dt Educational Services Tx867 Series Magazine Tape Subsystem Owner’s Manual EK–TX867–OM–001 Digital Equipment Corporation
First Edition, July 1992 The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document. Copyright © Digital Equipment Corporation 1992 All Rights Reserved. Printed in U.S.A. FCC NOTICE: The equipment described in this manual generates, uses, and may emit radio frequency energy.
Contents Preface 1 ix Overview 1.1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 Node ID Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5.1 Loader Transfer Assembly . . .
iv Contents 2.5 Magazine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5.1 Inserting a Cartridge into the Front of the Magazine 2.5.2 Removing a Cartridge from the Magazine . . . . . . . . . 2.5.3 Removing the Magazine from the Receiver . . . . . . . . 2.5.4 Installing the Magazine into the Receiver . . . . . . . . . 3 . . . . . . . . . . . 2–8 . 2–8 . 2–11 . 2–11 . 2–11 TF867 Local Programs 3.1 3.1.1 3.2 3.3 3.4 3.4.1 3.4.2 3.4.3 3.4.4 3.4.5 3.4.6 3.4.7 3.5 3.6 3.7 4 . .
Contents v 5 Head Cleaning 5.1 Accessing the Tape Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1.1 Loading the CleaningTape III Cartridge into the Drive . . 5.1.2 Securing the Tx867 Magazine Tape Subsystem . . . . . . . . 5.2 Inserting the CleaningTape III Cartridge into the Magazine A VMS Operating System Commands A.1 Tape Device Specific Commands A.1.1 ALLOCATE Command . . . . . . A.1.2 DEALLOCATE Command . . . A.1.3 BACKUP Command . . . . . . . . A.1.4 MOUNT Command . . . . . . . .
vi Contents B.5.5 B.5.6 B.5.7 C C.1 C.2 C.3 C.4 C.5 C.6 Using the ltf Command . . . . . . . . . . . . . . . . . . . . . . . . . . . B–12 Using the mt Command . . . . . . . . . . . . . . . . . . . . . . . . . . . B–13 Using the cpio Command . . . . . . . . . . . . . . . . . . . . . . . . . . B–13 Service Offerings On-Site Service . . . BASIC Service . . . . DECservice Plan . . Carry-In Service . . . DECmailer Service . Per Call Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents vii Tables 1–1 1–2 1–3 1–4 1–5 1–6 2–1 3–1 3–2 4–1 B–1 B–2 B–3 B–4 B–5 B–6 B–7 B–8 TZ867 VMS Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . Read/Write Cartridge Compatibility with the TK86 Drive Tx867 Magazine Tape Subsystem Specifications . . . . . . . TK86 Tape Drive Specifications . . . . . . . . . . . . . . . . . . . . Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface Purpose This manual introduces the Tx867 series of magazine tape subsystems and describes operating procedures. Manual Structure Chapter 1, Overview, provides a basic product description of and specifications for the Tx867 series magazine tape subsystem. Chapter 2, Operation, describes the power-on process, the keys and indicators on the operator control panel (OCP), the operating modes of the Mode Select key, and the magazine and cartridge removal and replacement processes.
x Preface Intended Audience This manual is intended for the TF867 or TZ867 subsystem owner. This manual is for use by system managers, computer operators, or anyone who uses magazine tape subsystems. Prior knowledge of and experience with the VMS operating system and commands and tape devices are required. Conventions The term Tx867 refers to the TF867 and the TZ867 magazine tape subsystems.
1 Overview This chapter describes the Tx867 magazine tape subsystem and its functions. 1.1 General Description The Tx867 magazine tape subsystem (Figure 1–1) is an electromechanical device that can store approximately 42.0 GB of data. Using CompacTape III cartridges, the Tx867 subsystem can store up to 6.0 GB of data per cartridge.
1–2 Overview Figure 1–1 Front View of the Tx867 Magazine Tape Subsystem O PERAT O R CO NT RO L PANEL Eject Load/Unload MOD E S E LE C T K E Y BUTTON AND INDICATOR AREA Slot Select OCP DISABLED 0 AUTOMATIC MODE Power On OCP LABEL CURRENT SLOT INDICATORS 0-6 Write Protected Tape In Use 1 MANUAL MODE Use Cleaning Tape SERVICE MODE Magazine Fault Loader Fault 2 Eject 3 DSSI NODE ID LABEL (TF867 ONLY) Load/Unload Slot Select 0 Power On Write Protected Write Protect Load Fault 1 Tape In
Overview 1–3 1.
1–4 Overview The TZ867 is supported by various VMS versions with certain restrictions (Table 1–1): Table 1–1 TZ867 VMS Restrictions VMS Version Restrictions1 <5.3 X 5.3 1,2,4 5.4 1,2,4 5.4-1 1,2,4 5.4-2 1,2,3,4 5.4-3 1,2,3,4 5.5 1,2,4 5.5-1 1,2,4 1 KEY X = Not Supported 1 = VMS SHOW DEVICE command indicates "generic SCSI tape" and ERROR LOGGING indicates "GENERIC MK SUBSYSTEM". This has little impact on most applications. 2 = Standalone BACKUP not supported.
Overview 1–5 PERFORMANCE CONSIDERATION The VMS backup performance rate of your Tx867 subsystem can depend on your system processor. For example: • Connecting directly to an embedded bus adapter on such systems as the VAX 4000, VAX 6000, MicroVAX 3100-80, or InfoServer 150 (TZ867 only) provides optimum performance. • Connecting to a MicroVAX/VAXserver 3xxx (Q–bus) system with a KZQSA adapter can reduce the rate of performance but does not limit the high capacity of data storage that your Tx867 has.
1–6 Overview Figure 1–2 SF200 Storage Array SF 20 0 POSITION 5 0 1 2 3 0 4 POSITION 6 1 5 2 6 3 4 5 6 CXO-2461B SHR_X1106A_89
Overview 1–7 Figure 1–3 SF106/SZ106 Pedestal TX867 Subsystem Optional Storage Space SHR-X0175_91-DG
1–8 Overview 1.4 Operating Modes The Tx867 subsystem operates in the following modes: • OCP Disabled mode — Locks the subsystem into the enclosure and locks the receiver. The pushbuttons on the operator control panel (OCP)—Eject, Load/Unload, Slot Select—are disabled. This mode automatically loads the next tape cartridge into the drive after you issue the DISMOUNT command. • Automatic mode — Is the subsystem’s default or normal mode.
Overview 1–9 Figure 1–4 Tx867 Subsystem Mode Select Key Symbols MODE SEL E C T K E Y OCP DISABLED AUTOMATIC MODE SERVICE MODE MANUAL MODE SHR_X1025D_89
1–10 Overview 1.5 Hardware Components The Tx867 magazine tape subsystem consists of the following major hardware components (Figure 1–5): • Loader transfer assembly • Magazine • TK86 tape drive • Controller module • Rear chassis 1.5.1 Loader Transfer Assembly The Tx867 subsystem has a loader transfer assembly that contains the electromechanical assemblies required to store and move cartridges for use by the TK86 tape drive.
Overview 1–11 Figure 1–5 Tx867 Magazine Tape Subsystem Block Diagram DOCUMENTATION COUNTRY KITS HOST S/W (VMS) RACK MOUNT KIT MAGAZINE CONTROLLER MODULE TK86 REAR CHASSIS LOADER TRANSFER ASSEMBLY SHR_X1009C_89
1–12 Overview 1.5.2 Magazine The magazine is a removable storage rack that can store up to seven CompacTape III cartridges. The magazine consists of seven slots in which the cartridges are loaded; these slots are numbered from 0 to 6 on the front of the magazine. Use the OCP pushbuttons to open the receiver, insert or remove the magazine, load or unload cartridges, or select a slot. For more information, see Section 2.3. 1.5.
Overview 1–13 1.6 CompacTape III Cartridge The CompacTape III cartridge (Figure 1–6) is a 4 1=8-inch square, dark gray, plastic cartridge containing 1200 feet of 1=2-inch magnetic, metal particle (MP) tape. The cartridge has a write-protect switch to prevent accidental erasure of data. When the switch is moved to the left and the small orange rectangle is visible, data cannot be written to the tape.
1–14 Overview The TK86 tape drive writes 112 tracks (56 pairs) on the tape. The drive reads and writes data in a two-track parallel, serpentine fashion, traveling the entire length of tape on two tracks (at approximately 100 inches per second). The drive then steps the head and reverses tape direction, and continues to read/write on the next two tracks.
Overview 1–15 The factory setting is 2 for the FORCEDENSITY parameter. Under this setting, the TK86 tape drive will always reformat the tape to TK86 format on a WRITE-FROM-BOT. Users wanting to write in TK85 format must: • Load a tape written in TK85 format and do APPEND operations or • Change the value of FORCEDENSITY to 1 and then WRITE from BOT. CAUTION Be sure to change the value of FORCEDENSITY back to 2 after you have finished desired tape operations. 1.6.
1–16 Overview 1.7 Specifications Table 1–3 lists the specifications for the Tx867 magazine tape subsystem, and Table 1–4 lists those for the TK86 tape drive. Table 1–3 Tx867 Magazine Tape Subsystem Specifications Characteristic Specifications Height 26.47 cm (10.42 in) Width 22.20 cm (8.74 in) Length 64.77 cm (25.5 in) Weight 24.95 kg (55 lb) Noise level 62 dB Environmental temperature Operating 10°C to 40°C (50°F to 104°F) Nonoperating –40°C to 66°C (–40°F to 150.
Overview 1–17 Table 1–4 TK86 Tape Drive Specifications Characteristic Specification(s) Mode of operation Streaming Media 12.77 mm (1/2 in) unformatted magnetic tape Track density 224 tracks/in Bit density 42,500 bits/in Number of tracks 112 Maximum transfer rate (at tape) 800 KB/s, formatted Tape speed 100 in/s Track format Two-track parallel, serpentine recording Cartridge capacity Up to 6.
1–18 Overview 1.8 Supplies and Related Documents Use Table 1–5 to order additional cartridges or magazines. Contact your Digital sales representative, or call Digital’s DECdirect ordering service at 1–800–DIGITAL. Table 1–5 Supplies Order Number Description TK85–HC CleaningTape III Cartridge. One cartridge ships with the Tx867 subsystem. TK85–M Magazine. Ships with the Tx867 subsystem. TK85K–01 CompacTape III Cartridge. Seven cartridges ship with the Tx867 subsystem.
2 Operation This chapter explains Tx867 subsystem operation: • Power-on process • Mode Select key modes • Operator control panel (OCP) indicator functions • Slot Select, Load/Unload, and Eject button functions • Magazine cartridge insertion and removal 2.1 Power-On Process When the Tx867 subsystem powers on, all of the indicators on the operator control panel (OCP) light, within 15 seconds. The power-on self-test, or POST, is initializing the subsystem.
2–2 Operation 2.2 Mode Select Key The Mode Select key (Figure 2–1) can lock the loader transfer assembly into the enclosure, as well as lock the receiver closed. It has four modes: OCP Disabled, Automatic, Manual, and Service. The OCP Disabled, Automatic, and Manual modes are for operational use; the Service mode is for head cleaning and servicing procedures. 2.2.
Operation 2–3 Figure 2–1 Tx867 Operator Control Panel O PERAT O R CO NT RO L PANEL Eject Load/Unload MOD E S E LE C T K E Y BUTTON AND INDICATOR AREA Slot Select OCP DISABLED 0 AUTOMATIC MODE Power On OCP LABEL CURRENT SLOT INDICATORS 0-6 Write Protected Tape In Use 1 MANUAL MODE Use Cleaning Tape SERVICE MODE Magazine Fault Loader Fault 2 Eject 3 DSSI NODE ID LABEL (TF867 ONLY) Load/Unload Slot Select 0 Power On Write Protected Write Protect Load Fault 1 Tape In Use Use Cleaning T
2–4 Operation 2.2.2 Service Mode Service mode is for performing head cleaning by manually loading the CleaningTape III and for performing servicing procedures. See Chapter 5 for information on head cleaning. To unlock the Tx867 subsystem from its enclosure and remove it from its normal operating position, set the Mode Select key to Service mode. The receiver is unlocked and can be opened. 2.
Operation 2–5 Table 2–1 (Continued) Tx867 Operator Control Panel Button/Indicator Color Function Power On indicator Green Indicates the Tx867 magazine tape subsystem is in a known good power state (ac and dc voltages are within tolerance).
2–6 Operation Table 2–1 (Continued) Tx867 Operator Control Panel Button/Indicator Color Function Current slot indicators 0–6 Green Identifies the current slot (see Slot Select button). Each current slot indicator blinks when its corresponding cartridge moves to or from the drive. Also used with the Magazine Fault or Loader Fault indicator to show the type of fault (Sections 4.4.1 and Section 4.4.2). 2.
Operation 2–7 2.4.3 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. When you press the Load/Unload button, the Select Slot, Load/Unload, and Eject indicators turn off, and the cartridge unloads from the drive into the magazine. However, automatic operation now stops and the Select Slot operation does not increment.
2–8 Operation 2.5 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. 2.5.1 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 2–3). Each slot is numbered—to ensure that you are inserting the cartridge correctly in the front of the magazine.
Operation 2–9 Figure 2–2 Write-Protect Switch on a Cartridge ORANGE INDICATOR TM C p om ac Ta III pe WRITEPROTECT SWITCH WRITEENABLED WRITEPROTECTED SHR_X1020C_89
2–10 Operation Figure 2–3 Inserting a Cartridge into the Magazine BACK OF MAGAZINE TM m Co pa cT ap II eI 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 SLOT NUMBERS 0-6 FRONT OF MAGAZINE SHR_X1021_89
Operation 2–11 2.5.2 Removing a Cartridge from the Magazine To remove a cartridge from the magazine, press the cartridge (Figure 2–4) at the front of the magazine until you hear a click; then, release. The slot uses a spring-release action. When you press the cartridge in all the way, it pops out. NOTE Never apply labels to the top or bottom of tape cartridges. Doing so can cause cartridge jams in the Tx867 subsystem. Use the space on the front of the cartridge for labels.
2–12 Operation Figure 2–4 Removing a Cartridge from the Front of the Magazine BACK OF MAGAZINE 0 1 2 NOTE: Push tape in until a click is heard 3 4 5 6 1 TM Co mp ac Ta pe II 2 3 TM 0 Co mp ac Ta pe II 0 1 2 1 3 2 4 4 3 5 5 4 6 5 6 SLOT NUMBERS 0-6 FRONT OF MAGAZINE SHR_X1022_89
Operation 2–13 Figure 2–5 Receiver Opened FRONT BEZEL Ejec Loa Slot Pow Wri t d/U nloa Sele er O n te P ro Tap tect e In Use Use Cle anin Driv Loa d ct g Ta p e e Fa ult d Fa u lt SHR-X0046-90
3 TF867 Local Programs This chapter is for TF867 users only. It describes some of the local diagnostic programs and utilities that you can access with the TF867 magazine tape subsystem to test and verify that the subsystem is functioning correctly. The programs and utilities, also called task names, described in this chapter are: • DIRECT — Provides a directory of available local programs. • HISTRY — Displays information about the TF867 subsystem.
3–2 TF867 Local Programs 3.1 Accessing Local Programs Access local programs with the VMS command: $ SET HOST/DUP You need certain VMS privileges to use the SET HOST/DUP command. (See your system manager.) This command allows you to access the local programs that reside in read-only memory (ROM) on the TF867 subsystem. When you execute SET HOST/DUP, communications between the host system and the TF867 subsystem are through diagnostic utilities protocol (DUP).
TF867 Local Programs 3–3 3.1.1 Error Message after Executing SET HOST/DUP Command If you receive an error message when using the SET HOST/DUP command, you may need to load the FYDRIVER program. To load the FYDRIVER program: $ MCR SYSGEN (Accesses SYSGEN.) $ SYSGEN> LOAD FYDRIVER (Loads FYDRIVER, a prerequisite to using diagnostics.) $ SYSGEN> CON FYA0/NOADAP (Configures FYDRIVER.) $ SYSGEN> EXIT 3.
3–4 TF867 Local Programs 3.3 HISTRY Program The HISTRY program displays information about the history of the TF867 subsystem. An example of the HISTRY display follows: TF86 DSSI: T8BBBB /0 (DIPs) Controller: S#: EN03000193 HW: 000/PCB-rev:A000 Bt: 123/A435BAC1 (25-NOV-1991 16:51:54) Cd: V004/5150C0EA (1-SEP-1992 20:33:02) EE: 086.
TF867 Local Programs 3–5 3.4 PARAMS Program The PARAMS program displays or changes internal parameters for the TF867 magazine tape subsystem (Table 3–1). Parameters are preset during manufacturing; however, your system manager may need to change them with the PARAMS program to configure your system. Table 3–1 TF867 Subsystem Parameters Parameter Definition UNITNUM TMSCP unit number. SYSTEMID Controller module’s 48-bit system ID. NODENAME Node name for the TF867 subsystem.
3–6 TF867 Local Programs 3.4.1 Displaying, Setting, and Saving Parameters Use the SET HOST/DUP command to invoke the PARAMS program. The terminal displays the following prompt: PARAMS> Once you invoke the PARAMS program, all interaction is through commands and responses (Table 3–2). Table 3–2 TF867 PARAMS Commands Command Definition HELP Shows all PARAMS commands and their syntax. SHOW Displays subsystem parameters. SET Sets a parameter to a value.
TF867 Local Programs 3–7 3.4.3 SHOW Command Use the SHOW command to display TF867 subsystem parameters. The command syntax for displaying specific parameters is: PARAMS> SHOW parameter See Table 3–1 for the parameters you can display. You can add qualifiers to the SHOW command to display classes of parameter information: • SHOW /ALL • SHOW /DIF • SHOW /DSSI • SHOW /DUP • SHOW /SYSTEM • SHOW /TDS • SHOW /TMSCP NOTE Be sure to leave a space between the SHOW command and the /qualifier.
3–8 TF867 Local Programs 3.4.4 SET Command Use the SET command to set, or change, internal TF867 subsystem parameters. The syntax for the SET command is: PARAMS> SET parameter value In the previous example, parameter is the name of the parameter to be set, and value is the value you want to assign to the parameter. If abbreviated, the first matching parameter is used without regard to uniqueness. See Table 3–1 for a summary of TF867 subsystem parameters available when using the SET command.
TF867 Local Programs 3–9 3.4.6 WRITE Command Use the WRITE command to save, in nonvolatile memory, the changes you made using PARAMS and its SET command. The WRITE command is similar to the VMS SYSGEN WRITE command. Syntax is as follows (no parameters are available): PARAMS> WRITE The program responds: PARAMS> SET NODENAME TAPE1 PARAMS> SET UNITNUM 18 PARAMS> WRITE Changes require controller initialization, ok? [Y/(N)] Y This sets the TF867 subsystem’s node name to TAPE1, and the TMSCP unit number to 18.
3–10 TF867 Local Programs 3.5 DRVEXR Program The DRVEXR program exercises the tape drive. It is an intensive data transfer test and indicates the overall integrity of the drive. An example of a DRVEXR display follows: Write/read anywhere on medium? [1=Yes/(0=No)] 1 User Data will be corrupted. Proceed? [1=Yes/(0=No)] 1 Test Time in Minutes [(10) - 100] 10 Minutes to Complete: 10 Data Compares enabled. DIAGNOSTIC TAG parameters used.
TF867 Local Programs 3–11 Long Gap Found Test Passed 3.7 LDRTST Program The LDRTST program sends commands to the loader electronics module, which exercises the mechanics of the loader transfer assembly. In addition, this test checks the status of each cartridge in the magazine.
4 Error Conditions and Problem Resolutions This chapter describes the conditions that must be present to ensure that the OCP pushbuttons (Slot Select, Load/Unload, and Eject) operate effectively. This chapter includes instructions on resolving BACKUP operation failures, descriptions of magazine and loader faults and how to clear them, and what to check in the event of a power problem. 4.
4–2 Error Conditions and Problem Resolutions See Section 2.4 for more information on the functions of the Tx867 OCP buttons. Table 4–1 Tx867 OCP Button Conditions If you want to. . . First make sure that the. . . Then you can press this button. . .
Error Conditions and Problem Resolutions 4–3 4.2 Backup Operation Failure Some manual operations, if not performed correctly, may cause backup operations to fail during BACKUP: • Loading write-protected CompacTape III cartridges when executing write operations • Selecting the incorrect cartridge slot from which to initialize operations 4.3 Avoiding Basic Problems Follow these guidelines when operating the Tx867 subsystem to avoid basic problems: • Use CompacTape III cartridges.
4–4 Error Conditions and Problem Resolutions Figure 4–1 Opening the Cartridge Door to Check the Tape Leader CARTRIDGE LEADER DOOR LOCK (RELEASE BY LIFTING DOOR LOCK WITH THUMB) SHR-0002-86 SHR_X1027_89_CPG 4.4 Error Conditions Error indications fall into two main categories: • Magazine Fault — In most cases, this fault is an operatorcorrectable condition, and is indicated by the Magazine Fault indicator being on. If you cannot resolve the fault, call your Digital Services representative.
Error Conditions and Problem Resolutions 4–5 4.4.1 Magazine Fault Description A magazine fault indicates an inconsistency between what the loader transfer assembly has done with a cartridge and the actual state detected by the subsystem.
4–6 Error Conditions and Problem Resolutions 4.4.2 Loader Fault Description A loader fault indicates that the Tx867 subsystem has detected a fatal error in either the loader transfer assembly or the tape drive. In the case of some loader transfer assembly errors, the subsystem retries the error three times before indicating failure. All loader faults generate an error log as well as light the Loader Fault indicator and an associated subcode.
5 Head Cleaning The Tx867 magazine tape subsystem uses the CleaningTape III cartridge (Figure 5–1) for cleaning the read/write head in the tape drive. The CleaningTape III cartridge is a yellow plastic cartridge containing 1200 feet of 1/2-inch, magnetic particle (MP) cleaning tape. You can use the CleaningTape III cartridge approximately 20 times before it expires.
5–2 Head Cleaning Figure 5–1 CleaningTape III Cartridge TM Cl e in an gT a III pe SHR_X1020E_89
Head Cleaning 5–3 You can use two procedures to clean the read/write head: 1. Access the tape drive and load the CleaningTape III cartridge directly into the drive (Section 5.1). 2. Insert the CleaningTape III cartridge into the magazine, where it then loads into the drive (Section 5.2). NOTES Perform the head cleaning procedure only when the orange Use Cleaning Tape (Figures 5–2 and 5–3) indicator is on. If the Loader Fault indicator is on, clear the fault before proceding with head cleaning.
5–4 Head Cleaning Figure 5–2 Drive Front Panel ORANGE ORANGE YELLOW GREEN t ad gh Lo Li o T t ai his t W n pe O dle pe a an t T H r se his t In se lo e C dl an H R d oa n nl to U ut t o B gh T i ss L re P t is ai th W n pe pe O dle Ta an ve o em H 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 Text is 8pt on 8pt Rt,z,-45 TK85 is TI med (ti) 12pt U nl oa d CARTRIDGE INSERT/RELEASE HANDLE SHR-X0056H-91
Head Cleaning 5–5 Figure 5–3 Tx867 Operator Control Panel O PERAT O R CO NT RO L PANEL Eject Load/Unload MOD E S E LE C T K E Y BUTTON AND INDICATOR AREA Slot Select OCP DISABLED 0 AUTOMATIC MODE Power On OCP LABEL CURRENT SLOT INDICATORS 0-6 Write Protected Tape In Use 1 MANUAL MODE Use Cleaning Tape SERVICE MODE Magazine Fault Loader Fault 2 Eject 3 DSSI NODE ID LABEL (TF867 ONLY) Load/Unload Slot Select 0 Power On Write Protected Write Protect Load Fault 1 Tape In Use Use Cleani
5–6 Head Cleaning 5.1 Accessing the Tape Drive Unless otherwise instructed by a Digital Services representative, open the Tx867 subsystem to access the tape drive for head cleaning only. To access the tape drive: 1. Be sure that all Tx867 subsystem operations are stopped. 2. Ensure that the Eject indicator is on (Figure 5–3). 3. Set the Mode Select key to Service mode (Figure 5–3). 4. Press the Eject button and remove the magazine, if present. 5.
Head Cleaning 5–7 Figure 5–4 Sliding the Tx867 Subsystem Toward You SF 20 0 FIRST MECHANICAL STOP 0 1 2 3 0 4 1 5 2 6 3 4 5 6 CXO-2461B SHR_X1106B_89
5–8 Head Cleaning Figure 5–5 Loader Open Latch LOADER OPEN LATCH SHR-0007-90 SHR-X0140-90-CPG
Head Cleaning 5–9 5.1.1 Loading the CleaningTape III Cartridge into the Drive Be sure to use a CleaningTape III cartridge. Instructions for loading the CleaningTape III cartridge follow: 1. Pull the handle to the open position when the green indicator steadily lights (Figure 5–6). 2. Load the cartridge. 3. Push the handle closed. The green indicator turns off and the yellow Tape In Use indicator begins to flash, indicating the tape is loading.
5–10 Head Cleaning Figure 5–6 Loading the Cartridge 1 2 3 4 SHR-0256-87 SHR_X1093_89_CPG
Head Cleaning 5–11 5.2 Inserting the CleaningTape III Cartridge into the Magazine CAUTION If you choose to use this cleaning procedure, you must return the CompacTape III cartridges to their original slots, and remove the cleaning cartridge from the magazine after the cleaning procedure is done. To clean the read/write head by inserting the CleaningTape III into the magazine rather than the drive, use the following steps (Figure 5–3): 1.
A VMS Operating System Commands The Tx867 magazine tape subsystem uses most of the standard magnetic tape commands that can be invoked under VMS operating system version 5.4-2 or later. This appendix is a reference only; it does not include all the details that may be involved in using VMS commands.
A–2 VMS Operating System Commands A.1.1 ALLOCATE Command The ALLOCATE command provides exclusive access to a device and optionally establishes a logical name for that device. Once you have allocated a device, other users cannot access that device until you explicitly DEALLOCATE it, or until you log out.
VMS Operating System Commands A–3 NOTE By selecting the /NOCRC and /GROUP=0 qualifiers and a large block size with the /BLOCK qualifier (65534 is the largest possible block size), you can achieve better performance from the Tx867 subsystem. The previous command line excludes the use of the host-available CRC error detection/correction capability, and depends on the embedded error checking and correction capabilities of the Tx867 subsystem.
A–4 VMS Operating System Commands NOTE For improved performance, you can also use the following command: $ MOUNT/CACHE=TAPE_DATA For more information, see the VAX/VMS Mount Utility Reference Manual (AA–Z424A–TE). A.1.5 COPY Command Use the COPY command, with the Tx867 subsystem, to copy files from cassette tape. In the following example, the MOUNT command requests that the volume labeled GMB001 be mounted on the tape drive at MIA0 and assigns the logical name TAPE1.
VMS Operating System Commands A–5 A.1.7 INITIALIZE Command CAUTION Be sure that you are using a scratch tape before initializing; otherwise, any existing data on the tape will be destroyed. Use the INITIALIZE command to specify the device name, and write a volume name to the magnetic tape volume loaded into the TF86 subsystem. Note that the tape must be write-enabled for the initializing operation.
B Using the TZ867 Subsystem with the ULTRIX Operating System This appendix is intended for those using the TZ867 tape subsystem with the ULTRIX operating system. This section includes: • Adding the TZ867 subsystem to your ULTRIX system • Tips on getting maximum capacity and performance • Using the TZ867 subsystem for unattended backups • Using various ULTRIX commands to save information on the TZ867 subsystem B.
B–2 Using the TZ867 Subsystem with the ULTRIX Operating System B.1.1 Connecting the TZ867 to ULTRIX To connect the TZ867 subsystem to the ULTRIX system: 1. Physically connect the TZ867 cable(s) to the ULTRIX system. 2. Ensure an entry for the TZ867 subsystem is specified in the ULTRIX system configuration file. If you have to modify your configuration file by adding an entry, then you must build a new kernel and reboot the system. This is explained in Section B.1.3 and Section B.1.4. 3.
Using the TZ867 Subsystem with the ULTRIX Operating System B–3 Table B–1 Determining the Tape Name SCSI Target ID Bus 0 Bus 1 0 tz0 tz8 1 tz1 tz9 2 tz2 tz10 3 tz3 tz11 4 tz4 tz12 5 tz5 tz13 6 tz6 tz14 7 tz7 tz15 2. Determine the name of the controller to which the TZ867 subsystem is connected. 3. Include the word tape, name, controller, and the device# in the entry. B.1.
B–4 Using the TZ867 Subsystem with the ULTRIX Operating System leads to some or all of the following logical device names: /dev/nrmt0l /dev/nrmt0h /dev/rmt0l /dev/rmt0h /dev/rmt0m /dev/nrmt0m /dev/rmt0a /dev/nrmt0a • mt (in the middle of the logical name) means magnetic tape device. • nr means no rewind when the utility completes. Use the no rewind option when more than one operation is being performed to the same tape. • r means rewind when the utility completes. • 0 is the logical unit number.
Using the TZ867 Subsystem with the ULTRIX Operating System B–5 B.2.1 Getting Maximum Storage Capacity To get maximum storage capacity: Use block sizes that are integral multiples of 4,096 bytes, such as 4k, 8k, 12k, 16k, and so forth. It is recommended you use larger block sizes of 16k, 24k, or 32k, which: • Allow more efficient data processing by the host and on the SCSI bus • Maximize capacity Some utilities and commands default to using block sizes that cause lower capacity and I/O rates.
B–6 Using the TZ867 Subsystem with the ULTRIX Operating System • Processing speed and host CPU loads • Memory size B.3 Doing Unattended Backups This section explains how to use the TZ867 subsystem as an unattended backup device. Unattended backups require some extra planning, since the dump and restore utilities do not support automatic cycling of tape cartridges at this time on the TZ867 subsystem.
Using the TZ867 Subsystem with the ULTRIX Operating System B–7 The following is an example of a script: # #************************************************************************ # # Nightly backup script for system DEVSYS # # Note: Setup loader to have cartridge #0 loaded before starting # #************************************************************************ # # Cartridge 0: backup user directories # mt -f /dev/rmt2h rewind tar -b 32k -cf /dev/rmt2h /usr/users/gimli tar -b 32k -rf /dev/nrmt2h /usr/us
B–8 Using the TZ867 Subsystem with the ULTRIX Operating System B.4 Selecting Density As explained in Chapter 1, density selection for write operations is not supported by ULTRIX at the time of this printing. However, if the CAM software is installed, you can: • Modify the /sys/data/cam_data.c file to recognize the TZ867 • Assign the write densities selected by the host The TK85 density is SEQ_42500_BPI (17h) and the TK86 density is 18h (no symbol is defined for this new media format).
Using the TZ867 Subsystem with the ULTRIX Operating System B–9 B.5 Using ULTRIX Tape Commands This section describes ULTRIX commands used to operate the TZ867 subsystem. The TZ867 subsystem uses standard magnetic tape commands to do backup and restore operations. The tar and dump/restore commands are used most often. B.5.1 Using the tar Command The tar command, which operates on files and directories, writes and reads tapes.
B–10 Using the TZ867 Subsystem with the ULTRIX Operating System B.5.2 Using the dump Command To use the dump command, you need system privileges. This command lets you write an entire file system to tape. Ensure that the current directory is not within the file system being backed up, except when backing up from the root directory. The dump command uses 10k byte block sizes. A 16% reduction in capacity and I/O rates can result from using these block sizes.
Using the TZ867 Subsystem with the ULTRIX Operating System B–11 Table B–4 lists the options you can use with the restore command. Table B–4 Common restore Options Option f r i v x Meaning Tape device Read everything from tape Interactive Verbose Extract The following example shows a command line with the restore command: $ restore -xvf filename B.5.4 Using the dd Command Use the dd command to perform a device-to-device copy.
B–12 Using the TZ867 Subsystem with the ULTRIX Operating System The following examples show command lines with the dd command to: • Write to tape with the block device file: $ dd if=/dev/rz1a of=/dev/rmt1h bs=32768 • Write to tape with the image device file: $ dd if=/dev/rrz1a of=/dev/rmt1h bs=32768 • Read a tape: $ dd if=/dev/rmt1h of=/dev/rz1a ibs=32768 B.5.5 Using the ltf Command Use the ltf command to write and read ANSI tapes.
Using the TZ867 Subsystem with the ULTRIX Operating System B–13 B.5.6 Using the mt Command The mt (magnetic tape) command allows you to give certain commands to the tape drive. Table B–7 lists the options you can use with the mt command.
B–14 Using the TZ867 Subsystem with the ULTRIX Operating System Table B–8 Common cpio Options Option c d i o t v Meaning Write or read header information in ASCII character form Create directories as needed Copy in Copy out Table of contents of tape Verbose The following examples show command lines with the cpio command to: • Write to tape all files and subdirectories from your current directory: $ find .
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Index A Adding the TZ867 ULTRIX system, B–1 ALLOCATE command, A–2 Automatic mode, 2–2 B BACKUP command, A–2 Automatic mode, 2–2 Backup failures, 4–3 Backup unattended ULTRIX, B–6 BOT (beginning of tape), A–4 Button operation conditions for, 4–2 C Cartridge checking the tape leader, 4–3 inserting into magazine, 2–8 loading, 2–6 unloading, 2–7 write-protect switch, 2–8 Cartridge compatibility read/write ability, 1–14 Cleaning procedure for read/write head, 5–9 CleaningTape III cartridge, 5–1 inserting into
2 Index Drive fault description, 4–6 DRVEXR program, 3–10 DRVTST utility, 3–10 DSSI node ID label, 1–5 E Eject button, 2–6 cartridge in drive, 2–7 no cartridge in drive, 2–7 unload function, 2–4 use of, 4–2 Eject indicator, 4–2 Entry, creating an ULTRIX, B–2 Error conditions, 4–4 Error message SET HOST/DUP command, 3–3 EXIT command, 3–9 F FYDRIVER program, 3–3 H Head cleaning procedure, 5–1 securing the subsystem, 5–9 HELP command, 3–6 HISTRY program, 3–4 I INITIALIZE command, A–5 L LDRTST program, 3–
Index 3 P Parameters, TF867 subsystem displaying, setting, saving, 3–6 list of, 3–5 PARAMS program, 3–5 EXIT command, 3–9 HELP command, 3–6 SET command, 3–8 SHOW /ALL command, 3–7 WRITE command, 3–9 POST, 2–1 Power problems, 4–6 Power-on, 2–1 Power-on self-test status of OCP indicators, 2–1 Problem resolutions, 4–1 conditions to check, 4–2, 4–5, 4–6 reset, 4–6 R Rebooting system ULTRIX, B–3 Receiver, 2–11 Reset, 4–6 Load/Unload button, 2–4 S Scripts, unattended backup ULTRIX, B–6 Securing the Tx867 subsy
4 Index W WRITE command, 3–9 Write-protect switch, 2–8, A–3
