SentinelRAID 170 320MB/sec SCSI-to-SCSI RAID Controller Installation and Hardware Reference Manual Version 1.
Contact Information Asia Pacific (International Headquarters) Americas Infortrend Technology, Inc. 8F, No. 102 Chung-Shan Rd., Sec. 3 Chung-Ho City, Taipei Hsien, Taiwan Tel: +886-2-2226-0126 Fax: +886-2-2226-0020 sales@infortrend.com.tw support@infortrend.com.tw http://www.infortrend.com.tw Infortrend Corporation 3150 Coronado Dr., Unit C Santa Clara, CA 95054 USA Tel: +1-408-988-5088 Fax: +1-408-988-6288 sales@infortrend.com support@infortrend.com www.infortrend.
Copyright 2004 This Edition First Published 2004 All rights reserved. This publication may not be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written consent of Infortrend Technology, Inc.
Warnings and Certifications FCC (applies in the U.S. and Canada) This device complies with Part 15 of FCC Rules. Operation of this device is subject to the following two conditions: 1) this device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation. Warning: Use only shielded cables to connect I/O devices to this equipment.
Table of Contents CHAPTER 1: INTRODUCTION ............................................................................................................ 1-1 1.1. PRODUCT OVERVIEW ................................................................................................................... 1-1 1.1.1 Product Introduction ........................................................................................................... 1-1 1.1.2 Enclosure.............................................................
CHAPTER 3: CONTROLLER MONITORING ................................................................................... 3-1 3.1. CONTROLLER MONITORING OVERVIEW ....................................................................................... 3-1 3.2. STATUS-INDICATING LEDS .......................................................................................................... 3-2 3.3. AUDIBLE ALARM .........................................................................................................
A.4.1 A.4.2 RAID Levels Supported .......................................................................................................A-3 Controller Chassis...............................................................................................................A-3 APPENDIX B: HARDWARE SPECIFICATIONS ...............................................................................B-1 B.1. CONFIGURATION ..................................................................................................
Safety Precautions Precautions and Instructions • Prior to powering on the controller, ensure that the correct power range is being used. • Ensure there is a sufficient cooling airflow to maintain the temperature of the controller board. If the controller board overheats it may be permanently damaged. • Be sure that the rack cabinet into which the controller will be installed provides sufficient ventilation channels and airflow circulation around the controller.
Who should read this manual? This manual assumes that its readers are experienced with computer hardware installation and are familiar with RAID controllers. Related Documentation • Generic Operation Manual • RAIDWatch User’s Manual These two documents can be found in the CD included with your subsystem package.
Software and Firmware Updates Please contact your system vendor or visit Infortrend’s FTP site (ftp.infortrend.com.tw) for the latest software or firmware updates. NOTE that the firmware version installed on your system should provide the complete functionality listed in the specification sheet/user’s manual. We provide special revisions for various application purposes. Therefore, DO NOT upgrade your firmware unless you fully understand what a firmware revision will do.
Chapter 1: Introduction Chapter 1 Introduction 1.1. Product Overview 1.1.1 Product Introduction This hardware manual briefly introduces the SentinelRAID 170 (SR 170) 320MB/second SCSI (SCSI-320) -to-SCSI RAID controller shown in Figure 1-1. Figure 1-1: SentinelRAID SCSI-to-SCSI RAID Controller The SR 170 controller is designed to meet the high availability, high performance, and extreme fault tolerant demands placed on RAID controllers operating in today’s most extreme storage environments.
SentinelRAID 170 Installation and Hardware Reference Manual connects to a PC hyper-terminal that is used to configure the controller and the subsystem in which it is embedded. The LAN port enables the controller to connect to the webbased RAIDWatch™ management program that enables you to manage your controller from anywhere in the world. Two power supply unit (PSU) connectors ensure the controller can be connected to dual-redundant power supplies.
Chapter 1: Introduction Figure 1-2: SR Enclosure Canister Mounting Holes 1.2. SR Components 1.2.1 LCD Panel Figure 1-3: LCD Panel The LCD panel shown in Figure 1-3 consists of a 16x2 character LCD screen with two navigation buttons (labeled as W V in Figure 1-3), three status-indicating LEDs (POWER, BUSY and ATTEN), an enter button (labeled ENT) and an escape button (labeled ESC). The LCD front panel provides full access to all RAID configurations and monitoring.
SentinelRAID 170 Installation and Hardware Reference Manual upgrade sockets allow for the installation of a daughter board that facilitates the addition of four SCSI-320 I/O channels. All I/O channels (both base channels and expansion channels) can be configured as either host or drive channels. The controller board also comes with a 68-pin SDRAM DIMM socket that facilitates the installation of a 64MB to 1GB SDRAM DIMM module.
Chapter 1: Introduction Figure1-4: Controller Board (Front) 1.2.3 Interfaces The external interfaces (see Figure1-5) are all located at the back of the controller board and are easily accessible at the rear of the controller enclosure. These interfaces include the SCSI-320 I/O channel connectors, power cord sockets, RS-232C serial port connector, I2C connector and battery connector. The backplane interfaces are fully described in Table 1-2. Their locations are shown in Figure1-5.
SentinelRAID 170 Installation and Hardware Reference Manual Connector Type Label Description SCSI-320 Connectors CH0, CH1, CH2 and CH3 68-pin VHDCI connectors that facilitate the connection of the SCSI-320 I/O channels to external devices. I C Connector J3 I C supports the enclosure devices. Battery Connector J1 Allows an optional battery backup unit (BBU) to be connected to the system. COM1 and COM2 Connector JP16 and JP17 These connectors are used for serial port communications.
Chapter 1: Introduction 1.3. SR Accessory Items The following items are not installed on the controller but come in the accessory box and can be used with the SR controller. 1.3.1 Serial Cable The IFT-9512 RS-232C serial cable allows the serial RS-232C serial communications connector at the rear of the board (J2) to be connected to a PC hyper-terminal, which enables a RAID array manager to easily manage and configure the storage array to which the controller is connected. 1.3.
SentinelRAID 170 Installation and Hardware Reference Manual 1.4.2 SCSI Cables SCSI cables are required to connect the 68-pin connectors on the backplane to the SCSI320 drives and SCSI-320 hosts. When purchasing SCSI-320 cables, select cables of the highest quality that are produced by a reputable manufacturer. To ensure optimum SR controller performance it is necessary to use proper, high quality, durable SCSI-320 cables. Failure to do so will result in downgraded performance.
Chapter 1: Introduction Figure 1-6: IFT-9010D BBU Module Figure 1-7: IFT-9070D Battery Charger Board 1.5.2 Daughter Board Expansion The installation of an optional daughter board makes four additional SCSI-320 I/O channels available. 1.6. Environmental Requirements When installing and running an SR controller, the following environmental considerations must be taken into account. 1.6.
SentinelRAID 170 Installation and Hardware Reference Manual 1.6.2 Cooling Requirements Proper SR controller cooling is required to ensure that the temperature of the critical controller board components does not exceed the operational temperature range. The main components on the controller board that can overheat are: ASIC 133 CPU SCSI Chip(s) The temperature of these items cannot exceed 80°C. Of the three items listed, the CPU will heat up the most.
Chapter 1: Introduction 1.7.4 Audible Alarms The SR controllers come with audible alarms that will be triggered when certain active components fail or when certain thresholds are exceeded. If you hear an audible alarm being emitted from the SR controller it is imperative that you determine and rectify the problem immediately. WARNING: Failing to respond when an audible alarm is heard can lead to permanent damage of the SR controller. If an audible alarm is heard, rectify the problem as soon as possible.
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Chapter 2: Installation Chapter 2 Installation 2.1. Installation Overview CAUTION: Please note that the installation instructions described in this manual should be carefully followed. Failure do to so may result in damage to the system. 2.2. Installation Prerequisites 1. Static- free installation environment: The SR controller must be installed in a static free environment to minimize the possibility of electrostatic discharge (ESD) damage. (See Section 2.3.2). 2.
SentinelRAID 170 Installation and Hardware Reference Manual ♦ Working surface: Provide a soft, clean surface on which to place your controller before working on it. Servicing on a rough surface may damage or scratch the enclosure. 2.3.2 Static-free Installation Static electricity can damage the electronic components of the system. Most of the controllers that are returned for repair are the result of improper installation and ESD damage.
Chapter 2: Installation 2.4.3 General Installation Procedure If the steps listed below are followed, the installation of the SR controller should be smooth and efficient. Detailed, illustrated instructions for each step are given in the following sections. CAUTION: To ensure that the system is correctly installed, please follow the steps outlined below. If these steps are not followed, the hardware may accidentally be installed incorrectly. Step 1. Unpack.
SentinelRAID 170 Installation and Hardware Reference Manual 2.6. Accessing the Controller Board 2.6.1 Overview WARNING: The controller board is a very sensitive component and must therefore be handled with extreme care. Before accessing the controller board, please ensure that all anti-static precautions previously stipulated are strictly adhered to. The controller board is located in the controller box and should only be removed from the controller box if the controller board fails.
Chapter 2: Installation 2.7. Memory Module Installation The SR controller comes without a DIMM memory module. It is therefore necessary for a separately purchased DIMM module to be installed. 2.7.1 Selecting the DIMMs When purchasing the DIMM modules, the following factors must be considered: ♦ Supported SDRAM DIMM modules: The SR controllers support SDRAM DIMMs with memory capacities between 128MB and 1GB with ECC support.
SentinelRAID 170 Installation and Hardware Reference Manual Figure 2-2: Install the DIMM Module Step 3. Replace the chassis top cover. Once the DIMM module has been installed and if no other items (e.g., BBU module or expansion daughter board) are being installed on the controller board, reinstalled the chassis top cover. For further instructions on how to reinstall the chassis top cover, please refer to Section 2.6.2. 2.8. Battery Backup Unit (BBU) Installation 2.8.
Chapter 2: Installation ♦ During normal use, an empty cell pack takes about 20 hours to recharge. ♦ Disconnect the BBU if there is a long storage period before deployment. Extreme storage conditions should be avoided (i.e., temperatures <-20ºC or >65ºC, relative humidity >65%±10%). 2.8.2 BBU Installation Procedure Step 1. Remove the chassis top cover. Before installing the BBU module, remove the chassis top cover. For further instructions on how to remove the top cover, please refer to Section 2.6.2.
SentinelRAID 170 Installation and Hardware Reference Manual Figure 2-4: Install the Battery Charger Board Step 4. Connect the BBU cable. The BBU cable can be connected to a white, 4pin header on either the BBU charger board (see Figure 2-5) or at the back of the controller board (labeled J4) (see Figure 2-6). If the BBU cable is going to be connected to the charger board, the connections should be made now.
Chapter 2: Installation Figure 2-6: Connect the BBU to the Connector at the Back of the Controller Board Step 5. Replace the chassis top cover. Once the battery charger board has been installed on the controller board, the chassis top cover must be reinstalled. For further instructions on how to reinstall the chassis top cover, please refer to Section 2.6.2. Step 6. Attach the BBU to the enclosure.
SentinelRAID 170 Installation and Hardware Reference Manual Figure 2-7: Install the Daughter Board Step 3. Insert the retention screws. Once the daughter board has been mounted on the board-to-board connectors, insert the retention screws that came with the daughter board. (See Figure 2-8) Figure 2-8: Install the Daughter Board Retention Screws Step 4. 2-10 Replace the chassis top cover. Once the daughter board has been installed on the controller board, reinstall the chassis top cover.
Chapter 3: Controller Monitoring Chapter 3 Controller Monitoring 3.1. Controller Monitoring Overview The SR controller is equipped with a variety of self-monitoring features that help keep controller managers informed of the controller’s operational status. These monitoring features provide vital feedback that helps you maintain the operational integrity of your controller.
SentinelRAID 170 Installation and Hardware Reference Manual Controller monitoring is a necessary part of controller management. If failure events or other disruptive events are detected and reported, controller managers must take the appropriate action to rectify the problem. Failure to act in a properly specified manner to a system event (like overheating) can cause severe and permanent damage to the controller. 3.2.
Chapter 3: Controller Monitoring 3.3. Audible Alarm Different controller environmental and operational parameters (i.e., temperature, etc.) have been assigned a range of values within which they can fluctuate. If either the upper or lower thresholds are exceeded, an audible alarm will automatically be triggered. The alarm will also be triggered when an active component of the SR 170 controller fails.
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Chapter 4: Controller Connections and Operation Chapter 4 Controller Connections and Operation 4.1. SentinelRAID Connection 4.1.1 I/O Channel Configuration All of the I/O channels can be configured as either host channels or drive channels. Note that at least one I/O channel on the SR 170 controller must be configured as a host channel and the other channels can all be configured as drive channels. 4.1.
SentinelRAID 170 Installation and Hardware Reference Manual 4.1.4 Drive Connection Each drive channel can be connected to up to fifteen SCSI-320 hard drives. The maximum number of drives that can be connected to each controller is shown in Table 4-2 below: Model Host Channels SR 170 SR 170 9284U4 + IFT- Drive Channels Maximum Number of Drives 1 3 45 1 7 105 Table 4-2: Maximum Number of Drives 4.1.
Chapter 4: Controller Connections and Operation Figure 4-1: Single Host Connection SR 170 Topologies 4-3
SentinelRAID 170 Installation and Hardware Reference Manual 4.2.2 Dual Host Connection In Figure 4-2 two channels (CH0 and CH1) are configured as host channels and two channels (CH2 and CH3) are configured as drive channels. The firmware (FW) can be used to create LDs. These LDs must in turn be mapped to the host channels.
Chapter 4: Controller Connections and Operation 4.2.3 Expansion The installation of an optional daughter board can expand the number of available SCSI320 I/O channels by four. With the addition of the daughter board, the SR 170 will then have eight SCSI-320 channels available. These expansion channels are connected in the same way as described above. They can all be configured as either host or drive channels. 4.3.
SentinelRAID 170 Installation and Hardware Reference Manual NOTE: It is recommended to use the embedded terminators on host or drive channels by setting DIP switches, and then installing an external terminator on the other end of your SCSI cable. If a drive fails, data traffic will remain unaffected. Please note of the following: 1. Refer to the installation documents that came with your drives for information on jumper settings. 2. Set a unique SCSI ID address on each drive.
Chapter 4: Controller Connections and Operation Host Computer Connect to the RS-232C port of the host computer IFT-9512 cable 1 Controller IFT-9011 Null Modem RS-232 Cable Customer Provided 2 (Red stripe) 1 IFT-9512 cable 2 Du 1 6 2 7 3 8 49 5 1 6 2 7 3 8 49 5 al CO M Po COM 1 COM 2 rt Figure 4-5: RS-232C Connection Two SCSI ports on the six channel models (ES U16UG4010-62-0030 and ES U16UG4010-65-0030) can be used for capacity expansion to cascade a RAID system with a JBOD.
SentinelRAID 170 Installation and Hardware Reference Manual Ambient temperature: All the controller components have been acclimated to the surrounding temperature. 4.5.2 Power On Sequence When powering on the SR 170 controller, please follow these steps. 1. Power on the hard drives The SCSI-320 hard drives that have been connected to the SR controller should be powered up first. For the hard drive power on procedure, please refer to the documentation that came with the hard drives. 2.
Chapter 4: Controller Connections and Operation SR 170 v3.31F Modem Not Config This screen appears after the initialization process. It clearly shows the model name. SR 170 v3.31F 256MB RAM, Wait… SR 170 v3.31F No Host LUN System is ready. You can now start to configure the controller. 4.6.
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Chapter 5: Controller Maintenance Chapter 5 Controller Maintenance 5.1. Controller Maintenance Overview 5.1.1 About Controller Maintenance Constant monitoring and maintenance of your SR 170 controller will minimize downtime and preserve the working integrity of the controller for a longer period of time. If any of the controller components fail, they must be replaced as soon as possible. 5.1.2 User Serviceable Components Most of the controller components are user serviceable, i.e., replaceable.
SentinelRAID Installation and Hardware Reference Manual ♦ When replacing any of the controller components, it is necessary to access the controller board in controller canister. It is recommended that all power to the controller canister is turned off when maintenance procedures are being carried out. ♦ If the DIMM module, controller board or daughter board fail, the maintenance operations must be completed as soon as possible.
Chapter 5: Controller Maintenance Step 4. Remove the optional BBU charger board. The BBU charger board obstructs the DIMM module and must therefore be removed. See Section 5.3.3 below. Step 5. Insert the new DIMM module. To install the replacement DIMM module, align it with the DIMM slot. Next, gently push the new module into the DIMM socket. The white clips on either side of the DIMM socket will automatically close and lock the new DIMM module into place.
SentinelRAID Installation and Hardware Reference Manual Step 7. Reinstall the optional BBU charger board. Once the new DIMM module is installed, if an optional BBU charger board was previously removed it can now be reinstalled onto the controller board. See Section 5.3.3 below. Step 8. Reinstall the optional daughter board. Once the optional BBU charger board has been reinstalled, if an optional daughter board was previously installed on the controller board, it too can be reinstalled. See Section 5.4.
Chapter 5: Controller Maintenance Figure 5-3: Disconnect the BBU Connector from the Connector at the Back of the Controller Board. 5.3.2.2 Case 2: BBU Battery Pack Connected to the Charger Board Connector on the Controller Board If the BBU battery pack is attached to the connector on the BBU charger board, please follow these instructions: Step 1. Access the controller module. The BBU charger board is located on the controller board.
SentinelRAID Installation and Hardware Reference Manual Step 4. Replace the chassis top cover. Once the new BBU battery pack has been connected to the BBU charger board, the chassis top cover must be reinstalled. For further instructions on how to reinstall the chassis top cover, please refer to Section 2.6.2. 5.3.3 BBU Charger Board Replacement To replace the BBU charger board, please follow these instructions: Step 1. Access the controller module.
Chapter 5: Controller Maintenance the chassis. The complete removal procedure is described in Chapter 2, Section 2.6.2. Step 2. Remove the retention screws. The daughter board is secured to the controller board with three retention screws that pass through spacers mounted on the controller board. Remove these three retention screws. (See Figure 5-5) Figure 5-5: Remove the Daughter Board Retention Screws Step 3. Remove the daughter board.
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Appendix A: SentinelRAID Features Appendix A SentinelRAID Features A.1. Overview The SR controller comes with many different features. Some of these features enhance the performance of the controller or add configuration flexibility while other features simplify the installation, maintenance procedures of the controller. This section highlights some of the features of the SR controller. A.2. Controller Features A.2.
SentinelRAID 170 Installation and Hardware Reference Manual A.2.5 Controller Architecture The controller is developed from Infortrend's PowerPC-500133 ASIC architecture, a third-generation, 64-bit controller design that efficiently eliminates internal bottlenecks. The controller's high performance derives from a state-of-the–art PowerPC® 750CXe RISC microprocessor, which provides a 64-bit 133MHz path to SDRAM.
Appendix A: SentinelRAID Features A.4. Functional Features A.4.1 RAID Levels Supported The following RAID levels are supported: RAID 0, 1(0+1), 3, 5, 10, 30, 50, NRAID and JBOD. A.4.2 Controller Chassis The 5.25-inch profile of the controller chassis allows it to be easily integrated into an external subsystem enclosure or directly into a host systems drive bay.
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Appendix B: Hardware Specifications Appendix B Hardware Specifications B.1.
SentinelRAID 170 Installation and Hardware Reference Manual B.2.
Appendix B: Hardware Specifications B.4. Fault Tolerance Specification Feature Drive S.M.A.R.T. Support Yes (with user-configurable detect only, clone and replace, and perpetual clone functions) Yes Yes Yes Yes Battery Back-up Option SAF-TE Support S.E.S.
SentinelRAID 170 Installation and Hardware Reference Manual B.5. Software Specification Feature In-band Text RAID Manager RAIDWatch Manager Yes (all major platforms) LAN/WAN Support via SNMP Yes (for any platform that supports Java 2.0 or for Java Applet running via web browser) Yes Table B-5: Available Software B.6. Technical Specifications B.6.1 Physical Dimensions Specification Size Controller Size in Frame 10.39 x 5.74 x 1.60 (L x W x H) inches Main Board Height with Daughterboard 1.
Appendix B: Hardware Specifications B.6.
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Appendix C: Hardware Troubleshooting Appendix C Hardware Troubleshooting C.1. Problem ♦ LCD is off 1. 2. Check the power connection on the controller board and LCD panel. Check that a minimum of 128MB SDRAM DIMM is installed. ♦ 7-segment LED flashes "F" 1. The DIMM module is not installed yet. 2. The socket plug (loop-back circuits board) for the battery charger connector (JP8) is not installed. Problem 7-segment LED flashes "F" Solution 1. DIMM module not installed yet. 2.
SentinelRAID 170 Installation and Hardware Reference Manual Parity error detected SDRAM DIMM should be replaced. Logical drive failure detected during boot-up Check proper installation or connection of drives (use the "View and Edit SCSI drives" function to help locating the problem). System is not stable after running for a period of time. 1. SCSI cable length must be within the range of specifications. 2. Make sure terminators are properly installed. 3.
Appendix C: Hardware Troubleshooting All settings are too complex to remember. 1. After system installation is complete, write down all the settings and related information using Chapter 11 of your “Generic Operation Manual” for future reference. You may also save your configuration data as a retrievable file (using TextRAID manager) or save it to disks. 2.
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Appendix D: Spare Parts and Accessories Appendix D Spare Parts and Accessories D.1. Spare Parts The following table lists the available spare parts for the SR 1700/2700 external controllers. Spare Part Part Number Description Daughter Board IFT- 9284U4A Expansion board with four additional SCSI-320 interfaces Table D-1: SR 170 Spare Parts D.2. Accessories The following table lists the available accessories for the SR 1700/2700 external controllers.
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Appendix E: Connectors and Jumper Identification Appendix E Connectors and Jumper Identification E.1.
SentinelRAID 170 Installation and Hardware Reference Manual E.2.
Appendix E: Connectors and Jumper Identification E.3. LED Jumper Pin Outs E.3.1 JP 2 LED Pin Description Pin Description 1 Partner Failed 2 GND E.3.2 JP 3 LED Pin Description Pin Description 1 Ready 2 GND Pin Description Pin Description 1 Not Ready 2 GND E.3.3 JP 4 LED E.4. COM Port Pin Outs E.4.
SentinelRAID 170 Installation and Hardware Reference Manual E.4.2 JP 17 RS-232C Port Pin Description Pin Description 1 DCD2 6 DSR2 2 RXD2 7 RTS2 3 TXD2 8 CTS2 4 DTR2 9 RS232 RESET 5 GND 10 N/C E.5. J3 I2C Port E.5.1 I2C Port Pin Outs Pin Pin Name 1 I2CCLK 2 GND 3 VCC 4 I2CDATA E.5.
Appendix E: Connectors and Jumper Identification E.6. J1 Battery Connector Pin Pin Name 1 VB (battery voltage +) 2 BAT-THM (battery temperature) 3 VBATTL (battery voltage -) 4 VBATTL (battery voltage -) E.7. TTL Device Parameters Symbol Parameter Rating Unit VIN Input voltage -0.5 to +7.0 V IIN Input current -30 to +5 mA VOUT Voltage applied to output in high output state -0.
SentinelRAID 170 Installation and Hardware Reference Manual E.8. IFT- 9011 Null Modem Swap pin-2 and pin-3 Swap pin-4 and pin-6 Swap pin-7 and pin-8 E.9.
INDEX --A-accessory box, 1-7 audible alarm, 1-11, 3-1, 3-3 automatic bad block assignment, A-2 --B-background rebuilding, A-2 base channels, 1-4 battery charger board, 1-8, 2-6 battery connector, 1-2, 1-5 battery packs, 1-8, 5-4 BBU charger board, 4-7, 5-1, 5-2, 5-4, 5-6 BBU module, 1-2, 1-8, 2-3, 2-4, 2-6, 4-7, 51, 5-2 buffered data, 1-8 --C-cable specifications cache memory, 1-8 capacitance, 4-1 capacity expansion, A-1 channel expansion, A-1 Check List, 4-7 COM ports, 1-1 COM1, 3-1 component check, 2-1
SentinelRAID 170 Installation and Hardware Reference Manual I/O port cabling, 2-2 I2C bus, 1-10 I2C connector, 1-2, 1-5, 3-3 I2C, 3-1 impedance, 4-1 installation procedure, 2-3 irreparable damage, 5-1 --J-jumper setting, 4-6 jumpers, 1-4 --L-LAN port, 1-2 LCD panel, 1-2, 1-3, 1-10, 3-2, 5-1 LCD screen, 1-3, 2-4, 4-8 LED, 3-1 local Spare, A-2 --M-maintenance operations, 5-1 maintenance procedures, 5-1 maintenance, 5-1, A-1 memory capacity, 2-5 memory module, 2-1, 4-7 module locations, 2-2 monitoring, 5-1
Index storage devices, 1-2 surface temperature, 2-6 unpacking, 2-1, 2-3 user serviceable, 5-1 --T-- --V-- temperature threshold, 3-1 terminal emulation program, 1-10, 4-6 terminator, 4-5 top cover, 2-4 ventilation, 2-1 verify-after-write, A-2 VHDCI SCSI connector, 1-1 --U-unique ID, 4-2 Unpacking List, 2-1, 2-3 Index --W-working integrity, 5-1 working surface, 2-2 I--3
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