape. _________________________ NOTE ____________________________ Calibration and directory processing cause the tape to move for a few minutes before data is actually read. ___________________________________________________________ 5. b. Examines the data. c. Verifies the data is a valid DLT2500 code image.
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Firmware Update (From Tape) Table 7-2 Results (DLT2500 Code Update) Cont'd If … • This means … The code update cartridge contains a corrupted image file or the file is built improperly. 1. 2. 3. 4. 5. 6. And you should … Press the Unload button to unload the tape cartridge from the drive. Press the Open button to open the magazine door. Remove the magazine and close the door. The mini-library does an elevator scan. Open the door again. The message LDR RDY displays.
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Firmware Update (From Tape) Table 7-2 Results (DLT2500 Code Update) Cont'd If … • This means … The tape cartridge with the valid update image is not readable. And you should … 1. 2. 3. 4. 5. 6. Press the Unload button to unload the tape cartridge from the drive. Press the Open button to open the magazine door. Remove the magazine and close the door. The minilibrary does an elevator scan. Open the door again. The message LDR RDY displays. Rebuild the valid image on a good cartridge.
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Firmware Update (From Tape) Table 7-2 Results (DLT2500 Code Update) Cont'd If … • This means … A controller failure occurs. The drive is most likely unusable and needs to be replaced. And you should … Turn off mini-library power and then on again. If you still have a drive controller failure, see your service representative. 7.4.3 Updating the Firmware on the DLT2700 (Drive and Loader Configuration) 1. Get or make a CompacTape with the firmware image of the desired revision level copied to it. 2.
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Firmware Update (From Tape) e. The Tape in Use and the Write Protect indicators blink, showing the subsystem recognizes the firmware update mode has been selected. f. If selecting firmware update mode is not successful (for example, because of not pushing the Unload button properly the second time), the Write Protect indicator should stop blinking within several seconds. Try the procedure again. 3.
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Firmware Update (From Tape) g. When the drive code update is complete, the drive resets, and goes through Power-On Self-Test (POST). The process waits until the tape is reloaded at beginning of tape (BOT). h. If the firmware image is valid, the controller's flash EEPROM memory is automatically updated with the new firmware image. i. Whether the firmware update is successful, the subsystem resets itself. A full, extended scan of the loader takes place.
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Firmware Update (From Tape) Table 7-3 gives additional details. Table 7-3 Results (DLT2700 Code Update) If … Then … The image is valid 1. The Flash EEPROM containing the current firmware is erased. 2. The new image is programmed in. The subsystem completes the update in about 2 minutes. Then: •=The tape drive resets itself. •=POST takes place. •=The drive automatically unloads the tape cartridge containing the firmware image so you can remove the cartridge. This shows a successful firmware update.
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Firmware Update (From Tape) 7-18 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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8 DLT2000 SCSI Interface 8.1 Overview This chapter details the SCSI Protocol features the DLT2000 implements. The following sections do not fully reiterate the ANSI SCSI specification, but describes the supported commands, messages, and options supported, and the error recovery procedures. 8.2 General SCSI Bus Operation 8.2.1 Data Transfer The DLT2000 supports asynchronous and synchronous data transfers. The product has differential and single ended versions.
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DLT2000 SCSI Interface 8.2.2 Initiator/Target Operation The DLT2000 does not act as an initiator on the SCSI bus. Therefore, the device will not do any of the following: • Generate unsolicited interrupts to the host • Initiate its own SCSI commands • Assert bus reset 8.2.3 SCSI IDs and Logical Unit Numbers (LUNs) The DLT2000 with optional medium changer has two logical units. The tape drive will always appear as LUN 0.
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DLT2000 SCSI Interface 8.2.4 Unit Attention Condition Queued Unit Attentions are implemented on this device, and are maintained separately for each valid LUN for each Initiator. Unit Attentions will be created in the following circumstances: • Power on • BUS Reset • Bus Device Reset message • When the media may have changed asynchronously • Another initiator changed the Mode Parameters • A firmware (microcode) update has completed Two queued Unit Attentions are not unusual.
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DLT2000 SCSI Interface 8.2.6 Data Cache and Tape Write Interaction The DLT2000 contains a data cache that buffers blocks (records) until they are written. This section defines specific times that blocks shall be written to tape. A Mode Select parameter allows the data cache to be disabled (unbuffered mode). In this mode, every WRITE command will cause the data to be written to the media before the STATUS byte and the COMMAND COMPLETE message is returned to the host.
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DLT2000 SCSI Interface 8.2.9 ATTENTION Signal Response The DLT2000 will respond to an ATN condition at least at every phase transition, as long as the initiator sets the ATN bit before the target deasserts the REQ for the last byte of the previous phase. Generally ATN will be recognized immediately by the DLT2000, and it will change the bus phase to Message Out. 8.2.10 STATUS phase The DLT2000 will enter the status phase just once per command, unless a retry is requested by the initiator.
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DLT2000 SCSI Interface ___________________Note _____________________________ In contrast to the BUSY status condition, the DRIVE NOT READY Sense Key is returned as part of the Sense data following a REQUEST SENSE command and indicates that a media access command has been issued and the media is not ready to be accessed (for example, the media is not installed, the media has been unloaded, the drive is currently initializing the media to prepare it for access, and so forth.
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DLT2000 SCSI Interface 8.2.11 BUS FREE There are several situations when the device might or will go to BUS FREE unexpectedly, as defined in the SCSI-2 standard (see sections 6.1.1 and 6.3): • An internal hardware or firmware fault that makes it unsafe for the device to continue operation without a full reset (similar to a power-up reset). • ATN asserted or bus parity error detected during non-tape data transfers. 8.2.12 BUS PARITY ERRORS The occurrence of bus parity errors (i.e.
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DLT2000 SCSI Interface 8.3 SCSI Message System The message system allows communication between an initiator and a target for the purpose of physical path management. To support certain SCSI-1 initiators, an Identify message is not required by the DLT2000. If a message is sent by the initiator after the SELECTION phase, it should be an IDENTIFY, ABORT, or BUS DEVICE RESET message. If the DLT2000 receives any other message in this case, it will go directly to BUS FREE phase.
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DLT2000 SCSI Interface ABORT (06h) This message is sent from the initiator to the target to clear, on the selected unit, the current I/O process. Buffered (cached) write operations will be completed if possible. The target goes directly to the BUS FREE phase after successful receipt of this message. Current settings of Mode Select parameters and reservations are not affected. Commands, data, and status for other initiators is not affected.
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DLT2000 SCSI Interface When received from an initiator, the tape drive enters the message in phase and return MESSAGE REJECT. EXTENDED MESSAGE (01h) This is sent as the first byte of a multiple-byte message (> 2 bytes) by either initiator or target.
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DLT2000 SCSI Interface IDENTIFY (80h-FFh) These messages are sent either by the initiator or by the target to establish (or reestablish) the physical connection path between an initiator and target for a particular logical unit. The message byte consists of the following bits: Bit 7: Always set to one. Bit 6: Set by initiator if target is allowed to disconnect/reconnect. Bit 5: Must be set to zero ("Target Routines" not supported). Bit 4: Reserved. Must be set to zero. Bit 3: Reserved. Must be set to zero.
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DLT2000 SCSI Interface The target's response to this message shall be to switch to the MESSAGE IN phase and re-send from the beginning all the bytes of the message which generated the original MESSAGE PARITY ERROR message. MESSAGE REJECT (07h) This message is sent from the initiator or target to indicate that the last message received was inappropriate or has not been implemented.
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DLT2000 SCSI Interface Synchronous Data Transfer Request (SDTR) This extended message allows the target and initiator to agree on the values of the parameters relevant to synchronous transfers. DLT2000 will not initiate the Synchronous Data Transfer Request message, but relies on the Initiator to do so. The SDTR message has the following format: Byte Byte Byte Byte Byte 0 1 2 3 4 Extended Message Identifier − 01h Length = 3 Message Code = 1 (SDTR msg) Transfer Period (min=50.
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DLT2000 SCSI Interface 8.4 Tape Drive SCSI Commands 8.4.1 Control Byte - Flag and Link Bits The control byte of the Command Descriptor Block contains the Flag and Link bits. Use of these bits is entirely initiator dependent. Setting the Link bit provides an automatic link to the next command, bypassing the usual ARBITRATION, SELECTION, and MESSAGE OUT phases which would normally occur between commands. All other bits in the Control Byte are considered to be reserved.
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DLT2000 SCSI Interface 8.4.2 Summary of Supported Sequential-Access Device Commands The following table shows what SCSI commands are supported by the DLT2000 tape drive.
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DLT2000 SCSI Interface 8.4.3 ERASE (19h) Bit 7 6 0 1 Byte 5 4 3 1 0 Immed Long Flag Link Operation Code (19h) Logical Unit Number Reserved 2 Reserved 3 Reserved 4 Reserved 5 2 Unused Reserved Figure 8-3 ERASE CDB ERASE causes data on the tape to be erased. Any write data currently held in buffer memory and not written to tape yet is flushed to tape before the ERASE is executed.
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DLT2000 SCSI Interface 8.4.4 INQUIRY (12h) Bit 7 6 0 1 5 4 Logical Unit Number 1 0 Reserved EVPD Page Code 3 Reserved 4 5 2 Operation Code (12h) 2 Byte 3 Allocation Length Unused Reserved Flag Link Figure 8-4 INQUIRY CDB INQUIRY tells the drive to send information regarding the device's parameters to the initiator. The INQUIRY command executes normally even if the specified LUN is not attached.
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DLT2000 SCSI Interface when Allocation Length bytes have been transferred, or when all available Inquiry data has been transferred to the initiator, whichever is less. 8.4.4.
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DLT2000 SCSI Interface Other Inquiry Data Fields The rest of the fields in the Inquiry Response are used as follows: • Byte 1 RMB - The Removable Medium bit is one. • Device-Type Modifier - Set to 0.
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DLT2000 SCSI Interface • Product Revision Level - This field contains four bytes of ASCII data, which define the product's software Revision Levels. The first tow bytes are the version number of servo code. in the DLT2000 products, this firmware is located in a PROM and is not field updateable. The second two bytes are the version number of the SCSI/read/write code. When a firmware update is performed on the DLT2000 , this part of the Revision Level field will change appropriately.
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DLT2000 SCSI Interface 8.4.4.2 Vendor Unique Inquiry Data The following information can be used to precisely identify the revision of subsystem components.
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DLT2000 SCSI Interface Sub-Personality Further differentiates product versions, currently set to a 1. Loader Present Nonzero if a media loader is present. Library Present Nonzero if a library is attached. Module Revision A four byte ASCII string represents the revision of the ECM module. 8.4.4.3 Vital Product Data Pages The following figures show the information in the supported Vital Product Data Pages.
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DLT2000 SCSI Interface 7 0 Byte 6 Bit 4 5 Peripheral Qualifier 3 2 1 0 Peripheral Device Type 1 Page Code (80h) 2 Reserved 3 Page Length (0Ah) 4 - 13 Serial Number Figure 8-8 Unit Serial Number page Serial Number The serial number is the serial number of the printed circuit card mounted on the bottom of the DLT2000. It can be found on the bar code label. The serial number is returned in ASCII.
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DLT2000 SCSI Interface 8.4.4.4 Media Loader Inquiry Response The DLT2000 controller generates INQUIRY Data on the Medium Changer LUN that is very similar to that of the tape drive LUN. The key differences are: • Peripheral Device Type is set to "8" for SCSI-2 Medium Changer • Product ID bytes are set to DLT2500 or DLT2700 for 5 or 7 cartridge loader, respectively.
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DLT2000 SCSI Interface 8.4.5 LOAD-UNLOAD (1Bh) Bit 7 6 5 0 1 Byte 4 2 1 0 Operation Code(1Bh) Logical Unit Number Reserved 2 Reserved 3 Reserved 4 5 3 Reserved Unused EOT Reserved Immed Re−Ten Load Flag Link Figure 8-10 LOAD-UNLOAD CDB LOAD-UNLOAD tells the target to load or unload the media in the tape cartridge. If no cartridge is in the drive, both LOAD and UNLOAD will return a CHECK CONDITION status with a NOT READY sense key set.
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DLT2000 SCSI Interface EEROM parameters ENALDRAUTOLD and DISLDRAUTOLDMC can be modified to enable/disable the sequential loading feature (Table 8-3). A media loader does not affect the device's processing of the LOAD flavor of the LOAD-UNLOAD command. The command specific bits are used as follows: • Immed - If this bit is set, status is returned as soon as the operation is started. Otherwise, the status is returned after the operation has completed.
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DLT2000 SCSI Interface 8.4.6 LOCATE (2Bh) Bit 7 0 1 Byte 5 4 3 2 1 0 BT CP Imm Operation Code (2Bh) Logical Unit Number 2 3 6 Reserved Reserved (MSB) 4 Block Address 5 6 (LSB) 7 Reserved 8 Partition 9 Unused Reserved Flag Link Figure 8-11 LOCATE CDB The LOCATE command is used to do high-speed positioning to the specified block address. Average positioning time is about 45 seconds; maximum time is under 90 seconds.
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DLT2000 SCSI Interface 8.4.7 LOG SELECT (4Ch) Bit 7 6 0 5 4 Byte Reserved PC 1 0 PCR SP Reserved 3 Reserved 4 Reserved 5 Reserved 6 Reserved 7 2 Operation Code (4Ch) 1 Logical Unit Number (0) 2 3 (MSB) Parameter List Length 8 9 (LSB) Unused Reserved Flag Link Figure 8-12 LOG SELECT CDB LOG SELECT allows the host to manage statistical information maintained by the device about its own hardware or the installed media.
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DLT2000 SCSI Interface PC Type of Parameter Values 00b 01b 10b 11b Threshold Values Cumulative Values Default Threshold Values Default Cumulative Values Figure 8-13 LOG Page Control Definitions All types of parameter values are changeable through Log Select. When the PC field is set to 00b or 01b and the Parameter List Length is zero, the command is terminated with a CHECK CONDITION Status, with Sense Key of ILLEGAL REQUEST, and ASC of INVALID FIELD IN CDB.
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DLT2000 SCSI Interface 8.4.7.1 Operation of LOG SELECT The purpose of the LOG SELECT command is to allow the initiator to modify and initialize parameters within the logs supported by the device. There are two ways to initialize the log parameters. First, set the PCR bit in the LOG SELECT CDB; this clears all parameters. Secondly, individual pages can be cleared by specifying the log page and the parameter value as the log parameters. The following pages can be cleared in this manner.
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DLT2000 SCSI Interface LOG SELECT PAGE FORMAT Each Log page will begin with a 4-byte header followed by N log parameter blocks (one block for each parameter code). Each block, except for parameter code 05h, will be 8 bytes. The parameter block for code 05h will be 12 bytes.
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DLT2000 SCSI Interface Parameter Code Description 00h 01h 02h 03h 04h 05h 06h 8000h Errors corrected with substantial delays Errors corrected with possible delays Total rewrites or rereads Total errors corrected Total times correction algorithm processed Total bytes processed Total uncorrected errors Vendor Unique Figure 8-16 Parameter Codes Supported Parameter codes 00h, 01h, and 04h will always return a value of zero.
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DLT2000 SCSI Interface • LP–List Parameter: This bit should always be set to 0 to indicate parameter codes are treated as data counters.
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DLT2000 SCSI Interface 8.4.8 LOG SENSE (4Dh) Bit 7 6 0 5 4 Byte Reserved PC 1 0 PPC SP(0) Page Code 3 Reserved 4 Reserved 5 2 Operation Code (4Dh) 1 Logical Unit Number (0) 2 3 (MSB) Parameter Pointer 6 7 (LSB) (MSB) Allocation Length (LSB) 8 9 Unused Reserved Flag Link Figure 8-17 LOG SENSED CDB LOG SENSE allows the host to retrieve statistical information maintained by the device about its own hardware or the installed media. It is a complementary command to LOG SELECT.
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DLT2000 SCSI Interface status. The sense key is set to ILLEGAL REQUEST and the additional sense code is set to INVALID FIELD IN CDB. If the target does not support a parameter code within this page then it will not return any data associated with this parameter. SP Saving log parameters is not supported and shall be always zero. If the SP bit is set, the command is terminated with CHECK CONDITION status with the sense key set to ILLEGAL REQUEST, and an additional sense code of INVALID FIELD IN CDB.
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DLT2000 SCSI Interface Page Code 00h 02h 03h 07h 32h Page Description List of Supported Pages Page Write Error Counter Page Read Error Counter Page Last n Errors Events Page Compression ratio page Figure 8-19 LOG SENSE Pages Supported Parameter Pointer The Parameter Pointer field allows the host to specify at which parameter within a log page the requested data should begin.
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DLT2000 SCSI Interface 8.4.8.1 Supported Pages Log Page (Page 0) When page 0 is requested, the 4-byte page header is returned followed by the pages supported in ascending order, one byte for each.
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DLT2000 SCSI Interface 8.4.8.2 Read/Write Error Log Page (Page 2 and 3) Each Log page will begin with a 4-byte header followed by n number of log parameter blocks, each block of 8 bytes except for parameter code 5h. The log parameter block for the Parameter total bytes processed (5h) will be 12 bytes, since the parameter value is 8 bytes long.
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DLT2000 SCSI Interface Parameter Code The following parameter codes are supported for the read/write error counter pages.
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DLT2000 SCSI Interface generated for all initiators. The sense key will be set to UNIT ATTENTION, ASC will be set to LOG EXCEPTION and ASCQ will be set to THRESHOLD CONDITION MET. If the RLEC bit in control mode page is zero then, UNIT ATTENTION will not be generated. __________________________Note _____________________________ This comparison is performed in real time. Therefore, you do not need to issue a Log Sense command to get the check condition.
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DLT2000 SCSI Interface 8.4.8.3 Last n Error Events Page (07h) This page returns one parameter at a time that consists of the ASCII text for the specified event log. The Parameter Number field in the CDB specifies the log event to return. The log events EEROM are numbered 0 to 255, after which the number wraps back to 0, and only a limited number of events are stored at a given time (up to 14).
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DLT2000 SCSI Interface 8.4.8.4 Read/Write Compression Ratio Page Format (32h) The Read/Write Compression Ratio page begins with a 4-byte header followed by the log parameter blocks of 6 or 8 bytes, depending on the parameter code selected. Parameter Codes The following parameter codes are supported for the Read/Write Compression Ratio page.
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DLT2000 SCSI Interface Parameter Block for Parameter Codes 00 and 01 7 0 6 Bit 4 5 (MSB) 3 2 1 Parameter Code (LSB) 1 Byte 2 DU 3 4 0 DS TSD ETC TMC Rsvd LP 02h (MSB) Compression Ratio x 100 (LSB) 6 Figure 8-27 Read/Write Compression Ratio LOG SENSE Page Format Parameter Control Byte • DU–Disable Update: This bit is always zero. • DS–Disable Save: Saving parameters is not supported; this bit will always be set to 1.
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DLT2000 SCSI Interface Parameter Block for Parameter Codes 02 through 09 7 0 6 5 (MSB) Bit 4 3 2 1 Parameter Code (LSB) 1 2 DU DS TSD ETC 3 Byte 4 5 0 TMC Rsvd LP 04h (MSB) Counter Value 6 7 (LSB) Figure 8-28 Read/Write Bytes Transferred LOG SENSE Page Format Parameter Control Byte • DU–Disable Update: This bit is always zero. • DS–Disable Save: Saving parameters is not supported; this bit will always be set to 1.
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DLT2000 SCSI Interface Parameter codes 04 and 05 report the counts of bytes transferred from the tape to the buffer. Parameter code 04 reports the number of full megabytes transferred. Parameter code 05 reports the number of bytes less than a full megabyte that has been transferred. Multiplying the counter returned for parameter 04 by 1,048,576 and then adding the counter value returned for parameter 05 will give the actual total bytes transferred from tape to buffer.
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DLT2000 SCSI Interface 8.4.9 MODE SELECT (15h) Bit 7 6 0 1 Byte 5 4 3 2 0 Operation Code (15h) Logical Unit Number PF Reserved 2 Reserved 3 Reserved 4 Parameter List Length 5 1 Unused (00) Reserved SP(0) Flag Link Figure 8-29 MODE SELECT CDB MODE SELECT enables the host to configure the device. Implementing MODE SELECT and MODE SENSE requires a certain amount of handshaking between the host and the drive.
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DLT2000 SCSI Interface 8.4.9.1 MODE SELECT Parameter List The MODE SELECT parameter list shown below, contains a 4-byte header, followed by one 8-byte block descriptor.
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DLT2000 SCSI Interface Buffered Mode The drive will implement Immediate Reporting on WRITE commands through Buffered mode. If the field is zero, then the drive does not report a GOOD status on WRITE commands until the data blocks are actually written to tape. If the Buffered Mode field is one, then the drive reports GOOD status on WRITE commands as soon as the data block has been transferred to the buffer. This is the default configuration for the drive.
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DLT2000 SCSI Interface •= 80h - 62500 bpi, 64 track pairs, serial cart tape - 10 GB (CompacTape III) (Without compression) •= 81h - 62500 bpi, 64 track pairs, serial cart tape -20 GB (CompacTape III) (With compression) _________________________ Note _____________________________ 1. If EEROM parameter EnaThirdPtyDens is set, which is true by default, Mode Select command does not reject non-supported density code. The third party density code Selected is translated into default density code (i.e. 00h) 2.
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DLT2000 SCSI Interface 8.4.9.2 MODE SELECT Pages Following the Block Descriptor are the MODE SELECT pages, which set the device parameters. Each page has a 2-byte header which identifies the page code and indicates the number of bytes in that page.
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DLT2000 SCSI Interface 8.4.9.3 Control Mode Page (0Ah) The control mode page provides controls over several features such as tagged queuing, extended contingent allegiance, asynchronous event notification, and error logging.
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DLT2000 SCSI Interface The RLEC bit indicates whether the DLT2000 should return Check Condition status with the sense key set to Unit Attention (6h) when one of its write and read error counters of the log pages reaches a specified threshold as follows: (See LOG SELECT command section on how to change the threshold.) 0 - Do not return Unit Attention when a threshold condition is met 1 - Return Unit Attention when a threshold condition is met Queue Algorithm Modifier This field must be 0.
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DLT2000 SCSI Interface 8.4.9.4 Data Compression Page (0Fh) The Data Compression Page specifies parameters for the control of data compression. This page allows you to turn DLT2000 compressed format on and off independently of the tape's position and allows you to enable or disable decompression of DLT2000 compressed data during write operations.
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DLT2000 SCSI Interface DDE (Data Decompression Enable) When the DLT2000 reads compressed data from tape, it automatically decompresses the data before sending it to the initiator. Data compression is always enabled, so this bit must be set to 1 (enable data decompression). RED (Report Exception on Decompression) The DLT2000 does not report exceptions on decompression (boundaries between compressed and uncompressed data). The RED field must be (00h).
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DLT2000 SCSI Interface 8.4.9.
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DLT2000 SCSI Interface Active Partition Only partition 0 is supported. Setting this field to any other value will be rejected by the drive with a CHECK CONDITION status and the ILLEGAL REQUEST sense key set. Write Buffer Full Ratio and Read Buffer Empty Ratio These indicate how full/empty the buffer memory should be before restarting the writing/reading of the media.
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DLT2000 SCSI Interface SEW and Buffer Size At Early Warning The Synchronize at Early Warning bit is set to 1. Buffer Size at EW is not supported and must be zero. Select Data Compression Algorithm One enables data compression; a zero disables it. The front panel setting will override what is specified in the MODE SELECT, but no error will result. If the front panel is returned to automatic mode, the value from the last MODE SELECT command will determine whether compression will be used or not.
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DLT2000 SCSI Interface 8.4.9.
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DLT2000 SCSI Interface Data Transfer Disconnect Control (DTDC) The DTDC field defines further restrictions on when a disconnect is permitted. DTDC Description 00b Data transfer disconnect control is not used. Disconnect is controlled by the other fields in this page 01b A target does not attempt to disconnect once the data transfer of a command has started until all data the command is to transfer has been transferred.
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DLT2000 SCSI Interface 8.4.9.
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DLT2000 SCSI Interface 8.4.9.
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DLT2000 SCSI Interface Read Retry Count This field reports the maximum number of rereads that are done before declaring an unrecoverable error. Write Retry Count This field reports the maximum number of overwrite retries that will be performed before declaring an unrecoverable error.
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DLT2000 SCSI Interface 8.4.9.9 EEROM Vendor Unique Page (3Eh) The drive shall support a vendor unique page, which you can use to modify savable parameters. Only one savable parameter may be changed per Mode Select command.
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DLT2000 SCSI Interface Table 8-3 EEROM Vendor Unique Page Parameters Length Usage Skip Default1 (Bytes) Name Value Rep.
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DLT2000 SCSI Interface Table 8-3 EEROM Vendor Unique Page Parameters (cont’d) Name Value Rep.
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DLT2000 SCSI Interface Table 8-3 EEROM Vendor Unique Page Parameters (cont’d) Length Usage Default Skip Default1 (Bytes) Name Value Rep. REPORTRCVDPERRS ASCII Binary 1 0 1 ENATHIRDPTYDENS ASCII Binary 1 0 1 FORCEREADSILI ASCII Binary 0 0 1 CACHETMS ASCII Decimal 0 0 1 LDRCYCLERESET ASCII Binary 0 0 1 ENAREPDECOMP ASCII Binary 0 0 1 8-66 DLT2000/DLT2700 Cartridge Tape Subsystem To report recovered error if parity error has been retried successfully, if set.
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DLT2000 SCSI Interface This is an example of an EEROM vendor unique page that will modify the VENDORID parameter to "XXXYY.
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DLT2000 SCSI Interface This is an example of an EEROM vendor unique page that will modify the FORCEDENSITY parameter to 1.
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DLT2000 SCSI Interface 8.4.9.10 MODE SELECT Changeable Parameters The following table lists the changeable mode parameters and their minimum and maximum values allowed. See the previous definitions for the units that are used. Parameter rounding is supported for all parameters except the block descriptor length. Table 8-4 Changeable Mode Parameters Page: Parameter Default Minimum Maximum Header: Buffered Mode, Device Specific Byte Block Descriptor Length Block Descriptor: Block Length 2.6 GB and 6.
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DLT2000 SCSI Interface 8.4.10 MODE SENSE (1Ah /5Ah) MODE SENSE allows the drive to report its media, current or changeable configuration parameters to the host. It is a complementary command to MODE SELECT. Bit 7 6 0 1 Byte 2 5 4 3 1 0 Operation Code (1Ah) Logical Unit Number Reser.
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DLT2000 SCSI Interface Bit 7 6 0 1 2 Byte 5 4 3 1 0 Operation Code (5Ah) Logical Unit Number PC Rsvd DBD reserved Page Code 3 Reserved 4 Reserved 5 Reserved 6 Reserved 7 2 (MSB) Allocation Length (LSB) 8 9 Unused Reserved Flag Link Figure 8-43 MODE SENSE CDB (10) DBD If the Disable Block Descriptors bit is zero, the device returns the Block Descriptor Data. If set, then the Block Descriptor information is not returned.
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DLT2000 SCSI Interface Allocation Length The Allocation Length field specifies the number of bytes that the host has allocated for returned MODE SENSE data. An Allocation Length of zero means that the drive will return no MODE SENSE data. This is not considered an error and GOOD status is returned.
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DLT2000 SCSI Interface 8.4.10.1 MODE SENSE Parameter List The MODE SENSE (6) data contains a 4-byte header followed by one 8-byte block descriptor, followed by zero or more variable length pages, depending on the Page Code and the Allocation Length.
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DLT2000 SCSI Interface Figure 8-46 MODE SENSE (10) Data Header 7 6 5 0 Byte Bit 4 3 2 1 0 Density Code (MSB) 1 2 Number of Blocks (000000h) (LSB) 3 4 Reserved (MSB) 5 6 Block Length (LSB) 7 Figure 8-47 MODE SENSE Block Descriptor 7 0 Byte 6 PS 5 Bit 4 3 0 2 1 0 Page Code 1 Additional Page Length 2 Page Defined or Vendor-Unique Parameter Bytes Figure 8-48 MODE SENSE Page Descriptor Data Length The Sense Data Length specifies the length in bytes of the following MODE SENSE dat
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DLT2000 SCSI Interface WP A Write-Protected bit of zero indicates that the tape is write-enabled. A Write-Protected bit of one indicates that the tape is write-protected. Buffered Mode The drive implements Immediate Reporting on WRITE commands through Buffered mode. If the field is zero, then the drive does not report a GOOD status on WRITE commands until the data blocks are actually written to tape.
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DLT2000 SCSI Interface Block Length This specifies the length in bytes of each logical block transferred over the SCSI bus. A block length of zero indicates that the length is variable (as specified in the I/O command). Any other value indicates the number of bytes per block that will be used for read, write, and verify type commands that specify a "Fixed" bit of 1 (fixed block mode).
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DLT2000 SCSI Interface 8.4.10.2 MODE SENSE Pages Following the block descriptor are the MODE SELECT pages, which set the device parameters. Each page has a 2-byte header which identifies the page code and indicates the number of bytes in that page.
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DLT2000 SCSI Interface 8.4.10.3 Control Mode Page (0Ah) The Control Mode Page allows you to determine whether the DLT2000 will return Check Condition status when one of its write and read error counters reaches a specified threshold.
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DLT2000 SCSI Interface QErr (Queue Error) The value returned for this field is 0. DQue (Disable Queuing) The value returned for this field is 0. EECA (Enable Extended Contingent Allegiance) The DLT2000 does not support extended contingent allegiance, so the value returned for this field is 0. RAENP (Ready AEN Permission) The DLT2000 does not support asynchronous event notification (AEN), so the value returned for this field is 0.
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DLT2000 SCSI Interface 8.4.10.
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DLT2000 SCSI Interface Write Buffer Full Ratio and Read Buffer Empty Ratio These indicate how full/empty the buffer memory should be before restarting the writing/reading of the media. The DLT2000 will set these fields to zero (unused) because it uses an automatic, adaptive mechanism to dynamically adjust its full/empty ratios according to the average data rates over the SCSI bus.
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DLT2000 SCSI Interface 8.4.10.5 Data Compression Page (0Fh) The Data Compression Page specifies parameters for the control of data compression.
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DLT2000 SCSI Interface DCE (Data Compression Enable) The Data Compression Enable bit indicates whether data compression is enabled. The value returned for this bit depends on the current write density of the DLT2000 as follows: 0 - Data compression is disabled. 1 - Data compression is enabled.
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DLT2000 SCSI Interface 8.4.10.
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DLT2000 SCSI Interface 8.4.10.
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DLT2000 SCSI Interface 8.4.10.
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DLT2000 SCSI Interface Write Retry Count This field reports the maximum number of overwrite retries that will be performed before declaring an unrecoverable error.
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DLT2000 SCSI Interface 8.4.10.9 EEROM Vendor Unique Page (3Eh) The drive supports the EEROM vendor unique page (3Eh). All the EEROM parameters that are settable through MODE SELECT EEROM vendor unique page are returned.
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DLT2000 SCSI Interface 8.4.11 PREVENT/ALLOW MEDIUM REMOVAL (1Eh) Bit 7 6 0 1 Byte 5 4 2 1 0 Operation Code (1Eh) Logical Unit Number Reserved 2 Reserved 3 Reserved 4 5 3 Reserved Unused Reserved Prevent Flag Link Figure 8-56 PREVENT/ALLOW MEDIUM REMOVAL CDB This command enables or disables the unloading of the tape cartridge. Prevent If this bit is set, the Unload button on the drive front panel is effectively disabled, and the UNLOAD command will not unload the media or the cartridge.
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DLT2000 SCSI Interface 8.4.12 READ (08h) Bit 7 6 0 1 2 Byte 5 4 3 2 1 0 SILI Fixed Operation Code (08h) Logical Unit Number Reserved (MSB) 3 Transfer Length 4 5 (LSB) Unused Reserved Flag Link Figure 8-57 READ CDB READ transfers one or more data blocks to the initiator starting with the next block on the drive. Fixed This bit specifies the meaning of the Transfer Length field and whether fixed-length or variable-length blocks are to be transferred.
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DLT2000 SCSI Interface Incorrect Length Indicator (ILI) bit and Valid bit will be set to one. The Sense Key field will be set to NO SENSE. The Information Bytes will be set to the difference (residue) between the requested transfer length and the actual block length, or in Fixed Blocked Mode, the difference (residue) between the requested number of blocks and the actual number of blocks read.
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DLT2000 SCSI Interface 8.4.13 READ BLOCK LIMITS (05h) Bit 7 6 5 0 3 2 1 0 Flag Link Operation Code (05h) 1 Byte 4 Logical Unit Number Reserved 2 Reserved 3 Reserved 4 Reserved 5 Unused Reserved Figure 8-58 READ BLOCK LIMITS CDB READ BLOCK LIMITS tells the drive to return its limits for block length. The READ BLOCK LIMITS data shown below is sent during the DATA IN phase of the command. The command does not reflect the currently selected block size, only the available limits.
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DLT2000 SCSI Interface 8.4.14 READ BUFFER (3Ch) Bit 7 6 0 1 Byte 4 3 2 1 0 Operation Code (3Ch) Logical Unit Number 2 3 5 Reserved Mode Buffer ID (MSB) 4 Buffer Offset 5 6 (LSB) (MSB) Allocation Length 7 (LSB) 8 9 Unused Reserved Flag Link Figure 8-60 READ BUFFER CDB READ BUFFER is used in conjunction with WRITE BUFFER as a diagnostic function for testing the drive's data buffer and the SCSI bus integrity. Mode The drive supports the following values within the field.
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DLT2000 SCSI Interface Allocation Length The Allocation Length specifies the maximum number of bytes that the initiator has allocated for returned data. 8.4.14.1 Combined Header and Data Mode In this mode, the drive returns a 4-byte header followed by the data bytes. The drive terminates the DATA IN phase when Allocation Length bytes of header and data have been transferred, or when all available data has been transferred to the initiator, whichever is less.
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DLT2000 SCSI Interface 7 0 Byte 1 2 6 5 Bit 4 3 2 1 0 Offset Boundary (0Ch) (MSB) Buffer Capacity 3 4 (LSB) Figure 8-63 READ BUFFER Descriptor DLT2000/DLT2700 Cartridge Tape Subsystem 8-95
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DLT2000 SCSI Interface 8.4.15 READ POSITION (34h) Bit 7 6 0 1 Byte 5 4 3 1 0 Operation Code (34h) Logical Unit Number Reserved 2 Reserved 3 Reserved 4 Reserved 5 Reserved 6 Reserved 7 Reserved 8 Reserved 9 2 Unused Reserved BT Flag Link Figure 8-64 READ POSITION CDB The READ POSITION command is used to read a position identifier, or SCSI Logical Block Address.
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DLT2000 SCSI Interface 8.4.15.1 READ POSITION Data Format Bit 0 Byte 7 6 BOP EOP 5 4 3 Reserved 1 Partition Number 2 3 Reserved 4 2 BPU 1 0 Reserved (MSB) 5 First Block Location 6 7 8 (LSB) (MSB) 9 Last Block Location 10 (LSB) 11 Reserved 12 13 (MSB) Number of Blocks in Buffer 14 (LSB) 15 16 (MSB) 17 Number of Bytes in Buffer 18 (LSB) 19 Figure 8-65 READ POSITION Data Format The BOP and EOP bits will be set as appropriate.
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DLT2000 SCSI Interface First Block Location The block address associated with the current logical position; the next block to be transferred between the target and initiator if a READ or WRITE command is issued. Last Block Location The block address associated with the current physical position; the next block to be transferred to the media and from the target's buffer. If the buffer is empty, or has only a partial block, the same value as First Block Location will be reported.
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DLT2000 SCSI Interface 8.4.16 RECEIVE DIAGNOSTICS RESULTS (1Ch) Bit 7 6 5 0 4 Logical Unit Number 1 0 Reserved Reserved 2 3 2 Operation Code (1Ch) 1 Byte 3 (MSB) Allocation Length 4 (LSB) 5 Unused Reserved Flag Link Figure 8-66 RECEIVE DIAGNOSTICS RESULTS CDB RECEIVE DIAGNOSTIC RESULTS tells the drive to send analysis data to the initiator after completion of a SEND DIAGNOSTIC command. The following data will be returned by this command.
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DLT2000 SCSI Interface 8.4.17 RELEASE UNIT (17h) Bit 7 6 0 1 Byte 5 4 3 1 0 Operation Code (17h) Logical Unit Number 3rdPty Third Party Device ID 2 Reserved 3 Reserved 4 Reserved 5 2 Unused Reserved Flag Rsvd Link Figure 8-68 RELEASE UNIT CDB RELEASE UNIT releases the drive if it is currently reserved by the requesting initiator. It is not an error to attempt to release the drive if it is not currently reserved by the requesting initiator.
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DLT2000 SCSI Interface 8.4.18 REQUEST SENSE (03h) Bit 7 6 0 1 Byte 5 4 3 2 0 Flag Link Operation Code (03h) Logical Unit Number Reserved 2 Reserved 3 Reserved 4 Allocation Length 5 1 Unused Reserved Figure 8-69 REQUEST SENSE CDB REQUEST SENSE tells the target to transfer sense data to the initiator. The sense data is valid for a CHECK CONDITION or RESERVATION CONFLICT status returned on the previous command.
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DLT2000 SCSI Interface 8.4.18.
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DLT2000 SCSI Interface Bit 7 6 5 4 3 2 1 0 25 (MSB) Byte 26 27 Tape Remaining 28 (LSB) Figure 8-70 REQUEST SENSE Data Cont’d Valid A Valid bit of one indicates that the information bytes contain valid information as defined in the SCSI specification. Error-Code A value of 70h indicates a current error – the report is associated with the most recently received command.
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DLT2000 SCSI Interface Sense Key In most cases, Additional Sense Code and/or Qualifier information is available. See the tables later in this section. Information Bytes These bytes contain the differences (residue) of the requested length minus the actual length in bytes, blocks, or Filemarks, as determined by the command. Negative values are indicated by two's complement notation.
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DLT2000 SCSI Interface Tape Motion Hours Report the number of tape motion hours, that is, the head wear hours. Format is represented in a hex decimal word (2 bytes). Power On Hours Report the total hours the drive power has been on. Format is represented in a hex decimal longword (4 bytes). Tape Remaining Report the amount of tape remained in 4096 bytes block.
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DLT2000 SCSI Interface Table 8-5 Sense Keys Used Sense Description Key 0h 1h 2h 3h 4h 5h 6h 7h 8h Bh Dh Eh No Sense. Check the Filemark/EOM/ILI bits and the ASC/Q bytes. Recovered Error. This can be caused by rounding of Mode Parameters on a Mode Select, or to report that R/W error rates are reaching subsystem specification limits for optimal operation. However, the device may still be able to continue to function without any unrecovered errors for a long period of time. Not Ready.
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DLT2000 SCSI Interface Table 8-6 Additional Sense Codes/Qualifiers Used ASC ASCQ Description 00h 01h 02h 03h 04h 05h No Additional Sense Code No additional sense qualifier Unexpected FM Encountered End of Medium Encountered SetMark Encountered Beginning of Medium Encountered EOD Encountered 00h 01h 02h 03h Unit not ready Cause nonreportable Calibration in process Load command needed Manual Intervention needed 08h 00h 01h LUN Communications Failure LUN Communications Timeout 0Ah 00h Error Log Ov
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DLT2000 SCSI Interface Table 8-6 Additional Sense Codes/Qualifiers Used (Cont’d) ASC ASCQ Description 20h 00h Illegal opcode 21h 01h* Invalid Element Address 24h 00h 81h 82h 84h 86h 87h 89h 8Bh 8Ch 8Dh 8Eh 8Fh Invalid CDB field Invalid mode on write buffer Media in drive Insufficient resources Invalid offset Invalid size Image data over limit Image/personality is bad Not immediate command Bad drive/servo image EDC Invalid personality for CUP Bad controller image EDC 25h 00h Illegal LUN 00h 0
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DLT2000 SCSI Interface Table 8-6 Additional Sense Codes/Qualifiers Used (Cont’d) ASC ASCQ Description 2Fh 00h Commands Cleared by another Initiator 30h 00h Cannot read medium 37h 00h Rounded Parameter 39h 00h Saving Parameters Not Supported 3Ah 00h 80h Media Not Present VU Cartridge Missing 3Bh 00h 08h 0Dh* 0Eh* Sequential Positioning Error Reposition Error Media Destination Element Full Media Source Element Empty 3Dh 00h Invalid Bits in ID Msg 3Fh 01h Microcode has been changed
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DLT2000 SCSI Interface Table 8-6 Additional Sense Codes/Qualifiers Used (Cont’d) ASC ASCQ Description 44h 00h 80h 82h 83h 84h 85h 86h 87h 88h C1h C2h C3h Internal Target Failure Unexpected Selection Interrupt Command complete sequence failure SCSI chip Gross Error Unexplained Residue in TC Registers Immediate data transfer timeout Insufficient CDB bytes Disconnect/SDP sequence failed Bus DMA Transfer Timeout EEPROM copy 1 area bad EEPROM copy 2 area bad Both EEPROM copies bad 45h 00h Select/Reselec
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DLT2000 SCSI Interface Table 8-6 Additional Sense Codes/Qualifiers Used (Cont’d) ASC ASCQ Description 5Bh 01h 02h Threshold Condition Met Log Counter at Maximum 80h 00h 01h 02h Calibration Error Cleaning Required Cleaning Requested 81h 00h Directory Read Error 82h 00h Not allowed if not at BOT * = Medium Changer specific commands DLT2000/DLT2700 Cartridge Tape Subsystem 8-111
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DLT2000 SCSI Interface 8.4.19 RESERVE UNIT (16h) Bit 7 6 5 0 1 Byte 4 3 1 0 Operation Code (16h) Logical Unit Number 3rdPty Third-Party Device ID 2 Reserved 3 Reserved 4 Reserved 5 2 Unused Reserved Flag RsvdD Link Figure 8-71 RESERVE UNIT CDB RESERVE UNIT reserves the specified drive for exclusive use by the requesting initiator or for another specified SCSI device.
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DLT2000 SCSI Interface SCSI device specified in the Third-Party Device ID field. The drive preserves the reservation until any one of the four conditions mentioned above occurs. The drive ignores any attempt made by any other initiator to release the reservation and returns a GOOD status. An initiator that holds a current reservation may modify that reservation (for example, to switch third-parties) by issuing another RESERVE UNIT to the drive. 8.4.19.
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DLT2000 SCSI Interface 8.4.20 REWIND (01h) Bit 7 6 5 0 1 Byte 4 3 1 0 Operation Code (01h) Logical Unit Number Reserved 2 Reserved 3 Reserved 4 Reserved 5 2 Unused Reserved Immed Flag Link Figure 8-72 REWIND CDB REWIND tells the drive to position the tape at the beginning of the currently active partition. Before rewinding, the drive writes any write data that is buffered to the tape, and appends an EOD marker.
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DLT2000 SCSI Interface 8.4.21 SEND DIAGNOSTIC (1Dh) Bit 7 6 5 0 1 3 3 2 1 0 Operation Code (1Dh) Logical Unit Number PF Rsv’d Selftst Dev OfL UnitOfL Reserved 2 Byte 4 (MSB) Parameter List Length 4 5 (LSB) Unused Reserved Flag Link Figure 8-73 SEND DIAGNOSTIC CDB SEND DIAGNOSTIC tells the drive to perform diagnostic tests on itself. The Page Format field is not supported and must be zero.
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DLT2000 SCSI Interface - Writes 100 32 KB records on track 1. - Repositions to the beginning of track 1. - Reads the records. - Rewinds the tape. The execution time for the test is 6 minutes, if calibration is not required. This test is specified by setting the Self-Test and UnitOfL bits, and zeroing the DevOfL bit. This test can accept a parameter list specifying test variables, as shown in the next table.
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DLT2000 SCSI Interface Table 8-7 Send Diagnostics Parameters Selftest DevOfL UnitOfL 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 Selftest Action Illegal combination Self-Test 2 with default parameters Illegal combination Self-Test 2 with default parameters Self-Test 1 with default parameters Self-Test 2 with default parameters Self-Test 1 with default parameters Self-Test 2 with default parameters Bit 7 0 6 5 4 3 2 1 0 (MSB) Pattern Number 1 2 (LSB) (MSB) Maximum Number of Test Passes
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DLT2000 SCSI Interface Table 8-8 Definition of Pattern Numbers Pattern Name Data in Hex 0 Rotate (Rotate through the other 9 patterns, change for each tape file) 00 00 00 00 00 FF FF FF FF FF 55 5A AA A5 55 5A AA A5 01 02 04 08 10 20 40 80 FE FD FB F7 EF DF BF 7F 0E 0E 0E 0E 0E 0E 0E 0E DE AD DE AD DE AD DE AD AA AA AA AA AA AA AA AA 1 All 0's 2 2F 3 Alternating 1's and 0's 4 Marching 1 5 Marching 0 6 MW 7 MFM 8 1F 9 Random Data If the Max Number of Passes is zero, this indicates to loop forever.
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DLT2000 SCSI Interface Table 8-9 Sense Keys Used Sense Key 3h 4h 5h Eh Description Medium Error. A positioning error has occurred where the returned position does not match the expected. Hardware Error. The Additional Sense Code/Qualifier fields will provide more specific information. ILLEGAL REQUEST. Illegal bit settings in the SEND DIAGNOSTIC command. Miscompare. A compare error occurred during a read.
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DLT2000 SCSI Interface 8.4.22 SPACE (11h) Bit 7 6 5 0 1 2 Byte 4 3 2 1 Operation Code (11h) Logical Unit Number Reserved Code (MSB) 3 Count 4 5 0 (LSB) Unused Reserved Flag Link Figure 8-75 SPACE CDB SPACE provides a variety of positioning functions that are determined by Code and Count fields in the Command Descriptor Block. Both forward (toward EOM/P) and reverse (toward BOM/P) positioning are provided.
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DLT2000 SCSI Interface Count When spacing over blocks or marks, the Count field is interpreted as follows: • A positive value N causes forward movement over N blocks or marks. The tape is logically positioned after the Nth block or mark on the EOM/P side. • A zero value causes no change in the logical position. • A negative value -N (two's complement notation) causes reverse movement over N blocks or marks. The tape is logically positioned on the BOM/P side of the Nth block or mark.
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DLT2000 SCSI Interface 8.4.23 TEST UNIT READY (00h) Bit 7 6 0 1 Byte 5 4 3 1 0 Flag Link Operation Code (00h) Logical Unit Number Reserved 2 Reserved 3 Reserved 4 Reserved 5 2 Unused Reserved Figure 8-77 TEST UNIT READY CDB TEST UNIT READY checks if the drive unit is ready for commands involving tape movement. If the drive has a tape loaded, the command returns a GOOD status. Otherwise, CHECK CONDITION is reported.
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DLT2000 SCSI Interface 8.4.24 VERIFY (13h) Bit 7 6 5 0 1 2 Byte 4 3 2 1 0 Immed BC Fixed Operation Code (13h) Logical Unit Number Reserved (MSB) 3 Verification Length 4 5 (LSB) Unused Reserved Flag Link Figure 8-78 VERIFY CDB VERIFY verifies one or more blocks beginning with the next block on the tape. Both CRC and EDCs are validated. Immed If this bit is set, the Verify command will complete before any media movement is done (that is, when processing has been initiated).
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DLT2000 SCSI Interface 8.4.25 WRITE (0Ah) Bit 7 6 5 0 1 Byte 4 3 2 1 0 Operation Code (0Ah) Logical Unit Number Reserved Fixed 2 (MSB) 3 Transfer Length 4 5 (LSB) Unused Reserved Flag Link Figure 8-79 WRITE CDB WRITE transfers one or more blocks from the host to the current logical position. When in Buffered Mode (see MODE SELECT), the tape drive reports a GOOD status on WRITE commands as soon as this data block has been transferred to the data buffer.
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DLT2000 SCSI Interface Fixed The fixed bit specifies both the meaning of the Transfer Length field and whether fixedlength or variable-length blocks are to be transferred. If the Fixed bit is set to zero, Variable Block mode is selected. A single block is transferred from the initiator and is written to the logical unit beginning at the current logical tape position. Upon successful termination, the tape is logically positioned after this block (EOM/P side).
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DLT2000 SCSI Interface 8.4.26 WRITE BUFFER (3Bh) Bit 7 6 0 1 4 3 2 1 0 Operation Code (3Bh) Logical Unit Number 2 Byte 5 Reserved Mode Buffer ID (00h) 3 (MSB) 4 Buffer Offset (000000h) 5 6 (LSB) (MSB) 7 Parameter List/Data Length 8 9 (LSB) Unused Reserved Flag Link Figure 8-80 WRITE BUFFER CDB WRITE BUFFER is used with READ BUFFER as a diagnostic function for testing the device data buffer, DMA engine, SCSI bus interface hardware, and SCSI bus integrity.
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DLT2000 SCSI Interface 8.4.26.1 Header and Data Mode The data to be transferred is preceded by a 4-byte header consisting entirely of reserved bytes. This header is discarded (not stored into the buffer). The buffer offset field must be zero for this mode. 8.4.26.2 Write Data Similar to mode 000b, except there is no header in the data passed to the target. The Buffer Offset must be zero. Potential buffer overruns are detected and the command is rejected. 8.4.26.
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DLT2000 SCSI Interface __________________________Note _____________________________ During the actual reprogramming of the FLASH memory chips, if any type of powerfail occurs, or if the reprogramming fails part way through, the subsystem will be unusable, and the controller board will need to be replaced.
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DLT2000 SCSI Interface 8.4.27 WRITE FILEMARKS (10h) Bit 7 6 5 0 1 Byte 2 4 3 2 1 0 WSmk Immed Operation Code (10h) Logical Unit Number Reserved (MSB) 3 Number of Filemarks 4 5 (LSB) Unused Reserved Flag Link Figure 8-82 WRITE FILEMARKS CDB WRITE FILEMARKS causes the specified number of Filemarks to be written beginning at the current logical position on tape. If the Immed bit is not set, any data or Filemarks in the write cache buffer are written to tape.
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DLT2000 SCSI Interface Additional Sense Code Qualifier fields are set to EOM/P detected. The drive will attempt to complete any subsequent WRITE FILEMARKS, returning a CHECK CONDITION status in each case. If the drive encounters the physical EOM when attempting a WRITE FILEMARKS, CHECK CONDITION status is returned.
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DLT2000 SCSI Interface 8.5 Supported SCSI-2 Medium Changer Device Commands On the Medium Changer LUN, only commands defined for this device type are allowed.
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DLT2000 SCSI Interface 8.5.1 INITIALIZE ELEMENT STATUS (07h) Bit 7 6 0 1 Byte 5 4 3 1 0 Flag Link Operation Code (07h) Logical Unit Number Reserved 2 Reserved 3 Reserved 4 Reserved 5 2 Unused Reserved Figure 8-83 Initialize Element Status CDB This command causes the medium changer to initialize the element status.
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DLT2000 SCSI Interface 8.5.
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DLT2000 SCSI Interface 8.5.2.
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DLT2000 SCSI Interface 8.5.2.
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DLT2000 SCSI Interface 8.5.2.
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DLT2000 SCSI Interface The Source Element Address will always be set to this element's address.
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DLT2000 SCSI Interface 8.5.2.
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DLT2000 SCSI Interface 8.5.3 MODE SENSE/SELECT (1Ah/15h) All three pages that are specific to Medium Changers are supported. 8.5.3.
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DLT2000 SCSI Interface The medium changer does not support "ST->ST" or "DT->DT".
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DLT2000 SCSI Interface 8.5.3.
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DLT2000 SCSI Interface Medium Changer Element Address assignment is as follows: Table 8-12 Medium Changer Element Addresses Address Comments 0 1 2-0Fh 10h 11h-0FFh 100h 101h 102h 103h 104h 105h 106h 107h-0FFFFh Default Medium Transport Element Medium Transport Element Reserved Data Transfer Element (tape drive) Reserved Medium Storage Element (Magazine slot 0) Medium Storage Element (Magazine slot 1) Medium Storage Element (Magazine slot 2) Medium Storage Element (Magazine slot 3) Medium Storage Element
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DLT2000 SCSI Interface 8.5.3.3 Transport Geometry Parameters Page (1Eh) The drive shall support the Transport Geometry Page which has the following format: 7 0 Byte 1 2 3 6 PS 5 0 Bit 4 3 2 1 0 Page Code (1Eh) Additional Page Length (02h) Reserved Rotate Member Number in Transport Element Set (0) Figure 8-92 Transport Geometry Page Format Rotation of media is not appropriate for this type of Loader, so the Rotate bit is zero.
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DLT2000 SCSI Interface 8.5.4 MOVE MEDIUM (A5h) 7 6 0 Bit 4 5 3 2 1 Operation Code (A5h) 1 Logical Unit Number 2 (MSB) Reserved Transport element Address (LSB) 3 Byte 4 (MSB) Source Address (LSB) 5 6 (MSB) Destination Address (LSB) 7 8 Reserved 9 Reserved 10 Reserved 11 0 Unused Reserved Flag Link Figure 8-93 MOVE MEDIUM CDB The Move Medium command is used to move cartridges from the tape drive to the magazine slot it came from, or from any magazine slot to the tape drive.
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DLT2000 SCSI Interface DLT2000/DLT2700 Cartridge Tape Subsystem 8-145
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Appendix A Technical Specifications A.1 In This Appendix Appendix A contains specifications for the DLT2000 tape drive and the DLT2500/DLT2700 mini-library including: Topic Section Physical Description Performance Specifications Environmental Specifications Vibration and Shock Specifications Electromagnetic Interference (EMI) Susceptibility Regulatory Requirements Drive Reliability Factors CompacTape Recording Media Specifications A.2 A.3 A.4 A.5 A.6 A.7 A.8 A.
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Technical Specifications A.2 Physical Description Table A-1 lists the key physical and functional specifications of the DLT2000 tape drive. Table A-1 DLT2000 Physical Specifications Description Height Width Length Weight Shipping Weight Environmental temperature Operating Nonoperating Humidity Operating Nonoperating Certifications EMI Safety Drive 5 1/4 inch FH (modified depth) 82.5 mm (3.25 in) without bezel 86.3 mm (3.4 in) with bezel 144.8 mm (5.7 in) behind bezel 148.3 mm (5.84 in) with bezel 228.
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Technical Specifications Table A-1 DLT2000 Physical Specifications (cont'd) Description Electrical rating, (Auto ranging) Power Requirements Drive 5 1/4 inch FH (modified depth) D.C. Supply Table Top 100 to 240 Vac D.C. 22 W steady state/33 W, maximum A.C. 50W, maximum 2.5 A steady state/3.0 A maximum 0.8 A steady state/3.0 A maximum N/A N/A Communication interface SCSI-2 bus 8 bits (single-ended or differential) with a separate SCSI LUN ID for the mini-library and tape drive.
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Technical Specifications A.2.1 Identifying the Correct AC Power Cord ________________________ Warning ______________________ Do not attempt to modify or use an external 100 - 115 VAC power cord for 220 - 240 VAC input power. Modifying the power cord can cause personal injury and severe equipment damage. _______________________________________________________ An AC power cord was supplied with your unit.
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Technical Specifications Figure A-1 shows the different AC power cord plug configurations for 115V and 220V/240V usage.
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Technical Specifications Table A-2 lists the key functional specifications of the DLT2000 tape drive. Table A-2 DLT2000 Functional Specifications Functions Specifications CompacTape III: Capacity/formatted native Capacity/formatted compressed 2:11 10.0 GB (standard 1167 ft. tape) user data 20.0 GB (standard 1167 ft. tape) user data Interface 8 bit SCSI-2, single ended or differential Drive Type DLT, streaming, 10.0/20.
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Technical Specifications Table A-3 lists the key physical specifications for the DLT2500 mini-library. Table A-3 DLT2500 Mini-Library Physical Specifications Description Height Width Length Weight Rack Mount 295 mm (11.6 in) 414 mm (16.3 in) 259 mm (10.2 in) 12 kg (27 lb) Table Top 300 mm (11.8 in) 414 mm (16.3 in) 267 mm (10.5 in) 15.9 kg (35 lb) 10°C to 40°C (50°F to 104°F) -40°C to 66°C (-40°F to 150.8°F) 10°C to 40°C (50°F to 104°F) -40°C to 66°C (-40°F to 150.
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Technical Specifications Table A-4 lists the key physical specifications for the DLT2700 mini-library. Table A-4 DLT2700 Mini-Library Physical Specifications Description Height Width Length Weight Rack Mount 26.47 cm (10.42 in) 22.20 cm (8.74 in) 68.5 cm (27.0 in) 24.95 kg (55 lb) Table Top 27.25 cm (10.73 in) 22.54 cm (8.875 in) 68.5 cm (27.0 in) 29.54 kg (65 lb) 10°C to 40°C (50°F to 104°F) -40°C to 66°C (-40°F to 150.8°F) 10°C to 40°C (50°F to 104°F) -40°C to 66°C (-40°F to 150.
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Technical Specifications Figure A-2 shows the mounting holes and dimensions in a top view of the DLT2000 drive. 5.700 (144.78) 5.500 (139.70) 5.84 (148.3) .100 (2.54) 3.125 (79.38) 1.875 (47.63) ZKO-1217-11-DG Figure A-2 Mounting Hole Dimensions (Top View) Tape drive width and height are standard 5-1/4 inch disk drive form factor measurements. Both dimensions hold tolerances of ± 0.020 inches. Depth dimensions have tolerances of +00, -0.040 in.
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Technical Specifications Figure A-3 shows the mounting holes and dimensions in a side view of the DLT2000 drive. 9.600 (243.84) 9.000 (228.60) 8X 6-32UNC-2B .25 (6.4) FULL THREAD 3.250 (82.55) 3.40 (86.4) .820 (20.83) 3.125 (79.38) 1.875 (47.
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Technical Specifications A.3 Performance Specifications Section A.3 describes performance specifications including: Topic Section Nominal Tape Tension DLT2000 Timing Characteristics DLT2700 Media Loader Timing Characteristics A.3.1 A.3.2 A.3.4 A.3.1 Nominal Tape Tension Nominal tape tension is: 3.0 ± 1 oz when stationary 4.7 ± 1 oz at operating speed A.3.
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Technical Specifications A.3.3 DLT2500xt Media Loader Timing Characteristics Table A-6 lists timing characteristics of the DLT2500xt media loader. Table A-6 DLT2500xt Media Loader Timing Characteristics Nominal magazine scan Move cartridge slot to drive Move cartridge drive to slot Error recovery Load media on to drive & ready for I/O processing Unload media from drive to cartridge (from BOT) 12.0 sec 11.4 sec 17.1 sec 51.0 sec 48.0 sec 17.0 sec A.3.
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Technical Specifications The tape drive conforms to a modified Class B environment that includes general offices and workspaces with: • Conditioned and marginally-conditioned areas with central or remote air-conditioning • Complete temperature and humidity controls • Moderate control tolerances • Systems capable of maintaining comfort levels (for example, typical offices and general work areas) • Marginal heating or cooling apparatus • No humidity conditioning • Uncontrolled tolerances • Systems inadequate
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Technical Specifications Table A-10 lists the storage ranges.
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Technical Specifications A.5 Vibration and Shock Specifications Section A.5 describes environmental specifications: Topic Section Operating Shock and Vibration Nonoperating Shock and Vibration A.5.1 A.5.2 A.5.1 Operating Shock and Vibration Table A-12 lists operating vibration specifications and Table A-13 lists operating shock specifications. Table A-12 Operating Vibration Specifications Vibration type Frequency range Acceleration level Sine 5−500-5 Hz 0.25 g 0.
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Technical Specifications A.5.2 Nonoperating Shock and Vibration Table A-14 lists nonoperating shock (bench handling) specifications for the product without its shipping packaging.
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Technical Specifications Table A-16 Nonoperating (Packaged) Repetitive Shock Specifications Excitation type Shock (bounce) cycles Application Synchronous vertical motion; 1 in excursion 14,200 total Half cycles each in x and y orientations; 1/2 7100 cycles in the x orientation, 1\2 7100 cycles in the y orientation Table A-17 Nonoperating (Packaged) Shock (Drop) Specifications Test type Drop height Application Drop shock 30 in - items < 20.9 lbs 24 in - 21 < items < 40.9 lbs 18 in - 41 < items < 60.
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Technical Specifications Table A-19 Nonoperating (Unpackaged) Shock Specifications Nonoperating (Unpackaged) Pulse shape Peak acceleration Duration Application Square wave 40 G 180 in/sec X, Y, and Z axes, twice in each axis Pulse shape Peak acceleration Duration Application 1/2 sine pulse 140 G 2 ms X, Y, and Z axes, twice in each axis A-18 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Technical Specifications A.6 Electromagnetic Interference (EMI) Susceptibility Section A. describes electromagnetic interference specifications including: Topic Section Electromagnetic Emissions Conducted Emissions Radiated Emissions Magnetic Radiated Susceptibility Radiated Susceptibility Conducted Susceptibility ESD Failure Level Limits Acoustic Noise Emissions A.6.1 A.6.2 A.6.3 A.6.4 A.6.5 A.6.6 A.6.7 A.6.8 A.6.1 Electromagnetic Emissions Electromagnetic emissions include: CSA 108.
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Technical Specifications Table A-20 list the conducted emission limits. Table A-20 Conducted Emissions Frequency Range (MHz) Limits dB Quasi-peak Average 0.15 to 0.050 66 to 56* 56 to 46 0.50 to 5 56 46 5 to 30 60 50 *The limit decreases with the logarithm of the frequency. A.6.3 Radiated Emissions Limits of radiated interference field strength, in the frequency range from 30 MHz to 30 GHz at a test distance of 3 and 10 meters, for Class B equipment are listed in table A21.
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Technical Specifications A.6.5 Radiated Susceptibility Table A-23 lists the radiated susceptibility limits: Table A-23 High Frequency, Electric Fields, 1 to 1000 Mhz 3 V/m (rms) 80% modulated 1 kHz No errors, no screen distortion S/W recoverable errors No hardware failure A.6.6 Conducted Susceptibility The transient voltage is the actual peak voltage above the normal ac voltage from the power source.
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Technical Specifications A.6.7 ESD Failure Level Limits Table A-27 lists the ESD failure level limits for normal operator access areas. Table A-27 ESD Failure Level Limits Failure Type Equipment Failure Level Allowable Errors Hard Office 1 to 12 kV Hardware Office Up to 15 kV No operator intervention (soft recoverable allowed) No component damage (soft/hard errors allowed) A.6.
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Technical Specifications Table A-28 Acoustic Noise Declaration for German Noise Declaration Law (Cont’d) Generic Product Option Numbers TH3xx TH3Bx TH3Ex TH3Fx Description DLT2000 drive DLT2000 table top drive DLT2700 cartridge rackmount loader DLT2700 cartridge table top loader DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem A-23
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Technical Specifications A.7 Regulatory Requirements Regulatory requirements include: • Safety • Electromagnetic emissions A.7.1 Safety Requirements Safety requirements include: • UL1950 - Information Technology Including Electrical Business Equipment • CSA C22.2 #220 - Information Technology Including Electrical Business Equipment • TUV EN60950 - Information Technology Including Electrical Business Equipment A.7.
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Technical Specifications A.8 Drive Reliability Factors Table A-29 lists the reliability factors: Table A-29 Reliability Factors Design life Seven years Design life statistics provide the point at which statistical failure rate begins to rise. Head life 10,000 tape motion hours Continuous operation, under severe stress envelope with CompacTape media. MTBF 80,000 hours Quantum Corporation does not warrant that predicted MTBF is representative of any particular unit installed for customer use.
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Technical Specifications A.9 CompacTape Recording Media Specifications Table A-30 lists the media characteristics: Table A-30 CompacTape Recording Media Specifications CompacTape III Description Quantity Width Length Cartridge Dimensions Shelf Life 0.5 in metal particle 1200 ft 4.1 in x 4.1 in x 1.0 in 30 years min.
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Appendix B Definition of Vendor Unique Sense Data Information B.1 In This Appendix Appendix B lists the internal status codes with their descriptions. B.2 Internal Status Code The internal status code is located at byte offset 18 of the request sense data and may be available after certain types of failures. _________________________ Note _____________________________ This byte has two formats: a byte code, and a bit flags format.
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Definition of Vendor Unique Sense Data Information Table B-1 Internal Status Code (cont’d) Dec Hex Description 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 7 8 9 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 Logical EOT encountered, 2 file marks Command connection dropped Cleared from queue Missing data blockread only Gap within object (missing blocks in record) Record on tape larger than requested Compare
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Definition of Vendor Unique Sense Data Information Table B-1 Internal Status Code (cont’d) Dec Hex Description 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 Invalid source slot Invalid destination slot Source slot empty Destination slot full Medium changer motion error Medium changer/drive interface error Medium changer/slot interface error Medium changer mechanical error Medium changer hardware error Medium changer controller error Unrecognized
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Definition of Vendor Unique Sense Data Information B-4 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Appendix C Sense Key Information C.1 In This Appendix Appendix C lists the sense key information.
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Sense Key Information 04 02 Unit Not Ready, Load command needed 04 03 Unit Not Ready, Manual Intervention needed 3A 00 Medium Not Present 3A 80 Medium Not Present, Cartridge Missing 5A 01 Operator Media Removal Request • Medium Error (3): 04 02 Unit Not Ready, Load command needed 0C 00 Write Error 11 00 Unrecovered Read Error 11 08 Unrecovered Read Error, Incomplete block read 14 00 Recorded Entity Not Found 15 02 Position error detected by read of medium 30 00 Can't Read Medium 3B 00 Sequential positioni
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Sense Key Information 40 82 Diagnostic/POST failure, bad drive status 40 83 Diagnostic/POST failure, loader diags failure 40 84 Diagnostic/POST failure, POST soft failure 44 00 Internal Target Failure 44 80 Unexpected selection interrupt 44 83 SCSI chip gross error 44 84 Unexplained residue in TC registers 44 85 Immediate data transfer timeout 44 86 Insufficient CDB bytes 44 87 Disconnect/SDP sequence failed 44 88 Bus DMA transfer timeout 48 00 IDE Message received 47 00 SCSI Parity Error 51 00 Erase Failu
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Sense Key Information 24 8D Bad drive/server image EDC 24 8E Invalid personality for code update 24 8F Bad controller image EDC 25 00 Illegal LUN 26 00 Parameter List Error, invalid field 26 01 Parameter List Error, parameter not supported 26 02 Parameter List Error, parameter value invalid 39 00 Saving parameters not supported 3B 0D Media Destination Element Full 3B 0E Media Source Element Empty 3D 00 Invalid Bits in ID Message 53 02 Media Removal Prevented 82 00 Not allowed if not at BOT • Unit Attentio
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Sense Key Information 47 00 SCSI parity error 48 00 IDE Message received 49 00 Invalid Message Error 4E 00 Overlapped commands attempted • Volume Overflow (Dh): no additional sense code • Miscompare (Eh): no additional sense code _________________________ Note _____________________________ The Filemark/EOM/ILI bits may be set even though ASC/ASCQ = 00 00: ___________________________________________________________ (1) FM, EOM, ILI bit may be set with no sense key (0) and ASC/ASCQ = 00 00 (2) FM, EOM, I
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Sense Key Information C-6 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem
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Appendix D EEROM Resident Bugcheck and Event Logs D.1 EEROM Packets (Last n Error Events) The DLT2000 products keep certain error and event logs in semi-permanent nonvolatile memory (EEROM) on the ECM. There is room for a total of 14 such information packets in EEROM, each consisting of 98 bytes (96 data bytes plus 2 control bytes) of information.
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EEROM Resident Bugcheck and Event Logs Bits 7 00 0 Packet Type 01 96 1st packet byte . . . . . last packet byte 97 Packet Sequence Number / / / / / / / / / / Figure D-1 EEROM Log Area Layout Table D-1 EEROM LOG Packet Types Packet Type 0 1 2 3 4 5 Purpose Packet Empty Bugcheck - Fatal System Crash PO/ST (power on/self test) Failure EVENT LOG - Generic event informational (non-fatal) data CUP - Code Update Status Packet Manufacturing DIAG results packet D.
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EEROM Resident Bugcheck and Event Logs Bits 7 01 02 03 04 0 49 Up−Time Stamp 68020 A0−A7 Registers . . . / / / / / / 83 80 05 06 07 08 POH/PC Time Stamp 09 10 81 82 83 84 Error Code 11 12 85 86 87 88 68020 Status Register 13 14 15 16 89 90 91 92 68020 PC Register 17 / / / 68020 D0−D7 Registers . . .
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EEROM Resident Bugcheck and Event Logs D.3 PO/ST failure packets PO/ST failure packets are stored whenever the Power-On /Self-Test logic detects a failure of any kind. Each failure is encoded as a 4-byte vector. In some cases, multiple vectors may be stored, as shown in Figure D-3. Bits 7 01 02 03 04 0 POH/PC Time Stamp 05 06 07 08 POST Last Fail Vector 09 10 11 12 Secondary POST Vector 13 14 15 16 Tertiary POST Vector 17 / / / reserved . . . / / / 96 Figure D-3 POST LOG Packet Layout D.
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EEROM Resident Bugcheck and Event Logs Bits 7 01 02 03 04 0 Up−Time Stamp 05 06 07 08 POH/PC Time Stamp 09 10 Error Code 11 SW Major Revision 12 SW Minor Revision 13 / / / / / 92 1st event log byte . . . . .
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EEROM Resident Bugcheck and Event Logs Bits 13 7 0 Saved Max Overwrites 14 Saved Max ReReads 15 Saved Max ReWrites 16 17 18 19 20 Dir Called Mode Tape Format (when called) New Tape Format 21 Flags 22 Primary Status 23 Secondary Status 24 25 26 27 28 29 30 31 32 33 34 35 36 reserved Missing Block Count Total Expected LBNs Servo EOT Address Unique Media ID CR−MSG Buffer Address Figure D-5 Directory Failure Event Logs Saved Overwrites/ReReads/ReWrites These are fields are used as temporaries
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EEROM Resident Bugcheck and Event Logs 0x01 0x02 0x04 0x08 0x10 0x20 0x40 0x80 READ on Load operation complete Inhibit further WRITEs unless WRITE from BOT LBN 0 was found intact Directory WRITE failed Tape FORMAT Mismatch Event Log Generated Tape Format Unknown Reserved D.
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EEROM Resident Bugcheck and Event Logs Servo EOT Address Servo version of tape length. Unique Media ID The Unique Media Identification number, stored on the media. CR_MSG Address The address of the CR-MSG request block from TDS. D.6 Code Update (CUP) Status Packet The CUP status packet is written after every code update attempt regardless of its status. Refer to Figure D-6 for the overall packet layout.
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EEROM Resident Bugcheck and Event Logs Bits 01 02 03 04 7 0 POH/PC Time Stamp 05 68020 Fw Update Status 06 Servo Fw Update Status 07 08 reserved 09 Old 68020 Code Version 33 New 68020 Code Version 10 Old 68020 Code Sub−revision 34 New 68020 Code SubRev 35 New 68020 Rel Flag 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Old 68020 Rel Flag reserved Old 68020 Code EDC value Old 68020 Code Time Stamp 36 37 38 39 40 41 42 43 44 45 46 47 48 reserved New 68020 Code EDC value New 68020 Code Time
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EEROM Resident Bugcheck and Event Logs Table D-6 68020 Code Update Status Status 0 1 50 51 52 53 54 55 56 Meaning No Update Operation Performed Code Update Operation Successful Personality Lockout Image EDC Check Failed Bad Image Write to FLASH Memory Failed Erase of FLASH Memory Failed FLASH Memory Clear (zero) Failed Invalid Image Compressed) Table D-7 Servo Code Update Status Status 0 1 2 10 20 21 22 23 24 25 26 27 28 29 Meaning No Update Operation Performed Code Update Operation Successful Servo Upda
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Index A AC Power Cord, A-4 Acoustic noise emissions, A-22 Altitude environmental specifications, A-14 ATTENTION signal responses, 8-5 Automatic mode, 5-5, 5-7 B BACKUP command Automatic mode, 5-7 Backup failures, 6-3 Beeper, 3-11 Bugcheck Packets, D-2 BUS FREE, 8-7 BUS PARITY ERRORS, 8-7 Bus termination, 2-7 Button functions, conditions, 6-2 Button operation conditions for, 6-3 Buttons, operating, 4-9 C Cables connecting, 2-5 SCSI signal cable, 2-6 Capacity, 1-2 Cartridge, 3-17, 4-20 acclimatization, 3-26
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Index Controls cartridge insert/release handle, 3-11 description, 3-11 front panel, 3-10 Unload button, 3-11 DLT2500 Controller error description, 6-5 DLT2500 Drive error description, 6-5 DLT2500 Error conditions, 6-5 DLT2500 Errors, clearing for loader, drive, controller, or unknown, 6-6 DLT2500 Errors, clearing for magazine, 6-5 DLT2500 Loader error description, 6-5 DLT2500 Magazine status of, 6-5 DLT2500 Magazine error, 6-5 DLT2500 Mini-library operating procedure, 41 DLT2500 Mini-library, configure, i
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Index I Electromagnetic emissions, A-19 Electromagnetic interference (EMI), A-19 Element address assignment page, 8-140 Element status data header, 8-134 Embedded Diagnostics, 1-3 EMI electromagnetic interference, A-19 ERASE, 8-16 Error events, 8-41 ESD failure level limits, A-22 Event Log packets, D-4 Directory Failure Event Logs, D-5 Indicators beeper, 3-11 description, 3-11 front panel, 3-10 how to interpret, 3-14 INITIALIZE ELEMENT STATUS, 8-132 INQUIRY, 8-17 Insert cartridge, magazine, 4-23 Install
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Index Low-level conducted interference, A-21 LUNs, 8-2 M Magazine, 5-20 removing from receiver, 5-23 restoration into receiver, 5-23 Magazine door, open, 4-28 Magazine, description, 4-22 Magazine, installing, 4-26 Magazine, removing from mini-library, 4-26 Magnetic radiated susceptibility, A-20 Manual mode, 5-5, 5-7 Media, 1-2 Media loader inquiry response, 8-24 Medium Changer considerations, 8-113 Medium Changer Considerations, 8-100, 8122 Medium Partition, 8-60 page, 8-85 Messages, display, 4-11 Mini-li
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Index DLT2700 mini-library, 5-1 Operating procedure, DLT2500 mini-library, 4-1 Operating Shock, A-15 Operating Vibration, A-15 Operations initiator/target, 8-2 Operator Control Panel, 4-9 Operator Control Panel (OCP), 4-10 Overview, DLT2000/DLT2500/DLT2700, 1-1 disabling, 3-2 Performance specification DLT2000 tape drive, A-11 PO/ST failure packets, D-4 POST, 5-15 after you run it, 2-9 running, 2-8 POST, drive, 3-12 POST, events, 4-8 Power connectors, 3-6 Power cord connection, 2-7 Power problems, 6-8 Powe
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Index REWIND, 8-114 Storage ranges environmental specifications, A-14 Subsystem installation, 2-4 Supported SCSI-2 medium changer device commands, 8-131 Switch functions, density select, 4-18 Switch functions, normal mode, 4-17 Switch functions, SCSI ID Select, 4-19 S Safety requirements, A-24 SCSI ATTENTION signal responses, 8-5 BUS FREE, 8-7 BUS PARITY ERRORS, 8-7 bus phases, 8-4 bus reset, 8-3 functionality, 8-4 general operations, 8-1 interface overview, 8-1 message system, 8-8 STATUS phase, 8-5 tape
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Index VERIFY, 8-123 Vibration and shock requirements environmental specifications, A-15 Vital product data pages, 8-22 W WRITE, 8-124 WRITE BUFFER, 8-126 Write data, 8-127 WRITE FILEMARKS, 8-129 Write-protect switch, 3-17, 4-20, 4-21, 5-20 diagram, 3-18, 4-20 positioning, 3-17 write-enabling, 3-19 write-protecting, 3-19 Write-protect switch, positioning, 4-20 Write-protect switch,write-enabling, 4-21 Write-protect switch,write-protecting, 4-21 DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem-7
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Index 8-DLT2000/DLT2500/DLT2700 Cartridge Tape Subsystem