HP Compaq TL881 User Manual

TL881 MiniLibrary System

Users Guide

First Edition (May 1999) Part Number ER-TL881-UA. A01/138247-001 Compaq Computer Corporation

Notice

The information in this publication is subject to change without notice. COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR

EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR

USE OF THIS MATERIAL. THIS INFORMATION IS PROVIDED “AS IS” AND COMPAQ COMPUTER CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR STATUTORY AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE AND AGAINST INFRINGEMENT.

This publication contains information protected by copyright. No part of this publication may be photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation.

The software may be used or copied only in accordance with the terms of the agreement. Compaq, Deskpro, Fastart, Compaq Insight Manager, Systempro, Systempro/LT, ProLiant, ROMPaq,

QVision, SmartStart, NetFlex, QuickFind, PaqFax, ProSignia, registered United States Patent and Trademark Office.

Neoserver, Netelligent, Systempro/XL, SoftPaq, QuickBlank, QuickLock are trademarks and/or service marks of Compaq Computer Corporation.

Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Pentium is a registered trademark and Xeon is a trademark of Intel Corporation. Other product names mentioned herein may be trademarks and/or registered trademarks of their

respective companies.

Compaq TL881 MiniLibrary System Users Guide First Edition (May 1999) Part Number ER-TL881-UA. A01/138247-001

About This Guide

Text Conventions.........................................................................................................xi

Symbols in Text..........................................................................................................xii

Symbols on Equipment...............................................................................................xii

Rack Stability............................................................................................................ xiii

Getting Help.............................................................................................................. xiii

Compaq Technical Support............................................................................... xiii

Compaq Website.................................................................................................xiv

Compaq Authorized Reseller .............................................................................xiv

Chapter 1

Introduction

The TL881 MiniLibrary............................................................................................ 1-1

Modules ............................................................................................................. 1-1

The Expansion Unit........................................................................................... 1-2

The MiniLibrary Base Module.......................................................................... 1-3

The Data Unit .................................................................................................... 1-4

SCSI Interface Configurations .......................................................................... 1-5

SCSI Bus Performance Considerations............................................................. 1-5

Physical Configuration...................................................................................... 1-5

System Expansion.............................................................................................. 1-6

Features.............................................................................................................. 1-6

Advanced Design Features.............................................................................. 1-10

iv Compaq TL881 MiniLibrary System Users Guide

Chapter 2

Operation

Operation Overview ..................................................................................................2-1

Expansion Unit...................................................................................................2-1

MiniLibrary Base Module..................................................................................2-5

Data Unit ............................................................................................................2-7

Starting the System...........................................................................................2-10

The MiniLibrary Menu Structure.....................................................................2-13

Inserting and Removing Cartridges..................................................................2-26

Inserting a Magazine ........................................................................................2-31

MiniLibrary Base Module................................................................................2-32

TL881 Components.................................................................................................2-35

Storage Architecture.........................................................................................2-35

The Expansion Unit..........................................................................................2-36

The MiniLibrary Base Module.........................................................................2-36

The Data Unit...................................................................................................2-36

SCSI Interface Configurations .........................................................................2-36

SCSI Bus Performance Considerations............................................................2-37

Drives ...............................................................................................................2-37

Internal Cabling Configuration ........................................................................2-37

Bus Length Limitations....................................................................................2-37

Physical Configuration.....................................................................................2-37

System Expansion ............................................................................................2-38

Free-Standing MiniLibrary Base Modules Conversion...................................2-38

Features.............................................................................................................2-38

Control Panel....................................................................................................2-39

Display..............................................................................................................2-39

Magazine Security Lock...................................................................................2-39

Power Supply....................................................................................................2-40

Tape Cartridge Magazines................................................................................2-40

Integral Fan Cooling.........................................................................................2-42

Library Robotics...............................................................................................2-42

Bar Code Reader...............................................................................................2-42

Chapter 3

Installation

Installation Overview ................................................................................................3-1

Introduction ........................................................................................................3-1

Planning Your Installation..................................................................................3-3

Mechanical Installation ......................................................................................3-4

Chapter 4

Configuration

Configuration Overview........................................................................................... 4-1

Customizing Your Configuration...................................................................... 4-1

Descriptions of Configuration Options ............................................................. 4-4

Chapter 5

Regular Maintenance

Maintenance Overview............................................................................................. 5-1

Cleaning Cartridge............................................................................................. 5-2

Chapter 6

Diagnostics and Troubleshooting

Diagnostics and Troubleshooting Overview ............................................................ 6-1

Diagnosing Problems......................................................................................... 6-1

Error Recovery .................................................................................................. 6-2

Fault Symptom Codes (FSC)............................................................................. 6-5

Using CE Diagnostics...................................................................................... 6-25

Using the Demo Submenu............................................................................... 6-26

About This Guide v

Appendix A

Specifications

Introduction...............................................................................................................A-1

Safety.................................................................................................................A-5

Electromagnetic Emission.................................................................................A-6

Statement for Equipment Meeting FCC Class A Requirements.......................A-8

Equipment Meeting VDE Class B Requirements .............................................A-9

(VFG 1046/84 and VFG 243/91 for Germany).................................................A-9

VCCI Notice for Japan Class I Equipment .....................................................A-10

Appendix B

Accessories

Supplies and Accessories..........................................................................................B-1

Data and Cleaning Cartridge Ordering Information..........................................B-1

Bar Code Label and Magazine Ordering Information.......................................B-2

Appendix C

Product Notes for Windows NT and Novell Netware

Overview...................................................................................................................C-1

Host SCSI Interface...........................................................................................C-1

vi Compaq TL881 MiniLibrary System Users Guide

Appendix D

Adding a Second Tape Drive

Parts Location...........................................................................................................D-1

Overall Procedure.....................................................................................................D-2

Removing and Replacing the Skin Cover (Desktop Models Only)..................D-2

Removing and Replacing the Cover Plate.........................................................D-3

Removing and Replacing the Drive Caddy Assembly......................................D-5

Installing the Second Tape Drive......................................................................D-7

Appendix E

Information on Pass-Through Section Covers

Introduction...............................................................................................................E-1

Pass-Thru Mechanism Section Covers.............................................................. E-1

Appendix F

Tape Drives and Cartridges

Overview................................................................................................................... F-1

Care and Handling of Cartridges....................................................................... F-1

Checking a Cartridge for Damage..................................................................... F-3

Archival Guidelines.................................................................................................. F-4

Transportation Guidelines................................................................................. F-5

Cleaning Guidelines .......................................................................................... F-6

Cleaning the Tape Drive Heads......................................................................... F-8

Preparing Cartridges for Use............................................................................. F-9

Index

About This Guide vii

List of Figures

Figure 1-1. Expansion Unit Front View.................................................................. 1-3

Figure 1-2. MiniLibrary Base Module Front View................................................. 1-4

Figure 1-3. Data Unit Front View............................................................................ 1-5

Figure 1-4. MiniLibrary Base Module 10-Cartridge Magazine ............................ 1-9

Figure 1-5. Expansion Unit Rear View ................................................................... 1-9

Figure 1-6. MiniLibrary Base Module Rear View ................................................ 1-10

Figure 1-7. Data Unit Rear View........................................................................... 1-10

Figure 2-1. Expansion Unit Front Panel.................................................................. 2-2

Figure 2-2. Expansion Unit Control Panel .............................................................. 2-3

Figure 2-3. MiniLibrary Base Module Front Panel................................................. 2-5

Figure 2-4. MiniLibrary Base Module Control Panel ............................................. 2-7

Figure 2-5.................................................................................................................. 2-8

Figure 2-6. Data Unit Front Panel ........................................................................... 2-8

Figure 2-7. Data Unit Control Panel........................................................................ 2-9

Figure 2-8. POST Screen....................................................................................... 2-11

Figure 2-9. Initialization Screen ............................................................................ 2-11

Figure 2-10. Default Screen................................................................................... 2-11

Figure 2-11. Fault Screen ...................................................................................... 2-12

Figure 2-12. MiniLibrary Base Module Default Screen........................................ 2-12

Figure 2-13. MiniLibrary Menu Structure............................................................. 2-15

Figure 2-14. Main Menu....................................................................................... 2-16

Figure 2-15. Panel Locked Screen......................................................................... 2-16

Figure 2-16. Code Entry Submenu........................................................................ 2-17

Figure 2-17. Show Status Menu ............................................................................ 2-18

Figure 2-18. Library Status Submenu.................................................................... 2-18

Figure 2-19. Drive Status Menu ............................................................................ 2-19

Figure 2-20. Map Info Submenu ........................................................................... 2-20

Figure 2-21. Security Menu................................................................................... 2-21

Figure 2-22. Code Select Submenu....................................................................... 2-21

Figure 2-23. Code Accept Submenu...................................................................... 2-22

Figure 2-24. Panel Locked Screen......................................................................... 2-22

Figure 2-25. Code Entry Submenu........................................................................ 2-22

Figure 2-26. Code Validate Submenu ................................................................... 2-23

Figure 2-27. Error History Screen......................................................................... 2-23

Figure 2-28. Default Screen................................................................................... 2-24

Figure 2-29. Main Menu........................................................................................ 2-24

Figure 2-30. Load/Unload Initial Screen............................................................... 2-24

Figure 2-31. Load/Unload ‘From‘ Entry Screen ................................................... 2-25

Figure 2-32. Load/Unload ‘To’ Entry Screen ....................................................... 2-26

Figure 2-33. Confirmation Screen......................................................................... 2-26

Figure 2-34. Load/Unload ‘In Progress’ Screen.................................................... 2-26

Figure 2-35. Magazine In Place............................................................................. 2-28

Figure 2-36.............................................................................................................. 2-28

Figure 2-37. Main Menu........................................................................................ 2-28

Figure 2-38. Main Menu, Scrolled ........................................................................ 2-29

viii Compaq TL881 MiniLibrary System Users Guide

Figure 2-39. Security Menu....................................................................................2-29

Figure 2-40. Unlock All Media Screen ..................................................................2-29

Figure 2-41. 10-Slot Tape Magazine with Cartridges Installed.............................2-30

Figure 2-42. Main Menu.........................................................................................2-30

Figure 2-43. Main Menu, Scrolled .........................................................................2-30

Figure 2-44. Security Menu....................................................................................2-31

Figure 2-45. Unlock All Media Screen ..................................................................2-31

Figure 2-46. Lock All Media Screen......................................................................2-31

Figure 2-47. MiniLibrary Base Module Front Panel

Figure 2-48. DLT Tape Cartridge...........................................................................2-34

Figure 2-49. Expansion Unit and Data Unit Front View .......................................2-38

Figure 2-50. MiniLibrary Base Module Front View..............................................2-39

Figure 2-51. MiniLibrary Base Module 10-Cartridge Magazine...........................2-41

Figure 2-52. Expansion Unit Rear View................................................................2-41

Figure 2-53. MiniLibrary Base Module Rear View...............................................2-42

Figure 2-54. Data Unit Rear View..........................................................................2-42

Figure 3-1. Pass-Thru Mechanism External Parts

Figure 3-2. Pass-Thru Mechanism Car (Front View)...............................................3-5

Figure 3-3. Car Rear View Showing Belt Block......................................................3-6

Figure 3-4. Pass-Thru Mechanism Assembled.........................................................3-8

Figure 3-5. Threading the Belt through the Drive Section.....................................3-10

Figure 3-6. Threading the Belt through the Base Section......................................3-11

Figure 3-7. Checking Belt Length..........................................................................3-12

Figure 3-8. Belt Block With Belt In Place .............................................................3-12

Figure 3-9. Aligning the Captive Screws With the Block......................................3-13

Figure 3-10. Separating a Rack Slide.....................................................................3-16

Figure 3-11. Rack Slide Parts for Standard 19” EIA/RETMA

Rackmounting....................................................................................................3-18

Figure 3-12. Parts List for StorageWorks Metric Rackmounting ..........................3-20

Figure 3-13. Metric Rackmount Installation Layout..............................................3-23

Figure 3-14. Installing the Pass-Thru Mechanism in the Rack..............................3-24

Figure 3-15. Expansion Unit SCSI Connectors and Cables

(Fast/Wide SCSI Shown)...................................................................................3-26

Figure 3-16. MiniLibrary Base Module SCSI Connectors, Terminators and

Cables (Fast/Wide Interface, Independent Bus Connection Shown) ................3-30

Figure 3-17. MiniLibrary Base Module SCSI Connectors, Terminator,

Jumpers and Cables (SCSI-2 Interface, Daisy-chained Connection

Shown)...............................................................................................................3-31

Figure 3-18. MiniLibrary Base Module Default Screen ........................................3-32

Figure 3-19. MiniLibrary Base Module Main Menu..............................................3-32

Figure 3-20. Configure Submenu...........................................................................3-33

Figure 3-21. Configure Submenu, Scrolled............................................................3-33

Figure 3-22. Special Config Submenu ...................................................................3-33

Figure 3-23. Special Config Submenu, Scrolled....................................................3-33

Figure 3-24. Acknowledgment Screen...................................................................3-34

Figure 3-25. Default Screen....................................................................................3-34

..........................................2-32

................................................3-4

About This Guide ix

Figure 3-26. Main Menu........................................................................................ 3-34

Figure 3-27. Configure Submenu .......................................................................... 3-35

Figure 3-28. Set SCSI Submenu............................................................................ 3-35

Figure 3-29. Set SCSI Submenu Scrolled ............................................................. 3-36

Figure 3-30. Set Mail Slot Submenu ..................................................................... 3-37

Figure 3-31. Set Mail Slot Submenu Enabled....................................................... 3-37

Figure 3-32. Set Reserved Slots Submenu ............................................................ 3-38

Figure 4-1. Default Screen....................................................................................... 4-2

Figure 4-2. Main Menu............................................................................................ 4-2

Figure 4-3. Configure Submenu .............................................................................. 4-2

Figure 4-4. Drive Selection Submenu ..................................................................... 4-3

Figure 4-5. Set Data Format Submenu .................................................................... 4-3

Figure 4-6. Main Menu............................................................................................ 4-5

Figure 4-7. Configure Submenu .............................................................................. 4-5

Figure 4-8. Library Mode Selection Menu.............................................................. 4-5

Figure 4-9. Configure Submenu .............................................................................. 4-6

Figure 4-10. Special Config Submenu..................................................................... 4-6

Figure 5-1. Main Menu............................................................................................ 5-3

Figure 5-2. Maintenance Submenu.......................................................................... 5-3

Figure 5-3. Cleaning Submenu................................................................................ 5-3

Figure 5-4. Cleaning Confirmation Screen.............................................................. 5-4

Figure 5-5. Cleaning In Progress Screen................................................................. 5-4

Figure 6-1. Troubleshooting Flow Chart................................................................. 6-3

Figure 6-2. Main Menu.......................................................................................... 6-25

Figure 6-3. Maintenance Submenu........................................................................ 6-25

Figure 6-4. Diagnostic Submenu........................................................................... 6-25

Figure D-1. Parts Location ......................................................................................D-2

Figure D-2. Removing the Skin Cover....................................................................D-3

Figure D-3. Removing the Cover Plate ...................................................................D-5

Figure D-4. Drive Caddy.........................................................................................D-6

Figure E-1. Cover Assembly Side Plate ..................................................................E-2

Figure E-2. Mechanism Section Cover................................................................... E-2

Figure F-1. Opening the cartridge door................................................................... F-3

Figure F-2. Correct and incorrect cartridge (takeup) leader positions .................... F-4

Figure F-3. Applying a bar code label..................................................................... F-9

Figure F-4. Write-protecting a cartridge................................................................ F-10

Figure F-5. Tape Drive Control Panel................................................................... F-11

List of Tables

Table 1-1 MiniLibrary system Tape Capacity........................................................ 1-11

Table 2-1 Control Panel Button Functions............................................................... 2-4

Table 3-1 Belt Length for Various System Sizes ................................................... 3-10

Table 3-2 MiniLibrary Configuration Options....................................................... 3-41

Table 3-3 MiniLibrary Special Configuration Options.......................................... 3-46

Table 4-1 MiniLibrary Configuration Options......................................................... 4-8

x Compaq TL881 MiniLibrary System Users Guide

Table 4-2 MiniLibrary Special Configuration Options...........................................4-12

Table 4-3 MiniLibrary Special Configuration Options...........................................4-13

Table 6-1 Error Recovery Procedures.......................................................................6-4

Table 6-2 Fault Symptom Codes...............................................................................6-5

Table A-1 Operational Performance Specifications.................................................A-1

Table A-2 Reliability Specifications (Drives)..........................................................A-2

Table A-3 Power Specifications...............................................................................A-2

Table A-4 Reliability Specifications (Library Robotics) .........................................A-3

Table A-4 Mechanical Specifications.......................................................................A-3

Table A-5 Mechanical Specifications.......................................................................A-3

Table A-7 Environmental Specifications (Operating)..............................................A-4

Table A-7 Environmental Specifications (Packed or Unpacked) ............................A-4

Table A-7 Environmental Specifications (Storage/Transit).....................................A-4

Table A-7 Acoustic Emission Level.........................................................................A-5

Table A-11 Regulatory Agency Product Safety Certifications................................A-5

Table A-11 Regulatory Agency Product Safety Certifications................................A-7

Table B-1 Compaq Tape Data or Cleaning Cartridges Part Numbers .....................B-1

Table B-1 Bar Code Label and Magazine Part Numbers.........................................B-2

Table F-1 Cartridge Environmental Guidelines ....................................................... F-5

Table F-2 Cleaning Cartridge Guidelines................................................................. F-7

Table F-3 Tape Drive Control Panel ...................................................................... F-12

This guide is designed to be used as step-by-step instructions for installation and as a reference for operation, troubleshooting, and future upgrades.

Text Conventions

This document uses the following conventions to distinguish elements of text:

Keys Keys appear in boldface. A plus sign (+) between

USER INPUT User input appears in a different typeface and in

FILENAMES File names appear in uppercase italics.

About This Guide

two keys indicates that they should be pressed simultaneously.

uppercase.

Menu Options, Command Names, Dialog Box Names

COMMANDS, DIRECTORY NAMES, and DRIVE NAMES

Type When you are instructed to type information, type

Enter When you are instructed to enter information, type

These elements appear in initial capital letters.

These elements appear in uppercase.

the information without pressing the Enter key.

the information and then press the Enter key.

xii Compaq TL881 MiniLibrary System Users Guide

Symbols in Text

These symbols may be found in the text of this guide. They have the following meanings.

WARNING: Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information.

IMPORTANT: Text set off in this manner presents clarifying information or specific instructions.

NOTE: Text set off in this manner presents commentary, sidelights, or interesting points of information.

Symbols on Equipment

These icons may be located on equipment in areas where hazardous conditions may exist.

Any surface or area of the equipment marked with these symbols indicates the presence of electrical shock hazards. Enclosed area contains no operator serviceable parts. WARNING: To reduce the risk of injury from electrical shock hazards, do not open this enclosure.

Any RJ-45 receptacle marked with these symbols indicates a Network Interface Connection. WARNING: To reduce the risk of electrical shock, fire, or damage to the equipment, do not plug telephone or telecommunications connectors into this receptacle.

Rack Stability

About This Guide xiii

Any surface or area of the equipment marked with these symbols indicates the presence of a hot surface or hot component. If this surface is contacted, the potential for injury exists. WARNING: To reduce the risk of injury from a hot component, allow the surface to cool before touching.

Power Supplies or Systems marked with these symbols indicate the equipment is supplied by multiple sources of power.

WARNING: To reduce the risk of injury from electrical shock, remove all power cords to completely disconnect power from the system.

WARNING: To reduce the risk of personal injury or damage to the equipment, be sure that:

■

The leveling jacks are extended to the floor.

■

The full weight of the rack rests on the leveling jacks.

■

The stabilizing feet are attached to the rack if it is a single rack

installations.

■

The racks are coupled together in multiple rack installations.

■

A rack may become unstable if more than one component is extended for

any reason. Extend only one component at a time.

Getting Help

If you have a problem and have exhausted the information in this guide, you can get further information and other help in the following locations.

Compaq Technical Support

You are entitled to free hardware technical telephone support for your product for as long you own the product. A technical support specialist will help you diagnose the problem or guide you to the next step in the warranty process.

xiv Compaq TL881 MiniLibrary System Users Guide

In North America, call the Compaq Technical Phone Support Center at 1-800-OK-COMPAQ

Outside North America, call the nearest Compaq Technical Support Phone Center. Telephone numbers for world wide Technical Support Centers are listed on the Compaq website. Access the Compaq website by logging on to the Internet at http://www.compaq.com.

Be sure to have the following information available before you call Compaq:

■

Technical support registration number (if applicable)

■

Product serial number (s)

■

Product model name(s) and numbers(s)

■

Applicable error messages

■

Add-on boards or hardware

■

Third-party hardware or software

■

Operating system type and revision level

■

Detailed, specific questions

Compaq Website

. This service is available 24 hours a day, 7 days a week.

The Compaq website has information on this product as well as the latest drivers and Flash ROM images. You can access the Compaq website by logging on to the Internet at http://www.compaq.com.

Compaq Authorized Reseller

For the name of your nearest Compaq Authorized Reseller:

■

In the United States, call 1-800-345-1518.

■

In Canada, call 1-800-263-5868.

■

Elsewhere, see the Compaq website for locations and telephone numbers.

For continuous quality improvement, calls may be recorded or monitored.

The TL881 MiniLibrary

This chapter describes the features of the MiniLibrary Expansion Unit, the MiniLibrary Base Module, and the MiniLibrary Data Unit of the MiniLibrary system, including storage architecture, SCSI interface, bus performance, and physical configuration/expansion options.

The MiniLibrary system is an expandable, modular tape library system that combines DLT technology drive with advanced robotics. The MiniLibrary system is designed for high duty-cycle on-line and near-on-line applications, such as hierarchical storage management (HSM). It is a superior performer in high-volume backup and archival service as well.

Chapter

Introduction

Modules

The MiniLibrary system is based on three types of modules:

n Expansion Unit (Master) n MiniLibrary Base Module n Data Unit

The MiniLibrary system consists of one Expansion Unit and up to five MiniLibrary Base Modules and Data Units in combination stacked in a rack. The Expansion Unit can move media freely between itself, the MiniLibrary

Base Module, and the Data Unit by way of the system’s robotically controlled Pass-Thru Mechanism.

1-2 Compaq TL881 Minilibrary System Users Guide

In a MiniLibrary system, you can combine modules to provide the right combination of capacity and performance to meet your present storage

requirements. Compaq’s MiniLibrary storage architecture lets you add modules to optimize throughput and capacity as your needs change.

MiniLibrary Storage Architecture

When connected as a system, the robotics in the Expansion Unit act as commanded by the host computer(s). The host(s) need no knowledge of the internal geometry of the system, or of the actions or capabilities of the MiniLibrary Base Modules or Data Units.

The Expansion Unit presents to the host(s) a single SCSI medium changer device with a single SCSI Medium Transport element, several SCSI Storage elements equal to the total number of cartridge magazine slots, a number of SCSI Import/Export elements as specified by the user during configuration of the Expansion Unit, and a number of SCSI Data Transfer elements equal to the total number of drives in the system.

Flexibility

Compaq’s MiniLibrary storage architecture is uniquely suited to growing storage needs. Its flexible library robotics system enables you to start with a system configured to your present requirements, confident that as your storage needs evolve, you can easily modify the MiniLibrary by adding modules and extending the Pass-Thru Mechanism. Add drives for faster performance or magazine space for greater capacity, as needed. Then just turn on the power, and immediately the system updates the system map so the host is informed of the expanded capability.

The Expansion Unit

The Expansion Unit (Figure 1–1) integrates the robotics in the individual modules into a single, coordinated library robotics system. The Expansion Unit performs and maintains an inventory of all media present in the system, including bar code data. All necessary system control operations may be performed from the control panel of the Expansion Unit, as well as from the host via software. The SCSI interface for the library robotics is designed for high-speed communication with the host, and Fast/Wide SCSI configurations.

Introduction 1-3

SHR-1194

Figure 1-1. Expansion Unit Front View

16-Cartridge magazine

Magazine security lock

Control panel

Unlock /Open button

Locked indicator

Power switch

In addition to its system control functions, the Expansion Unit has a 16cartridge magazine with a rugged random access robotic mechanism. The module robotics moves cartridges between the Pass-Thru Mechanism and any of the 16 cartridge storage locations.

The user may designate a magazine in one of the MiniLibrary Base Modules as a mail slot for inserting or removing one or more single cartridges, which implements the SCSI Import/Export commands.

NOTE: A magazine that has been reserved for Import/Export service may not be used for data storage.

1-4 Compaq TL881 Minilibrary System Users Guide

The MiniLibrary Base Module

The MiniLibrary Base Module (Figure 1–2) has one or two DLT 20/40 tape drives and a 10-cartridge magazine with a rugged random access robotic mechanism. The TL881 using one or two DLT20/40 series drives, also uses the DLTtape IV cartridges, which provide a native capacity of 20 GB per cartridge. All models can also read and write DLTtape III and DLT tape IIIxt cartridges. Both read and write densities are selectable from the front panel, and under SCSI control from the host. These units are available as differential rack-mount or table-top versions, as well as a single-ended table-top-only version.

Drive

Fault

Figure 1-2. MiniLibrary Base Module Front View

10-Cartridge magazine

Magazine security lock

Control panel

Unlock/Open button

Locked indicator

Power switch

SHR-1195

The Data Unit

The Data Unit (Figure 1–3) has a 16-cartridge magazine, a random access robotic mechanism, and no tape drives. The module robotics, under control of the Expansion Unit, moves cartridges between the Pass-Thru Mechanism and any of the 16 cartridge storage locations.

Introduction 1-5

Figure 1-3. Data Unit Front View

16-Cartridge magazine

Magazine security lock

Control panel

4 5 6

SCSI Interface Configurations

Systems are equipped with DLT 20/40 drives use a narrow SCSI interface using high-density 68-pin D-series connectors. The section on SCSI Interfaces in Chapter 3, Installation, describes the available interface options.

SCSI Bus Performance Considerations

Data Transfer Rate

The data transfer rate of the MiniLibrary is dependent on the type and number of drives and on the SCSI bus configuration. The bandwidth of the SCSI bus is limited. As a result, the transfer rate of drives such as the DLT20/40 can be limited by sharing a SCSI bus with another disc drive on tape. It is recommended that the MiniLibrary be installed on its own controller for optimum performance.

Unlock /Open button Locked indicator Power switch

SHR-1194

1-6 Compaq TL881 Minilibrary System Users Guide

Drives

With a standard SCSI interface, modules equipped with DLT 20/40 drives have a native data transfer rate of 1.5 MB/second, 3.0 MB/sec for two drives. The rates for compressed data are dependent on compression ratio, record size, data type, and other system parameters, but averages approximately 1:7.

Internal Cabling Configuration

The differential version of the MiniLibrary base module is wired in an independent-bus SCSI configuration. That is, the robotics and each of the drives has its own SCSI bus. SCSI jumpers are available for those applications requiring that some combination of drives and robotics be daisy-chained to a single SCSI bus. The single-ended table-top version, however, has the first driver daisy-chained internally to the robotics in order to reduce cable length. These configurations are described in more detail in the section on SCSI Interfaces in Chapter 3, Installation.

Physical Configuration

The Expansion Unit must be mounted at the top of the stack, which places its control panel at a convenient height. The control panels of the MiniLibrary Base Modules and Data Units are of secondary importance, as they serve mainly to help localize system failures. When installed, the motor drive assembly of the Pass-Thru Mechanism is directly behind the Expansion Unit.

MiniLibrary Base Modules may be installed anywhere below the Expansion Unit, in any order. There may be a slight performance advantage in making the MiniLibrary Base Modules contiguous, but gaps are permitted. The size of a gap is limited by the fact that each gap must be bridged by some number of 7" Pass-Thru Mechanism track sections. For safety, available cover plates should be installed on all Pass-Thru Mechanism sections that are not connected to MiniLibrary modules.

The Expansion Unit senses the position of each module during initialization at power-up. Even if there are gaps between modules, the system will operate correctly. If you plan to leave gaps between modules, be sure to order additional Pass-Thru Mechanism track segments and cover plates equal to the length of the gap.

System Expansion

A MiniLibrary system may be expanded in capacity and performance by adding or removing TL881 modules. Associated with the Expansion Unit and each MiniLibrary Base Module is a section of the Pass-Thru Mechanism.

Features

Introduction 1-7

System firmware integrates all of the robotics of these system modules with that of the Pass-Thru Mechanism into a single high-performance library robotics system.

There are a number of important external features to note about the Expansion

Unit, the MiniLibrary Base Module and the Data Unit. See Figures 1–1 through 1–7 to locate the features described here.

Control Panel

The control panels for all modules are the same, except for the number of LED indicators. The control panel features a 4-line by 20-character backlit LCD display, three or four LED indicators, and four buttons. The buttons enable the operator to navigate through the menu structure to select and display operating modes, device status, diagnostic and maintenance functions, device history and error statistics, and system configuration. The functions of the control panel are described in detail in Chapter 2, Operation.

Display

The backlit 4-line by 20-character control panel display provides a highly intelligible presentation of drive and loader status, menu choices and error messages. The scrolling feature greatly expands the amount of information available to the operator. In the Expansion Unit, status information is available for the entire system. The MiniLibrary Base Modules display other information as needed for localizing malfunctions.

Magazine Security Lock

The Magazine Security Lock is a key-operated switch on the front panel of each module. It can be used to prevent inadvertent removal of the cartridge magazine.

Power Supply

The AC Power switch is located on the front panel of the module. The autoranging power supply will adjust automatically to either of two operating voltage ranges. The ranges are 100-120 VAC and 200-240 VAC. The power supply is capable of operating at 50 or 60 Hz without any adjustment or modification. AC power is supplied to the power supply by a single IECcompatible socket that can be connected to any properly grounded outlet.

1-8 Compaq TL881 Minilibrary System Users Guide

Tape Cartridge Magazines

The 10-cartridge and 16-cartridge magazines are removable from the front panel, but may be protected from tampering by any of three means: 1) a keyoperated Magazine Security Lock which must be unlocked before the magazine can be removed, 2) an electronic combination lock operated by using buttons on the Expansion Unit control panel, and 3) issuance by the host

of a SCSI ‘Prevent Medium Removal’ command. The rugged carbon-fiberreinforced polymer magazine fits into an extruded track, which assures precise positioning with respect to the library robotics. A 10-cartridge tape magazine is shown in Figure 1–4. Insertion and removal of the magazine is described in Chapter 2, Operation.

Integral Fan Cooling

A single forced-air fan is mounted inside each module to provide optimum cooling for critical parts, and to prevent the drive and robotics electronics, motors and power supply from overheating.

Library Robotics

The MiniLibrary system features library robotics that can load any of the cartridges stored in any magazine in the system into any of the tape drives, moving cartridges among as many as six modules within the MiniLibrary system.

Bar Code Reader

The bar code reader is mounted on the cartridge shuttle in each module. It reads bar code labels attached to each cartridge, and maintains the bar code data in memory as part of the library System Map.

Figure 1-4. MiniLibrary Base Module 10-Cartridge Magazine

Slot 0

Front label slide slot

Barcode label slide slot (not used)

Slot 9

Introduction 1-9

SHR-1226

Figure 1-5. Expansion Unit Rear View

Pass-Thru Mechanism

motor drive Power connector

MiniLibrary Base Module robotics interface connectors

SHR-1227

Library robotics SCSI interface

Diagnostics connector

1-10 Compaq TL881 Minilibrary System Users Guide

Figure 1-6. MiniLibrary Base Module Rear View

SCSI interface

Expansion Unit interface

3 4

Figure 1-7. Data Unit Rear View

Power connector

SHR-1228

Power connector Fan

SHR-1321

Flash connector

Advanced Design Features

The MiniLibrary system incorporates many significant improvements in tape drive and library design. One of the most important is the use of highly reliable DLT technology, with media rated by the media manufacturer at better than 1,000,000 head passes.

Embedded Diagnostics

The MiniLibrary system and each of its modules provide three levels of embedded diagnostics. The Power-On Self Test (POST) performs various

verification tests on the system’s configuration and host interface and device control functions, as well as memory tests, at power-up. The second level of diagnostics is the User Diagnostics, which provide for displaying and changing configuration options. The third level, Customer Engineer (CE) Diagnostics, include advanced diagnostics to be used by Customer Engineers for servicing the MiniLibrary system. Both the User Diagnostics and the CE Diagnostics may be selected from the front panel.

User Diagnostics are described in greater detail in Chapter 3, Installation.

Error Checking

Introduction 1-11

Drives used in the MiniLibrary system apply a 16-bit parity check to each record, a 64-bit CRC to each 4 kb of data, and Reed-Solomon error correction code overall. In addition, there is an internal parity check on the data buffer.

Compression

MiniLibrary system drives use the standard Digital Lempel-Ziv (DLZ) data compression algorithm.

Capacity

A MiniLibrary Base Module with its 10-cartridge magazine and a single Expansion Unit with its 16-cartridge magazine offers the formatted capacities shown in Table 1-1.

1-12 Compaq TL881 Minilibrary System Users Guide

MiniLibrary system Tape Capacity

Table 1-1

MODEL CARTRIDGE MAGAZINE

CAPACITY

TL881 DLTtape IV 10 200 GB 400 GB

Expansion Unit DLTtape IV 16 320 GB 640 GB

Data Unit DLT Tape V 16 320 GB 640 GB

FULL MAGAZINE

UNCOMPRESSED

FULL MAGAZINE COMPRESSED @

2:1

Media Life

The media used in the MiniLibrary is rated by the media manufacturer at over 1,000,000 head passes, and a shelf life of at least 30 years.

Operation Overview

This chapter describes manual operation of the MiniLibrary system. The system is operated manually through the MiniLibrary Expansion Unit control panel. Online and offline operations can be done through the control panels of the MiniLibrary Base Module and the MiniLibrary Data Unit.

Expansion Unit

Chapter

Operation

Figure 2-1 shows the front panel of the Expansion Unit. The panel includes a power switch and the Control Panel, which has pushbuttons, LED indicators, and a display.

Power Switch

The power switch controls the supply of AC power to the unit. The switch is recessed into the front panel to prevent accidental power-up or power-down. Press 1 to turn the unit on and press 0 to turn the unit off.

NOTE: The Expansion Unit must be turned on after or simultaneously with the other modules. If this is not done, the Expansion Unit may not be notified of the presence of one or more of the other modules.

2-2 Compaq TL881 Minilibrary System Users Guide

Figure 2-1. Expansion Unit Front Panel

16-Cartridge magazine

Magazine security lock

Control panel

Unlock/Open button

Locked indicator

Power switch

SHR-1194

Control Panel

The Expansion Unit Control Panel (Figure 2–2) contains three LED indicators, a four-line by 20–character backlit LCD display, and four pushbuttons. The pushbuttons enable the operator to navigate through the menu structure to select and display operating modes, device status, diagnostic and maintenance functions, device history and error statistics, and system configuration.

LED Indicators

The three LED indicators on the Control Panel are labeled

Alert (yellow), and Fault (red).

■

Ready (green) - lights when the system is ready to accept commands,

either from the Control Panel or from the host computer. The indicator goes out when you enter the Menu Mode.

■

Alert (yellow) - indicates that a fault or some other matter that requires

attention has occurred in one of the modules in the system. Line 2 of the display blinks the number of the module where the fault has occurred. The Control Panel of the indicated module may give a further indication of the cause of the alert. Often, when the

Alert LED is lit, a Fault LED

is lighted on one or more of the MiniLibrary Base Modules as well.

Ready (green),

Ready

■

Fault (red) - indicates that a fault has occurred in the Expansion Unit, or

that the magazine door is unable to close. When the Fault LED is lighted, a Fault Screen appears on the LCD display. The Fault Screen is described later in this chapter. A list of fault symptom codes (FSC) and error recovery procedures (ERP) appears in Chapter 6, Diagnostics and

Troubleshooting.

eady

lert

Fault

Escape

Enter

Operation 2-3

SHR-1229

Figure 2-2. Expansion Unit Control Panel

Pushbuttons

There are four buttons on the control panel, labeled

Escape, Enter, , and

The buttons do not directly control specific functions or options. Instead, you use the buttons to navigate from the Default Screen through a multi-level menu structure, then select the desired option from the appropriate menu using

Enter button. Table 2-1 describes the effect of each of the four buttons

the under various conditions.

The three most important things you need to know about the buttons are:

1. To enter the Menu Mode and display the Main Menu from the Default

Screen, press the

2. To return to the Main Menu from a submenu, press the

repeatedly until the Main Menu appears. Pressing the

Enter button.

Escape button

while the Main Menu is displayed exits the Menu Mode and returns you to the Default Screen. The Default Screen and the Main Menu are shown later in this chapter.

2-4 Compaq TL881 Minilibrary System Users Guide

3. To display the Show Status Menu only without entering the Menu

Mode, press the

Escape button at the Default Screen. The system

remains online.

NOTE: When you enter the Menu Mode at the Expansion Unit, the Ready light on that module goes out. This means that the MiniLibrary system of responds to all commands from the host with a SCSI Not Ready until you exit the Menu Mode and the Ready light goes on. When you enter the Menu Mode at any of the MiniLibrary Base Modules, the Ready light on that module goes out. This means that the

individual module

pertaining to that module with a SCSI Not Ready until you exit the Menu Mode and the

Ready light goes on.

Screen Escape Enter s Note 1 t Note 1

off-line

, and the system

, and the system responds to all commands from the host

Table 2-1

Control Panel Button Functions

At POST

N/A – Note 2 N/A N/A – Note 3 N/A – Note 3

Screen

At Default Screen

Displays Show Status Submenu

At Status Submenu

Returns to Default Screen

(while online) In Menu Mode Rejects

currently Displayed Choice, or

Aborts Control Panel Operation In Progress, or

Exits to Next Higher Menu Level, or

Exits Menu Mode to Default Screen

Enters Menu Mode

Same as in Menu Mode

Accepts Currently displayed Choice

N/A N/A

Same as in Menu Mode

Moves

One Line Upward Through List of Options, or

Scrolls Part of Display 1 Line Toward Top of List of Options

Same as in Menu Mode

Moves

One Line Downward through List of Options, or

Scrolls Part of Display 1 Line Toward Bottom of List of Options

continued

Table 2-1 Control Panel Button Functions

Screen Escape Enter s Note 1 t Note 1

continued

Operation 2-5

At Fault Screen

Notes:

1 There is an auto-repeat feature for the s and t buttons. When the user presses either button for more than one-half second, the control panel behaves as if the user were pressing and releasing the button about four times per second. This effect stops when the user releases the button.

2 This button is sampled during power-up while all control panel LEDs are on. If it is depressed during that time, the system updates its geometry; that is, it checks for the presence and location of all modules and remaps all media. Use this method when removing or installing a module permanently.

3 These buttons are sampled during power-up. If system clears low-power memory. Use this procedure only when low-power data is corrupted. Clearing low-power memory erases all log information, such as configuration history, error history, and statistics. In addition, the system time, date and password information is erased and must be re-entered.

MiniLibrary Base Module

Figure 2–3 shows the front panel of the MiniLibrary Base Module. The panel includes a power switch and the Control Panel, which has pushbuttons, LED indicators, and a display.

N/A Clears Soft

Errors

N/A N/A

both

are depressed during that time, the

leaner

Figure 2-3. MiniLibrary Base Module Front Panel

oad

SHR-1195

2-6 Compaq TL881 Minilibrary System Users Guide

Power Switch

The power switch controls the supply of AC power to the module. The switch is recessed into the front panel to prevent accidental power-up or power-down. Press 1 to turn the module on and press 0 to turn the module off.

Control Panel

The Base Module Control Panel (Figure 2–4) contains four LED indicators, a four–line by 20–character backlit LCD display, and four pushbuttons.

LED Indicators

The four LED indicators on the Control Panel are labeled Ready (green), Use Cleaner (yellow), Drive Fault (red), and Loader Fault (red).

■

Ready (green) – lights when the Base Module is ready to accept commands, either from the Control Panel or from the host computer via the Expansion Unit. The Ready indicator goes out when you enter the Menu Mode.

■

Use Cleaner (yellow) – indicates that either or both drives require cleaning. A cleaning operation should be done as described in Chapter 5, Regular Maintenance. When the Use Cleaner LED comes on, you can find out which drive needs cleaning by selecting Cleaning Needed on the Drive status submenu.

■

Drive Fault or Loader Fault (red) – lights when a Fault Screen appears on the LCD display. The Fault Screen is described later in this chapter. A list of Fault Symptom Codes (FSC) and Error Recovery Procedures (ERP) appears in Chapter 5, Regular Maintenance.

Operation 2-7

Ready

Use

Cleaner

Drive

Loader

Fault

Escape

Enter

SHR-1248

Figure 2-4. MiniLibrary Base Module Control Panel

Pushbuttons

The pushbuttons on the Base Module Control Panel operate the same way as the pushbuttons on the Expansion Unit Control Panel; refer to the description of the pushbuttons for the Expansion Unit.

Data Unit

Figure 2–5 shows the front panel of the Data Unit. The panel includes a power switch and the Control Panel, which has pushbuttons, LED indicators, and a display.

Power Switch

The power switch controls the supply of AC power to the unit. The switch is recessed into the front panel to prevent accidental power-up or power-down. Press 1 to turn the unit on, and press 0 to turn the unit off.

2-8 Compaq TL881 Minilibrary System Users Guide

Figure 2-5.

16–Cartridge magazine

Magazine security lock

Control panel

Figure 2-6. Data Unit Front Panel

Unlock/Open button

Locked indicator

Power switch.

SHR-1194

Operation 2-9

Control Panel

The Data Unit Control Panel (Figure 2–6) contains three LED indicators, a four–line by 20–character backlit LCD display, and four pushbuttons.

Ready

Alert

Fault

Escape

Enter

SHR-1229

Figure 2-7. Data Unit Control Panel

LED Indicators

The three LED indicators on the Control Panel are labeled Ready (green), Alert (yellow), and Fault (red).

Ready (green) - lights when the system is ready to accept commands, either

from the Control Panel or from the host computer via the Expansion Unit. The

Ready indicator goes out when you enter the Menu Mode. Alert (yellow) - this LED has no function in the Data Unit. Fault (red) – when this LED lights, a Fault Screen appears in the display. The

Fault Screen is described later in this chapter. A list of Fault Sympton Codes (FSC) and Error Recovery Procedures (ERP) appears in Chapter 5 –

Troubleshooting.

Pushbuttons

The pushbuttons on the Data Unit Control Panel operate the same way as the pushbuttons on the Expansion Unit Control Panel; refer to the description of the pushbuttons for the Expansion Unit.

2-10 Compaq TL881 Minilibrary System Users Guide

Front Panel and Media Locks

To avoid accidental interruption of system operation by entering the Menu Mode or removing cartridges while the host is accessing the system, the front panel and the media for each module may be electronically locked. When the front panel of the Expansion Unit is locked, you can only enter the Menu Mode after entering a 4-digit code. That is, when the Default Screen is displayed, pressing the enter the code. The front panel of a MiniLibrary Base Module or a Data Unit cannot be unlocked without using the Security submenu on the Expansion Unit to unlock it.

All MiniLibrary Base Module and Data Unit front panels are locked by default when connected to a Expansion Unit.

Media located in any or all modules may be locked and unlocked using the Security submenu on the Expansion Unit. When the media are locked, you can only remove media after unlocking the module from the Expansion Unit using the Security submenu.

Procedures for locking and unlocking front panels and media are described later in this chapter.

Enter button does not invoke the Menu Mode until you

Starting the System

NOTE: When powering up the MiniLibrary, power

either simultaneously with or after the other modules. If the Expansion Unit is powered on first, its inventory of modules may be incorrect, and the contents of some or all of the modules will be inaccessible to the system and to the host.

Display Messages

The display on the control panel is capable of displaying four lines of 20 characters each, to allow the use of easy-to-understand messages. Many of these messages and their functions are described in this chapter. Those displays that are described in other chapters are cross-referenced here as well.

Power-On Self Test Screen

When power is first applied to the module, a series of power-on self test (POST) diagnostics are performed. During POST execution, the model number of the module, the firmware revision, the status or result of the test in progress and the current date and time are displayed on the control panel as

shown in Figure 2–7:

must

be applied to the Expansion Unit

Operation 2-11

SHR-1343

Figure 2-8. POST Screen

Initialization Screens

After the POST is completed, the library robotics system is initialized. A series

of screens similar to similar to Figure 2–8 is displayed during this process:

SHR-1344

Figure 2-9. Initialization Screen

Default Screen

After the POST diagnostics have concluded successfully and initialization is complete, the system Default Screen for the Expansion Unit appears (Figure 2-9):

SHR-1446

Figure 2-10. Default Screen

The numbers on the second line correspond to the MiniLibrary Base Modules and Data Units that are connected to the system. Up to five MiniLibrary Base Modules and Data Units may be connected. The third and fourth lines represent the cartridge magazine in the Expansion Unit.

A rectangle will appear in each position that contains a cartridge. An underline represents an empty slot.

2-12 Compaq TL881 Minilibrary System Users Guide

Fault Screen

When a fault is detected within the Expansion Unit or the Pass-Thru

Mechanism, a screen similar to Figure 2–10 appears. When a fault is detected in one of the MiniLibrary Base Modules, the Alert

LED on the Expansion Unit control panel comes on. The Fault Screen appears on the malfunctioning MiniLibrary Base Module. At the same time, either the Drive Fault or the Loader Fault LED is illuminated on that module.

Figure 2-11. Fault Screen

The first line in Figure 2–10 shows a numerical fault symptom code (FSC). The second line shows a brief description of the error, in place of the words, ‘Error Description'. The third and fourth lines will contain a one- or two-line message describing the initial error recovery procedure (ERP) in place of the words shown in the Fault Screen.

SHR-1345

A list of the fault symptom codes (FSC) and error recovery procedures (ERP) appears in Chapter 6, Diagnostics and Troubleshooting.

MiniLibrary Base Module Default Screen

The MiniLibrary Base Modules display a different Default Screen, as shown in Figure 2–11:

SHR-1447

Figure 2-12. MiniLibrary Base Module Default Screen

The example shows a MiniLibrary Base Module in the module 1 position. The first and second lines of the Default Screen show the status of the two drives within the MiniLibrary Base Module. On line 4, a rectangle appears in each position that contains a cartridge. An underline would appear at each empty

Operation 2-13

slot. The numbers at the beginning and end of line 4 represent the numbers the system has assigned to the first and last slots of that module.

The status conditions of the drives include:

■

No Tape ■ Cleaning

■

Idle ■ Unloaded

■

Rewinding ■ Loading

■

Seeking ■ Unloading

■

Reading ■ Hard Error

■

Writing ■ In Flux

■

Erasing

The third line in a MiniLibrary Base Module tells the status of the library robotics (Loader) within the MiniLibrary Base Module. Library robotics conditions include:

■

Idle

■

Fetch/Stow

■

Taking Inventory

■

Checking Drives

■

Scanning Labels

■

Orphaned Cartridge

■

Trapped Cartridge

■

Elevator Home

2-14 Compaq TL881 Minilibrary System Users Guide

The fourth line in a MiniLibrary Base Module is the magazine map. Numbers

16-25 in Figure 2–11 represent the map numbers of the cartridge slots. In this case, we have a 10-slot magazine in the first position below the 16-slot Expansion Unit. These numbers vary with the position of the module within the system and magazine size. If no magazine is installed, line 4 says ‘No Magazine'. The boxes present on this line indicate that a cartridge is present in the corresponding slot of the magazine. An underline means that there is no cartridge present in that slot.

Selecting Control Panel Display Modes

As previously described, the POST, Initialization and Default Screens appear without operator or host intervention. The Fault Screens appear whenever a fault occurs. The screens that follow appear in response to operator actions.

The MiniLibrary Menu Structure

Figure 2–12 shows the structure of the MiniLibrary menus.

Power-Up Displays

Operation 2-15

From/To

Notes: (1) Applies to Base Module (2) Applies to Expansion Unit

* Controlled by the Security Menu

Library

DLT0

DLT1

Map Info.

Default Displays

Panel Lock*

Main Menu

Maintenance MenuShow Status MenuLoad/Unload

Clean Drive

Diagnostics Menu

Cartridge Cycle Friction Test Tach Feedback Scanner Feedback

Demo Menu

Demo 1

Flash Update

NOVRAM Update

Clock Update

Flash DLT

Flash from SCSI

Flash from Tape

Reboot Module

Fault Displays

Configuration Menu Show History Menu Security Menu

Set Data Format Menu

DLT 0 DLT 1

Set SCSI Menu

Library Parity Library Bus ID DLT0 Bus ID DLT1 Bus ID

Set Library

Mode (1)

Set Date Menu

Day Month Year

Set Baud Rate

Set Serial Number

Set Unload Mode

Set Auto Clean

Set Mail Slot (2)

Set Reserved Slots

Set Default

Scaled AT 90% 2 times

Statistics

Error History

Initial Config.

Config History

Set Element Base Menu

Transport Addr. Storage Addr. Transfer Addr.

Set Identification Menu

Vendor Ident. Product Ident.

Set Time Menu

Hours Minutes

Set Negotiation

Negotiation Mode Transfer Rate

Set Special Config.

Mode PG 1F Length Model Number

Set Unlock Code

SHR-1196-2

Figure 2-13. MiniLibrary Menu Structure

2-16 Compaq TL881 Minilibrary System Users Guide

Entering Menu Mode

IMPORTANT: When the Expansion Unit enters the Menu Mode, the Ready light goes

out. This means that the module is

with a SCSI ‘Not Ready’ until you exit the Menu Mode and the Ready light goes on.

To prevent accidental interruption of host operations, you can lock out the Menu Mode using the Security Menu. See the section entitled Security Menu, later in this chapter. When all control panels are locked, you must enter your unlock code in order to display the Main Menu. Note that the Show Status Menu of each module remains accessible. It may be displayed from the

module’s Default Screen at any time by pressing the When the Default Screen appears on the screen, you can enter the Menu Mode

by pressing the

Enter button. The Main Menu shown in Figure 2–13 appears:

offline

, and responds to all commands from the host

Escape button.

SHR-1331

Figure 2-14. Main Menu

NOTE: If the control panel has been locked, the screen shown in Figure 2–14 appears instead of Figure 2–13. You must know the unlock code for the system before you can proceed.

SHR-1347

Figure 2-15. Panel Locked Screen

When you press the Enter button, the screen shown in Figure 2–15 appears:

Operation 2-17

SHR-1348

Figure 2-16. Code Entry Submenu

Using the button and buttons, set the first digit of the unlock code. When you have set it, press the and repeat the process. When you have finished, press the the

Enter button to confirm your entry. If the code is correct, the Main Menu

Enter button to move the cursor to the second digit

Escape button, then

is displayed. If the code is incorrect, an error screen appears.

Exiting the Menu Mode

To leave the menu mode and return to the Default Screen, press the Escape button repeatedly. Each time you press the Escape button, the display moves to a higher menu level. When the Main Menu is visible, pressing the button once returns to the Default Screen. At this point, the Ready LED lights.

Escape

Navigating Through the Menu Structure

To select a submenu, move the on the display to the desired line using the

and buttons. Then press the Enter button to confirm your choice and display the submenu. The means that there are one or more additional items that can be reached by scrolling, using the

■

Load/Unload

■

Show Status Menu

■

Maintenance Menu

■

Configuration Menu

■

Show History Menu

■

Security Menu

The following sections describe the submenus that correspond to each of the Main Menu selections.

at the end of the fourth line of the Main Menu

button. The items available on the Main Menu are:

2-18 Compaq TL881 Minilibrary System Users Guide

Load/Unload Menu

The Load/Unload Menu is described later in this chapter, under the section entitled Loading and Unloading Tapes.

Show Status Menu

When you select Show Status, the menu shown in Figure 2–16 appears:

Figure 2-17. Show Status Menu

The items available on the Show Status Menu are:

■

Library

■

DLT0

SHR-1448

■

DLT1

■

. . .

■

DLTn

■

Map Info

Move the

up or down with the and buttons, then press the Enter

button to select the item.

Library Status Submenu

When you select Library, the menu shown in Figure 2-14 appears:

SHR-1350

Figure 2-18. Library Status Submenu

Operation 2-19

This screen is scrollable. The list of Library Status categories available is as follows:

■

Model Number ■ Firmware Revision

■

Date ■ Time

■

Loader Status ■ Library Configuration

■

Vendor Identification ■ Product Identification

■

Transport Address ■ Storage Address

■

Transfer Address ■ Imp/Exp Address

■

Serial Number ■ SCSI Bus ID

■

SCSI Bus Parity ■ Negotiation Mode

■

Transfer Rate ■ Unload Mode

■

Mail Slot Emulation ■ Mail Slot Count

■

Mode Page 1F Length ■ Initialize Element Status

■

Boot Version ■ Flash Type

Drive Status Menu

When you select either of the drives, the menu shown in Figure 2–18 appears:

SHR-1449

Figure 2-19. Drive Status Menu

This screen is scrollable. The list of Drive Status categories available is as follows:

Map Information Screen

When you select Map Info, the screen shown in Figure 2–19 appears. The location being reported appears on Line 1. The content of the bar code on the label, up to 8 characters, appears on Line 4.

2-20 Compaq TL881 Minilibrary System Users Guide

Figure 2-20. Map Info Submenu

The list of locations available for display on line 1 is as follows. If you do not designate any mail slots, those lines are omitted from the list.

Depending on the report for each location, Line 2 may display either ‘Empty’, or ‘Occupied’, or, if a magazine is absent, ‘Not Installed'.

Depending on the report for each location, Line 3 may display either ‘Label Valid’, or ‘Label Not Present'.

For each location reported, Line 4 will display the actual bar code on the label, up to 8 characters.

Maintenance Menu

SHR-1450

The Maintenance Menu and the options under it that are intended for operator use are described in Chapter 5, Regular Maintenance.

Configure Menu

The Configure Menu, how to use it and the options available under it are described in Chapter 3, Installation.

Show History Menu

The Show History Menu enables the operator to review the history of the system. An example of the use of the Show History Menu appears later in this chapter under the heading ‘Displaying Error Logs'. You can retrieve the configuration history, the original configuration, as well as statistics on the number of operations the library robotics and the drives have performed.

Security Menu

The Security Menu permits the operator to lock the control panel, preventing inadvertent or unauthorized access to the Menu Mode, which takes the system offline. You can display the Show Status Menu without unlocking the panel

Operation 2-21

(and without taking the system offline) by pressing the Escape button at the Default Screen.

When you select the Security Menu, the screen shown in Figure 2–20 appears:

SHR-1353

Figure 2-21. Security Menu

This screen is scrollable. The list of Security functions available follows:

■

Unlock All Panels ■ Unlock All Media

■

Lock All Panels ■ Lock All Media

■

Master Locking ■ Module 1 Locking

■

. . . ■ Module n Locking

■

Set Unlock Code

To change the unlock code, or to enable or disable the panel locking function, scroll downward by pressing the

Code'. Press the

Figure 2-22. Code Select Submenu

Enter button. The screen shown in Figure 2–21 appears:

button until the is next to ‘Set Unlock

SHR-1354

An underline cursor appears underneath the first digit. To set the first digit, press the move the cursor to the second digit, press the

button or the button until the desired number is displayed. To

Enter button. Repeat the process

for each of the four digits. Be sure to remember the 4-digit number, as you will need it in order to enter the Menu Mode. An unlock code of 0000 disables panel locking.

When you have finished entering four digits, press the

Escape button, the

screen shown in Figure 2–22 appears:

2-22 Compaq TL881 Minilibrary System Users Guide

Figure 2-23. Code Accept Submenu

Your code is shown in place of XXXX.

SHR-1355

Press the Press the

Enter button if you want to adopt the unlock code that is displayed. Escape button if you do not want to accept it. Press the Escape

button again to return to the Main Menu, and again to return to the Default Screen.

The next time you attempt to enter Menu Mode, the screen shown in Figure 2– 23 appears. You can still display the Status Menu without using the security code by pressing the

Figure 2-24. Panel Locked Screen

Escape button at the Default Screen

SHR-1347

When you press the Enter button, the screen shown in Figure 2–24 appears:

SHR-1348

Figure 2-25. Code Entry Submenu

Using the and buttons, set the first digit of the unlock code. Press the

Enter button to move the cursor to the second digit and repeat the process.

When you have finished, press the

Escape button. The screen shown in

Figure 2–25 appears:

Operation 2-23

SHR-1356

Figure 2-26. Code Validate Submenu

Press the Enter button to validate your choice. If the code is correct, the Main Menu is displayed. If the code is incorrect, an error screen appears. If you have forgotten your unlock code, contact your technical support representative for assistance.

Displaying Firmware Revision

You may display the library robotics firmware revision at any time by pressing

Escape button at the Default Screen to display the Show Status Menu. It

the appears as one of the items on the Library Status submenu of the Show Status Menu. Press Enter with the arrow next to Library and the revision is shown; press Escape to bring back the Default screen.. It is also displayed on line 2 of the POST Screen and the Initialization Screens.

Displaying Error Logs

To display the error history of the module, you need to use the Show History Menu. Access it as follows:

SHR-1357

Figure 2-27. Error History Screen

Loading and Unloading Tapes

The Load/Unload menus enable you to specify a source and a destination for a cartridge movement. As a result, you use exactly the same procedure to load and unload. To load or unload a tape from the front panel of the module, use the Load/Unload menus as follows:

2-24 Compaq TL881 Minilibrary System Users Guide

A default screen is shown in Figure 2–27. From the Default Screen, enter the Menu Mode by pressing the

Figure 2-28. Default Screen

The Main Menu shown in Figure 2–28 appears.

Figure 2-29. Main Menu

Enter button.

SHR-1446

SHR-1331

The is next to the line that reads ‘Load/Unload'. Press the Enter button to display the first Load/Unload submenu, which is shown in Figure 2–29:

SHR-1451

Figure 2-30. Load/Unload Initial Screen

In Figure 2–29, the is next to line 2 of the display. Line 2 shows the top item in a scrollable list of sources. Note that a the bottom line. This indicates that the

has appeared on the right of

button may now be used to scroll through the list, and that the top item on the list is displayed. As soon as you press the

button, three things happen:

The list scrolls down one item (only line 2 scrolls).

appears on the right of line 1 of the display. This indicates that there is

A one or more items above the item displayed on line 2.

Operation 2-25

The * at the left of line 2 disappears. This is because the * indicates the current selection or the default selection, and you have scrolled the default selection

offscreen, and haven’t yet selected an item from the list.

NOTE: The contents of the lists on line 2 and line 4 will vary as follows:

Initial Screen - ‘From’ Line

The list on line 2 in Figure 2–29 (the ‘From’ line) will include every drive and every magazine slot (including mail slots) that has a cartridge in it (you can’t get a cartridge from a slot or drive that is empty).

Initial Screen - ‘To’ Line

The list on line 4 of Figure 2–29 (the ‘To’ line) will include all of the valid destination choices, that is, drives and slots that are empty (you can’t put a cartridge into a slot or drive which already has one in it).

Scroll List - ‘To’ Line

There is another limitation on the ‘To’ list. If you have selected a drive on the ‘From’ screen, the ‘To’ list can include only slots. If you have selected a slot on the ‘From’ screen, the ‘To’ list can contain only drives.

Let us assume that you want to load the cartridge that is in Slot 4 into any available drive. Use the

button to scroll line two to Slot 4. The screen

shown n Figure 2–30 appears:

From: SLot4 To: *DLT0

SHR-1452

Figure 2-31. Load/Unload ‘From‘ Entry Screen

When you have scrolled to your desired source, press the Enter button to select it. Notice that in Figure 2–30, two changes occur in the display.

The * reappears at the beginning of line 2, indicating that you have made a selection.

now moves to line 4, indicating that you may now select a destination.

The

2-26 Compaq TL881 Minilibrary System Users Guide

From: *Slot4 To: *DLT0

Figure 2-32. Load/Unload ‘To’ Entry Screen

You can now simply press the Enter button to select DLT0 as the destination. Note that there is no are no additional choices because 1) you have selected a slot as the source, so the destination must be a drive, and 2) DLT1 already has a cartridge in it, so it cannot be a valid destination. Press the

response, the Confirmation Screen shown in Figure 2–32 appears:

SHR-1453

at the end of line 4, nor at the end of line 1. There

Enter button to select DLT0. In

SHR-1454

Figure 2-33. Confirmation Screen

As the confirmation screen indicates, to execute the load or unload, press the

Enter button. If the confirmation screen does not show your intended source

and destination, press the When you press the

Escape button to return to the ‘From’ entry screen.

Enter button, the screen shown in Figure 2–33 appears. If

the source is a drive, the word ‘Unload’ appears in place of the word ‘Load’ on line 4.

SHR-1455

Figure 2-34. Load/Unload ‘In Progress’ Screen

When the load or unload operation is finished, the Default Screen reappears.

Inserting and Removing Cartridges

When inserting cartridges, be sure that the slot you intend to use is not already reserved in the system map for a cartridge in a drive. The best way to avoid conflicts is to unload all drives, either through your host computer software or by using the Load/Unload command on the Main Menu, described in the previous section.

The tape magazine must be removed from the module in order to insert or remove cartridges. To insert or remove the magazine, the following conditions must be met.

The Magazine Security Lock (Figure 2–34) must be unlocked, using the key supplied with the module. When the Magazine Security Lock is locked, the

Unlock/Open button has no effect. If the module is installed in a reasonably

secure environment, you may elect to leave the Magazine Security Lock in the unlocked position.

Media locking on the Security Menu must be disabled. See Figure 2–20. The host computer must allow medium removal. The host computer can

enable or disable the Medium Removal command. When you press the message ‘Magazine Locked” will be displayed.

Unlock/Open button using the SCSI Prevent Allow

Operation 2-27

Unlock/Open button, the

The Expansion Unit must be ready, and not actually executing a command.

IMPORTANT: When you enter the Menu Mode, the Ready light goes out. The magazine cannot be inserted or removed unless the Ready light is on. To remove the magazine when a failure prevents the Ready light from illuminating, refer to the section entitled

Emergency Magazine Removal

2-28 Compaq TL881 Minilibrary System Users Guide

Figure 2-35. Magazine In Place Figure 2-36.

Magazine security lock

Unlock/Open button

SHR-1230

Removing a Magazine

Figure 2-37. Main Menu

Figure 2-38. Main Menu, Scrolled

SHR-1331

SHR-1363

Operation 2-29

SHR-1353

Figure 2-39. Security Menu

SHR-1364

Figure 2-40. Unlock All Media Screen

Emergency Magazine Removal

If a fault occurs that prevents removal of the magazine, turn the power off for thirty seconds. Power up while continuously pressing the to hold the button until all of the indicators on the control panel light, then go out. Release the button. The magazine may now be removed.

button. Continue

If you are unsuccessful in removing the magazine using this procedure, contract your technical support representative for further advice.

Inserting Cartridges Into the Magazine

A full magazine is shown in Figure 2–39. Insert cartridges so that the label end with the write protect switch is outward, with the write protect switch toward the bottom of the magazine. The lowest numbered cartridge slot in the magazine is closest to the handle.

2-30 Compaq TL881 Minilibrary System Users Guide

Figure 2-41. 10-Slot Tape Magazine with Cartridges Installed

Label

Slot 0

Write protect switch

Inserting a Magazine

Figure 2-42. Main Menu

SHR-1231

SHR-1331

Figure 2-43. Main Menu, Scrolled

SHR-1363

Figure 2-44. Security Menu

Figure 2-45. Unlock All Media Screen

Operation 2-31

SHR-1353

SHR-1364

Figure 2-46. Lock All Media Screen

MiniLibrary Base Module

The front panel of the MiniLibrary Base Module is nearly identical to that of the Expansion Unit. The panel includes a power switch for the module, the magazine door, the Magazine Security Lock, the Unlock/Open button with its

Locked indicator. The control panel, shown in Figure 2–4, has one more LED indicator than that of the Expansion Unit. Figure 2–45 shows the MiniLibrary Base Module front panel.

SHR-1365

2-32 Compaq TL881 Minilibrary System Users Guide

Drive

Fault

Figure 2-47. MiniLibrary Base Module Front Panel

10-Cartridge magazine

Magazine security lock

Control panel

Unlock/Open button

Locked indicator

Power switch

SHR-1195

The Magazine Security Lock, the Unlock/Open Button and the Locked Indicator LED

These features are described in Inserting and Removing Cartridges.

Tape Requirements

The MiniLibrary system uses ECMA-approved and ANSI proposed-standards DLTtape cartridges. The DLTtape cartridge is a four-inch square plastic cartridge. According to the media manufacturer, the cartridge and the medium are designed to withstand 1,000,000 passes, and to have a shelf life of 30 years when properly stored.

Cartridge Handling and Storage

A DLTtape cartridge should be stored vertically until you select it for use. Do not expose a cartridge to moisture or direct sunlight. Maintain a clean, dustfree working and storage environment.

If a DLTtape cartridge is dropped:

■

Inspect the cartridge carefully before you insert it into a MiniLibrary magazine or any drive.

Operation 2-33

■

Shake the cartridge while listening for the sound of a broken part. Any rattling sound makes a cartridge unfit for use.

■

Inspect the case for distortion or cracks.

■

Inspect the leader by opening the cartridge door as shown in Figure 2–

46. The leader should be positioned as shown in view (1), and should protrude at about a five-degree angle from the case. If the leader is out of position, do not use the cartridge; damage to the drive could result.

Under certain conditions, DLT Tape may stick to the drive read/write head during operation. Damage to media, failure of commands or batch jobs to execute, with resulting errors or hangs; failure to unload; apparent need to swap out the drive.

When tapes are stored in an environment different from that of the drive, ensure that they are acclimatized, by moving them to a location in close proximity to the drive before attempting to use them. Ideally, tapes should be allowed to acclimate for a time equal to the duration of their storage away from the drive, or 24 hours, whichever is less.

Reports have verified that sticking will occur almost immediately with older, used tapes which have been stored at 20°C and 75% humidity, when those tapes are used in a TZ87 drive kept at a higher temperature and lower humidity. High tape humidity causes sticking from HYDROLYSIS, a degradation of the tape which can be reversed by storing the tape for a while in a dry environment Test conditions (cool, damp tapes and warm, dry drives) have produced “stiction” at will, but other conditions may also cause it. Remember to acclimatize tapes before use. Long-term storage specifications are more stringent than those for shorter periods. Cartridges intended for longterm archiving shall be stored in room conditions of 23°C +/-5 (73°F +/-9 at 50% +/-10% relative humidity.

2-34 Compaq TL881 Minilibrary System Users Guide

Figure 2-48. DLT Tape Cartridge

Leader

Write protect OFF

Write protect ON

SHR-1232

Write Protection

The write protection switch of a DLT tape cartridge is also shown in Figure

2–46. To enable data recording, slide the write protect switch to the right so that no orange color is visible through the window in the write protect switch (2). To write protect the DLT tape cartridge, slide the write protect switch to the left until the orange indicator shows through the window on the write protect switch (3).

Barcode Labels

Barcode labels are included with the TL881 MiniLibrary and Expansion Unit. Additional labels can be ordered (refer to Appendix B). The label slips into the slot adjacent to the write-protect switch on each tape cartridge. The code used may be Code 39, Codebar, 2-of-9, standard 2-of-5, or interleaved 2-of-5, with a length of 8 digits. Minimum element width is 7.5 mm.

TL881 Components

There are four basic components in the TL881 MiniLibrary system:

Operation 2-35

■

The TL881MiniLibrary Base Module

■

The MiniLibrary Expansion Unit (Master)

■

The MiniLibrary Data Unit

■

The Pass-Thru Mechanism

Every Pass-Thru Mechanism has one Expansion Unit and any combination of up to eight of the remaining components stacked in a rack. The Expansion Unit can move media freely within itself and between the MiniLibrary Base Modules and the Data Units with the Pass-Thru Mechanism™.

In the MiniLibrary system, you can combine modules to provide the right combination of capacity and performance for your requirements. The architecture allows you to change or add to the mix of modules to optimize throughput, capacity, or both as your storage requirements change.

When connected as a system, the robotics in MiniLibrary Base Modules and Data Units operate from Expansion Unit commands. The host computer(s) are not dependent on the internal geometry of the system, or on the actions or capabilities of any of the slave modules. The Expansion Unit presents, to the host(s), a single SCSI medium changer device with a single SCSI Medium Transport element, several SCSI storage elements equal to the number of cartridge magazine slots, several SCSI Import/Export elements as specified by the user during configuration of the Expansion Unit, and a number of SCSI Data Transfer elements equal to the total number of drives in the system.

Storage Architecture

The MiniLibrary architecture is uniquely suited and designed for expanding storage needs. The MiniLibrary architecture enables the robotics in each of the MiniLibrary components to exchange cartridges with the Pass-Thru Mechanism, and integrates the robotics in the individual components and the Pass-Thru Mechanism into a single, high-performance library robotics system.

The MiniLibrary is easily modified – by adding modules and extending the Pass-Thru Mechanism – to adapt to expanding storage needs. You can add drives for faster performance or magazine space for greater capacity, as needed. At power-up the MiniLibrary updates the system map, signaling the host of the need for expansion.

The Expansion Unit

The Master Expansion Unit integrates the robotics in the individual modules into a single coordinated library robotics system. The Expansion Unit

2-36 Compaq TL881 Minilibrary System Users Guide

performs and maintains an inventory of all media residing in the system, including bar code data, if the modules are equipped with bar code readers. All necessary system control operations can be performed from the control panel of the Expansion Unit, as well as from the host through software. The SCSI interface for the library robotics is designed for high-speed communication with the host, and is available in standard SCSI-2, Fast SCSI-2 or Fast/Wide SCSI configurations.

In addition to system control functions, the Expansion Unit has a 16-cartridge magazine with a random access robotic mechanism. The module robotics moves cartridges between the Pass-Thru Mechanism and any of the 16 cartridge storage locations.

You can designate a magazine in one of the slave modules as a mail slot for inserting or removing one or more single cartridges, which implements the SCSI Import/Export commands.

NOTE: a magazine reserved for Import/Export service may not be used for data

storage.

The MiniLibrary Base Module

The MiniLibrary Base Module has either one or two DLT drives and a 10cartridge magazine with a random access robotic mechanism.

The Data Unit

The LXC0016 Data Unit has a 16-cartridge magazine, a random access robotic mechanism , and no tape drives. The module robotics, under control of the Expansion Unit, moves cartridges between the Pass-Thru Mechanism and any of the 16 cartridge storage locations.

SCSI Interface Configurations

The MiniLibrary system standard SCSI interfaces are SCSI-2 for systems equipped with 2000XT drives and Fast SCSI-2 for systems equipped with 4000 drives. Both of these use high-density 50-pin D-series connectors. Also available, in systems equipped with 7000 series drives, is a Fast/Wide SCSI interface using high-density 68-pin D-series connectors.

SCSI Bus Performance Considerations

The data transfer rate of the DLT MiniLibrary is dependent on the type of drives and on the SCSI bus configuration. The bandwidth of the SCSI bus is limited.

Drives

With a standard SCSI interface, modules equipped with the DLT20/40 series can provide a maximum sustained native transfer rate of 1.5 MB/second. With both drives operating, the DLT20/40 native transfer rate is 3.0 MB/second. The rates for compressed data are the native rates multiplied by the compression factor, which depends on file content, but averages approximately 1.7.

Internal Cabling Configuration

The differential MiniLibrary system is wired in an independent-bus SCSI configuration: the robotics and each of the drives has its own SCSI bus. SCSI jumpers are available for those applications requiring that some combination of drives and robotics are daisy-chained to a single SCSI bus.

Operation 2-37

The single-ended table-top unit has the robotics and first DLT drive daisychained internally to shorten the total internal cable length. The second drive is on an independent bus.

Bus Length Limitations

The single-ended SCSI-2 bus is limited to 6 meters in length, and the singleended Fast SCSI-2 bus is limited to 3 meters overall length. In contrast, differential SCSI-2 and Fast SCSI-2 buses may be up to 25 meters long.

Physical Configuration

All modules in a MiniLibrary system must be mounted in a rack except for the table top module version. When a system is ordered, all the modules are supplied in a rack-mount configuration. Modules cannot be operated alone except for the MiniLibrary Base Module, which can be converted to operate as a free-standing 10-slot library.

2-38 Compaq TL881 Minilibrary System Users Guide

System Expansion

A DLT MiniLibrary system can be expanded in capacity or performance or both by adding or removing components. Associated with each component is a section of the Pass-Thru Mechanism. The MiniLibrary Storage system firmware integrates the robotics in the individual modules and the Expansion Unit Pass-Thru Mechanism into a single high-performance library robotics system.

Free-Standing MiniLibrary Base Modules Conversion

You can add existing MiniLibrary Base Modules to your system by changing firmware, resetting internal jumpers, removing the pass-through cover plate, and in some cases converting from desktop to rack mount. These tasks should be performed by qualified service personnel. Contact your technical support representative for instructions.

Features

Figures 2–47 through 2–52 show some of the external features of the Expansion Unit, the MiniLibrary Base Module, and the Data Unit.

Figure 2-49. Expansion Unit and Data Unit Front View

16-Cartridge magazine

Magazine security lock

Control panel

Unlock/Open button

Locked indicator

Power switch

SHR-1194

Operation 2-39

lean

riv

Loa

der

Fault

Figure 2-50. MiniLibrary Base Module Front View

Control Panel

Display

The backlit 4-line by 20-character control panel display provides a highly intelligible presentation of drive and loader status, menu choices and error messages. The scrolling feature greatly expands the amount of information available to the operator. In the MiniLibrary Expansion Unit, status information is available for the entire system. The slave modules display other information as needed for localizing malfunctions.

10-Cartridge magazine

Magazine security lock;

Unlock/Open button

Locked indicator

Control panel

Power switch

SHR-1195

Magazine Security Lock

The Magazine Security Lock is a key-operated switch on the front panel of each module. It can be used to prevent inadvertent removal of the cartridge magazine.

2-40 Compaq TL881 Minilibrary System Users Guide

Power Supply

The AC Power switch is located on the front panel of the module. The autoranging power supply will adjust automatically to either of two operating voltage ranges. The ranges are 100-120 VAC and 200-240 VAC. The power supply is capable of operating at 50 or 60 Hz without any adjustment or modification. AC power is supplied to the power supply by a single IECcompatible socket which can be connected to any properly grounded outlet.

Tape Cartridge Magazines

The ten-cartridge and sixteen-cartridge magazines are removable from the front panel, but may be protected from tampering by any of three means: 1) a key-operated Magazine Security Lock which must be unlocked before the magazine can be removed, 2) an electronic combination lock operated by using buttons on the Expansion Unit control panel, and 3) issuance by the host

of a SCSI ‘Prevent Medium Removal’ command. The rugged carbon-fiberreinforced polymer magazine fits into an extruded track, which assures precise positioning with respect to the library robotics. A ten-cartridge tape magazine is shown in Figure 2–49.

Figure 2-51. MiniLibrary Base Module 10-Cartridge Magazine

Slot 0

Front label slide slot

Barcode label slide slot (not used)

Slot 9

Operation 2-41

SHR-1226

Figure 2-52. Expansion Unit Rear View

Pass-Thru mechanism

motor drive Power connector

4 5

Slave module robotics interface connectors

Library robotics SCSI interface Flash connector

SHR-1227

2-42 Compaq TL881 Minilibrary System Users Guide

SHR-1228

Figure 2-53. MiniLibrary Base Module Rear View

SCSI interface

Expansion unit interface

Power connector

Fan

The differential unit shown in Figure 2–51 has 6 ports. A single-ended version has four ports.

SHR-1321

Figure 2-54. Data Unit Rear View

Power connector

Expansion unit interface

Integral Fan Cooling

A single forced-air fan is mounted inside each module to provide optimum cooling for critical parts, and to prevent the drive and robotics electronics, motors and power supply from overheating.

Library Robotics

The DLT MiniLibrary system features library robotics that can load any of the cartridges stored in any magazine in the system into any of the DLT tape drives, moving cartridges among as many as nine modules within the DLT MiniLibrary system. The robotics design utilizes the Compaq Library Robotics, which is known for ruggedness and reliability.

Bar Code Reader

The optional bar code reader may be mounted on the cartridge shuttle in each module. It reads bar code labels attached to each cartridge, and maintains the bar code data in memory as part of the library System Map. Upgrade kits to add the bar code reader are available for the MiniLibrary Expansion Unit, the MiniLibrary Base Module and the Data Unit.

Operation 2-43

Installation Overview

This chapter describes the complete MiniLibrary System installation process from planning and parts identification to mechanical installation, cabling, and configuration.

Introduction

There are three basic areas for installing a MiniLibrary System: Mechanical installation; cabling; and configuration.

Chapter

Installation

Mechanical installation consists of:

■

Assembling the Pass-Thru mechanism - the two-module version is factory assembled.

■

Installing the Expansion Unit, the MiniLibrary Base Module(s) and the Data Units. Instructions are provided for all rack types: Compaq

Cabinet, EIA/RETMA Standard 19” cabinet, and StorageWorks SW500, SW600, or SW800 Metric cabinet

■

Installing the Pass-Thru mechanism in the rack

Cabling consists of:

■

Interconnecting the Data Units and MiniLibrary Base Modules with the Expansion Unit

3-2 Compaq TL881 Minilibrary System Users Guide

■

Connecting the Expansion Unit to the Pass-Thru mechanism motor

■

Connecting the MiniLibrary Base Module drive SCSI buses to host SCSI interfaces

■

Connecting the Expansion Unit to a host SCSI interface

■

Terminating the buses properly

Configuration consists of:

■

Using the Configure Menu to customize the configuration options to your particular application

The remainder of this chapter describes each of these steps.

Planning Your Installation

The MiniLibrary System is designed for mounting in a Compaq Cabinet, StorageWorks SW500, SW600, SW800 or a standard 19-inch EIA/RETMA equipment rack with a depth of 24 to 30 inches. Each module is shipped with EIA/RETMA slides installed. Additional hardware for mounting in Compaq and SW500, SW600, and SW800 cabinets is included

Every Compaq MiniLibrary System includes:

■

One Expansion Unit

■

One Expandable Pass-Thru Mechanism

■

One to five MiniLibrary Base Modules or Data Units, each with one or two DLT20/40 drives

The Expansion Unit has 16 slots and no drives, and serves as controller of the MiniLibrary System. The MiniLibrary Base Modules each have 10 slots plus one or two drives. The Expansion Unit, the Data Unit and the MiniLibrary Base Module(s) each occupy 7 inches of rack space height.

The Pass-Thru mechanism is composed of a motor drive assembly plus sections of track whose combined length is equal to the combined heights of the Expansion Unit plus the MiniLibrary Base Modules. One extension section of track is needed for the installation of each additional MiniLibrary module.

Positioning the Modules

The Expansion Unit must be mounted at the top of the stack, which places its control panel at a convenient height. The control panels of the Data Unit MiniLibrary Base Modules are of secondary importance, as they serve mainly

to help localize system failures. When installed, the motor drive assembly of the Pass-Thru mechanism is directly behind the Expansion Unit.

Data Units and MiniLibrary Base Modules may be installed anywhere below the Expansion Unit, in any order. There may be a slight performance advantage in making the MiniLibrary Base Modules contiguous, but gaps are permitted. The size of a gap is limited by the fact that each gap must be

bridged by some number of 7” Pass-Thru mechanism track sections. For safety, available cover plates should be installed on all Pass-Thru mechanism sections which are not connected to MiniLibrary System modules.

additional Pass-Thru mechanism track segments and cover plates equal to the length of the gap.

Mechanical Installation

Assembly of the Pass-Thru mechanism requires experience working with moderately complex mechanisms, and the ability to follow directions carefully.

Installation 3-3

Identifying the Parts of the Pass-Thru Mechanism

Locate and identify the Pass-Thru mechanism internal and external parts. The Pass-Thru mechanism is made up of the following external parts, shown in Figure 3-1:

3-4 Compaq TL881 Minilibrary System Users Guide

Figure 3-1. Pass-Thru Mechanism External Parts

Motor drive section

Extension sections

Support brace

Left and right rack slide

extensions

Pass-Thru base with idler

Angle brackets

pulley

Tie bars

L-shaped nut plates

SHR-1233

NOTE: The slide extensions, 6 in Figure 3-1, are not enclosed with the Pass-Thru mechanism parts. They are supplied as part of the installation hardware for the slides that come with each of the modules.

Follow the instructions in the section entitled Mechanical Installation of the Expansion and MiniLibrary Base Modules. After the rack slides and the

MiniLibrary Base Modules are in place, and after the Pass-Thru mechanism is assembled, you will install the Pass-Thru mechanism in the rack by attaching

the support braces L-shaped nut plates

to the slide extensions 6 using the angle brackets 7 and

The internal parts you will need to recognize during assembly are shown in Figure 3-2 Figure 3-3.

Figure 3-2. Pass-Thru Mechanism Car (Front View)

Installation 3-5

SHR-1234

3-6 Compaq TL881 Minilibrary System Users Guide

Figure 3-3. Car Rear View Showing Belt Block

Belt block

Captive screws

SHR-1235

The belt block comes fastened to the back of the car with two captive screws. Carefully note the orientation of the block with respect to the car, as shown in Figure 3-3.

Orientation of Parts During Assembly

To determine the orientation of an extension section, examine the flanges on the edges of the section, and note that they are dissimilar. Position the section so that its orientation matches that of the elevator base.

Figure 3-4 shows a typical Pass-Thru mechanism assembly. The motor drive section always goes on top, and the base section with the idler pulley always goes on the bottom. Extension sections are mounted between the motor drive section and the base section. All sections are joined together with tie bars. For systems up to four modules, two support braces are needed, one attached to the motor drive and one to the base section. For larger systems, a third support brace should be mounted near the center of the Pass-Thru mechanism.

Preparing to Assemble the Pass-Thru Mechanism

You will need a clean, flat work area such as a table or work bench. The surface should be long enough to support the full height of the Pass-Thru

Installation 3-7

mechanism. The height is equal to the height of the stack of modules in your system plus any gaps you intend to include in the stack. Use the following procedure to assemble your Pass-Thru mechanism.

Assembling the Pass-Thru Mechanism

In most cases, you have received a pre-assembled Pass-Thru mechanism. If its length is correct for your system, turn to the section entitled Mechanical Installation of the Expansion and MiniLibrary Base Modules and continue on to the end of the chapter. If you need to add sections, please take a few minutes to read this section and the section entitled Installing the Belt, before proceeding to Adding to an Existing Pass-Thru Mechanism.

NOTE: References to left and right refer to the position of the part when the Pass-Thru mechanism is assembled and mounted in the rack, as viewed from the front of the rack.

Refer to Figures 3-1 and 3-4.

1. Place the base section, with the inside facing down, overhanging the

right end of the work area, with the bottom plate of the section toward the right.

2. Place each of the extension sections, with the inside facing down, in a

row aligned edge-to-edge beginning with the base section. The bottoms of the sections should be toward the right. Omit the motor drive at this time.

3. Center one of the support braces across the rear of the base section over

the holes on the rear surface of that section.

4. Insert two M4 x 20 Phillips sems screws through the holes in the support

brace into the holes in the base section, and tighten.

3-8 Compaq TL881 Minilibrary System Users Guide

Figure 3-4. Pass-Thru Mechanism Assembled

Support brace

Motor drive section

Extension section

Tie bar

Base section

SHR-1236

Place pairs of tie bars so that they straddle all of the joints where sections come together. Be sure that the beveled edge is toward the inside corner of the sections.

5. Install two M3 x 20 mm Phillips sems screws through each tie bar into

the threaded holes in the flanges of the extrusion sections. Tighten finger tight only. Insert two M3 x 20 mm sems screws through each tie bar into the side of the extrusion sections and finger tighten.

6. Firmly press the neighboring sections together while tightening the two

M3 x 20 mm screws through each tie bar into the flanges of the sections. Alternately tighten the screws into the flanges and those into the sides of the extrusions to ensure that each tie bar is drawn into the corner of the extrusion.

IMPORTANT: Be careful not to overtighten these screws.

7. Inspect the joint to see that the sections are well aligned, with minimal

irregularities and gaps.

8. Repeat steps 6, 7, and 8 for each pair of sections. It may be necessary to

use suitable blocks to support the row of sections so that neither the motor housing nor the bottom flange of the base section touches the work surface while you are connecting the motor drive section.

9. Center one of the support bars across the rear of the motor drive section

over the holes on the rear surface of that section.

10. Insert two M4 x 20 Phillips sems screws through the holes in the support

brace into the holes in the motor drive section, and tighten.

11. Go to the next section, Installing the Belt.

Installing the Belt

Installation 3-9

Refer to Figures 3-5 through 3-9.

1. Turn the assembled Pass-Thru mechanism over so that the motor points

upward.

2. Referring to Figure 3-6, locate the tensioner ramp in the base section.

Compress the spring until the hole in the tensioner ramp is aligned with a hole in the base section. Insert an 0.050” Allen wrench or a paper clip

through the holes. This sets the idler pulley for zero belt tension.

3-10 Compaq TL881 Minilibrary System Users Guide

3. Locate the length of toothed belt that was enclosed with the extension

section.

Belt Length for Various System Sizes

Number of Modules Length of Belt

2 27 inches 3 41 inches 4 55 inches 5 69 inches 6 83 inches

Table 3-1

SHR-1237

Figure 3-5. Threading the Belt through the Drive Section

4. Refer to Table 3-1 for the required belt length for your system. After

double-checking the length specified, cut the belt between teeth.

5. With the toothed side of the belt toward you, position the right end of

the belt about halfway along the Pass-Thru mechanism.

6. Referring to Figure 3-5, thread the left end of the belt counter-clockwise

around the motor drive pulley.

Installation 3-11

7. Referring to Figure 3-6, thread the belt from the motor drive counter-

clockwise around the idler pulley and back to the right end.

8. Holding the ends of the belt as shown in Figure 3-7, the two ends should

be touching or very slightly overlapping.

Figure 3-6. Threading the Belt through the Base Section

SHR-1238

3-12 Compaq TL881 Minilibrary System Users Guide

SHR-1239

Figure 3-7. Checking Belt Length

Figure 3-8. Belt Block With Belt In Place

Belt

Gap visible

SHR-1240

Block

Figure 3-9. Aligning the Captive Screws With the Block

Press down

Captive screws

Installation 3-13

SHR-1198

9. Loosen the four screws that hold the belt retaining plates to the block.

Slide the ends of the belt under the plate until they engage the teeth on the block. Both ends of the belt should be visible through the gap between the plates as shown in Figure 3-8. Set the belt so there is only a

small space between the ends of the belt (approximately 1/32”).

10. Tighten the four screws that hold the belt retaining plates.

11. Pull out the paper clip previously installed in the base section. This

applies the proper tension to the belt.

12. Locate the two captive screws in the car. Screw them backward

approximately one thread into the bracket in the car so they are held in an upright position.

13. Position the belt block at least six inches from the motor drive pulley.

14. Locate the spring-loaded wheels of the car. Referring to Figure 3-9,

engage the spring-loaded wheels in the track, while positioning the car so the captive screws are directly over the holes in the belt block.

NOTE: Figure 3-9 omits the door on the car for clarity.

Do not remove the door

3-14 Compaq TL881 Minilibrary System Users Guide

15. To steady the belt block, grasp the belt several inches from the block

and push toward the back of the track until the block is pressed firmly against the back of the track. While holding the belt with one hand, compress the springs and swing the car downward until the remaining wheels are aligned with their groove in the track.

16. While continuing to press the belt block against the back of the track,

release the car so that the stationary wheels engage their groove in the track.

17. While continuing to press the belt block against the back of the track,

begin to tighten the captive screws. When both screws are partially threaded into the belt block, release the belt and finish tightening the screws. Be sure that the block is fully seated against the bracket on the car. Close and secure the door on the car.

18. Using nylon button rivets, install covers over any exposed Pass-Thru

mechanism sections that are not covered by modules.

NOTE: See Appendix E,

19. Proceed to the section entitled Mechanical Installation of the Expansion

Additional Information on Pass-Thru Section Covers.

and MiniLibrary Base Modules.

Adding to an Existing Pass-Thru Mechanism

Before reading this section, it may be helpful to familiarize yourself with the parts and procedures by reading the two preceding sections. To add to an existing Pass-Thru mechanism, you must first partly disassemble it, then make the necessary changes as described in the preceding sections. Use the following procedure for disassembly.

1. Locate the covers over the drive motor section and the base assembly.

Note that the covers are held in place by nylon button rivet fasteners. Using a suitable thin-bladed tool, pry up the cover until the fasteners can be removed. Set the covers aside, and save the fasteners for re-use.

2. Place the Pass-Thru mechanism on a suitable work surface with the

motor at the left and pointed upward. Referring to Figure 3-9, open the door of the car to gain access to the captive screws. Do not remove the door. Loosen the captive screws until they are disengaged from the belt block.

3. Grasp the closed side of the car and pull it toward you so as to compress

the springs underneath the car. When the wheels on the closed side are clear of the track, lift the car from the track and set it aside.

Installation 3-15

4. Referring to Figure 3-6, locate the tensioner ramp in the base section.

Compress the spring until the hole in the tensioner ramp is aligned with a hole in the base section. Insert an 0.050” Allen wrench or a paper clip

through the holes. This sets the idler pulley for zero belt tension.

5. Referring to Figure 3-8, loosen the four screws on the belt block far

enough to pull the ends of the belt free of the block. Pull the belt free of the motor drive assembly and the base section and set the belt aside.

6. Turn the Pass-Thru mechanism over and support it so that neither the

motor nor the flange at the bottom of the base assembly is touching the work surface.

7. Referring to Figure 3-1 and Figure 3-4, remove the eight screws holding

a pair of tie bars in place. Separate the Pass-Thru mechanism at that joint.

8. You may now add sections as needed and install a new belt as described

in the sections entitled Assembling the Pass-Thru Mechanism and Installing the Belt.

Mechanical Installation of the Expansion and MiniLibrary Base Modules

The Expansion Unit and MiniLibrary Base Module(s) may be rackmounted in either a Compaq rack, a standard 19” EIA/RETMA rack (with a depth of 2430”) or a StorageWorks (SW500, SW600, or SW800) metric rack using metric conversion brackets. Both rack types require two initial steps:

1. Separating the rack-slides.

2. Attaching the mounting-brackets.

This section describes these common rackmount instructions, followed by rack-specific rackmount instructions. The cabling and configuration

procedures for all rackmounted MiniLibraries are described in the section entitled Interfaces and Cabling.

Follow the directions in the shipping container to unpack the module(s). Save the packing materials for re-use in case you need to return the module(s) for repairs.

The Expansion Unit and the MiniLibrary Base Module come with the basic RETMA/Metric slide rack set installed on either side. Note that the Compaq rackmount kit is packed with the unit. The slide is attached to the MiniLibrary Base Module enclosure by means of three screws through the inner slide. Remove the packing tape from the slides, and separate each set of slides as follows:

3-16 Compaq TL881 Minilibrary System Users Guide

Rack Slide Separation:

1. Refer to Figure 3-10. Pull the outer slide toward the rear, along with the

intermediate slide until the inner slide lock engages the intermediate slide.

SHR-1241

Figure 3-10. Separating a Rack Slide

Inner slide lock

2. Continue to pull the outer slide towards the rear until the outer slide lock

engages the intermediate slide. Press down on the inner slide lock to permit the intermediate slide to continue to move toward the rear. Continue to move the outer and intermediate slides toward the rear until they are separated from the inner slide.

3. Identify and orient the parts of the slides and hardware needed for your

specific rack type. Figure 3-11 shows the parts required for Standard EIA/RETMA rackmounting and Figure 3-12 shows the parts for rackmounting into a StorageWorks metric rack.

Installation 3-17

NOTES: All of the screws, washers, nutplates and/or metric conversion brackets required

for rackmounting in either cabinet type are supplied with the Expansion Unit and MiniLibrary Base Module. You will need a #2 Phillips screwdriver and a flathead screwdriver. The left and right slides are alike, so there is no risk of confusing the parts on reassembly. The

front of the cabinet, and front rails

exposed (typically opposite from the main power source location). The main power source location thus becomes the

rear of the cabinet

in this text refers to where the

, and where the

rear rails

module face

exist.

will be

4. Loosely assemble a mounting bracket to each outer slide, using two 10-

32 screws with washers and a nutplate for each. Select slots in the mounting brackets so the length of the assembly equals the distance between the front and rear rails of the rack.

5. Locate the screw holes in the front and rear rails of the cabinet or

equipment rack where the drive is to be installed.

CAUTION: The cooling fan at the rear of the drive must not be obstructed when the drive is installed in the rack. It is advisable to allow two inches of clearance behind the rear panel of the module.

6. From this point, the instructions vary depending on cabinet type, and

you should proceed as follows:

q Refer to the Compaq Rackmounting Template, which is included

with each module.

q EIA/RETMA Cabinet Rackmounting - Refer to the section entitled

Rackmounting in a Standard (19”) EIA/RETMA Cabinet

q StorageWorks Metric Rackmounting - Refer to the section entitled

Rackmounting in a StorageWorks (SW500, SW600, or SW800) Metric Cabinet

3-18 Compaq TL881 Minilibrary System Users Guide

Rackmounting in a Standard 19” EIA/RETMA Cabinet:

These procedures assume that you have already separated the slide racks and attached the mounting brackets to the slides as described in the beginning of this chapter. Next:

1. Fasten each outer slide behind the front rail of the rack using two 10-32

low-profile screws with washers and one nut plate. Two 10-32 clip nuts are provided to engage the captive screws on the front panel.

2. Fasten each of the mounting brackets to the front of the rear rail of the

rack using two 10-32 screws and one nut plate.

3. Tighten the screws installed in step 4 of the previous section.

4. If they are not already locked, pull the intermediate slides toward the

front (out of the rack) so that they lock in the extended position.

SHR-1430

Figure 3-11. Rack Slide Parts for Standard 19” EIA/RETMA Rackmounting

Outer slide

Intermediate slide

Inner slide (attached to

module) Lock tab

WARNING: Step 5 should be performed by two people. Make certain that when the module is fully extended that a force of 20% of the

rack weight, but not more than 57 lb. Applied in any direction but upwards does not cause the rack to overbalance.

10-32 screws

10-32 low-profile screws

Mounting bracket

Nut plate

Installation 3-19

5. In front of the rack, lift the module to its installed height. Engage the

inner slides mounted on the module with the intermediate slides protruding from the rack, and slide the module toward the rack until the inner slide lock engages the intermediate slide. This leaves the entire module protruding from the rack, locked in position, supported by slides.

6. Press inward (toward the module) on each of the inner slide locks to

permit the intermediate slides to move toward the rack.

7. Slide the module in and out several times, ensuring that the inner and

outer slide locks engage, and that the module does not bind against the slides.

8. If binding occurs, loosen the four screws that secure the slides to the

front rails and the four screws that secure the slides to the rear rails.

9. If necessary, repeat steps 8 and 9 until the module does not bind against

the slides.

10. If the rails on your rack are not threaded, install a clip nut on each front

rail at the height of the captive screws on the front panel of the MiniLibrary Base Module. If the rails on your rack are threaded, skip this step.

11. Slide the MiniLibrary Base Module into the rack, and tighten the captive

screws.

12. Once you have securely installed the MiniLibrary into the standard rack,

proceed to the section entitled Interfaces and Cabling.

Rackmounting in a StorageWorks (SW500, SW600, or SW800) Metric Cabinet

These procedures assume that you have already separated the slide racks and have attached the mounting brackets to the slides as described in the beginning of this chapter.

You are now ready to install the metric conversion brackets supplied with the MiniLibrary Base Module. These adapter brackets are designed to mount 4U

high (IU=1.75”) RETMA modules into a metric rack. The brackets maintain the 4U high unit-to-unit spacing on a metric rack which enables the Pass-Thru system to work properly.

3-20 Compaq TL881 Minilibrary System Users Guide

2 1

2 x 968312-1014 x 968313-101

4 3

2 x 968319-101 4 x 968320-101

2 x 213164-108 2 x 972629-132

Figure 3-12. Parts List for StorageWorks Metric Rackmounting

Outer slide

Intermediate slide

Inner slide

Lock tab

Rear

Front

Mounting bracket

Nut plate;

or 2nd modules from top (units 1 and 2)

For 1

For 3

or 4th modules from top (units 3 and 4)

NOTE: Brackets for modules 5 and 6 are not shown in Figure 3-12.

2 1

4 3

SHR-1243

WARNING: The cooling fan at the rear of the drive must not be obstructed when the drive is installed in the rack. It is advisable to allow two inches of clearance behind the rear panel of the module.

Make certain that when the Module is fully extended that a force of 20% of the rack weight, but not more than 57 lb. applied in any direction but upwards does not cause the rack to overbalance.

Metric Conversion Bracket Description and Identification:

1. Refer to Figure 3-12 to identify and take inventory of the metric

conversion hardware included in your metric rackmount kit.

2. Determine where the module you are installing is going to be located

relative to the top module.

a. If the module you are installing is going to be located on the top of

the stack or the second from the top (unit 1 or 2), the parts which you will need to install this module are:

2 pieces 968312-101

Installation 3-21

4 pieces 968313-101

b. If the module you are installing is going to be located third or fourth

from the top (unit 3 and 4), the parts which you will need to install this module are:

2 pieces 968319-101 4 pieces 968320-101

c. If the module you are installing is going to be located fifth or sixth

from the top (unit 5 and 6), the parts which you will need to install this module are:

2 pieces 968608-101 4 pieces 968609-101

d. Sort out the appropriate adapters for your application. The part

number is stamped in the middle of the part for identification.

3. Next to each mounting hole in the bracket, numbers are stamped which

correspond to the module number. If you are installing the first module for example, mount the flat head screws (P/N 213164-108) through the holes marked #1.

Metric Rackmount Procedure:

1. Refer to Figure 3-13, Metric Rackmount Installation Layout. Mount the

appropriate metric conversion bracket to both ends of the slide using the 10-32 nuts provided in the slide kit. Do this for both the left and right slide assembly. For modules 1 and 2, use P/N 968313-101. For modules 3 and 4, use P/N 968320-101; for modules 5 and 6, use P/N 968609-101 Make sure that these brackets are oriented so that the numbers are right side up in all corners.

2. Mounting the bracket/slide assembly to the StorageWorks cabinet:

If installing the first module, select a mounting location:

a. Mount each slide/bracket assembly to the rack by aligning the two

mounting holes marked #1 to holes on the rack. Start by mounting the slide/bracket assembly to the rear of the StorageWorks first. Hold the bracket/slide assembly in place with one hand, fasten a mounting screw to the holes marked #1.

b. To mount the front bracket, place bracket (P/N 968312-101) in front

of the rack with the holes marked #1 aligned to the holes on the rack.

3-22 Compaq TL881 Minilibrary System Users Guide

c. Extend the slide/bracket assembly forward to mate with the rack.

Align the holes marked #1 on the slide/bracket assembly with the hole #1 on the front bracket and fasten two mounting screws through the two #1 holes.

d. Be careful to mount all four brackets at the same height. You can use

a ruler or count holes to achieve this.

e. Tighten all four corners and the slide extension.

Procedure for installing modules 2, 3, 4, 5 or 6:

a. Each unit is 7 inches high. To locate the mounting location of the

next bracket/slide assembly, use a ruler to measure 7 inches vertical distance of the protruding stud from the bracket above to the stud of the bracket which is to be installed. The mounting holes marked for the number of the module being installed should automatically line up with the rack holes.

b. Using mounting screws (P/N 213164-108), mount the slide bracket

assembly using the two mounting holes marked 2, 3, 4, 5 or 6 to mount the second, third, fourth, fifth, or sixth module respectively. Start by mounting the slide/bracket assembly to the rear of the StorageWorks cabinet. Hold the bracket/slide assembly in place with one hand, fasten the mounting screw to the bracket holes marked with a number that corresponds to the module number.

c. Be careful to mount all four brackets at the same height. You can use

a ruler or count the hole numbers to achieve this.

d. Tighten all four corners and the slide extension.

You are now ready to install the Pass-Thru mechanism in the rack as described in the section entitled Installing the Pass-Thru Mechanism in the Rack.

2 1

1 2 1

Figure 3-13. Metric Rackmount Installation Layout

Attached mounting bracket

968313-101

Rear rail of StorageWorks

metric rack (attach this end first)

Nut plate;

Lock tab

Outer right side

968313-101

Front rail of StorageWorks

metric rack (where MiniLibrary Base Module face will reside

968312-101

Threaded post for thumbscrew

Installation 3-23

2 1

SHR-1244

IMPORTANT: See Appendix E,

Information on Pass-Thru Section Covers

Installing the Pass-Thru Mechanism in the Rack

1. If you have not previously done so, install the angle brackets on the rack

slide extensions of the top and bottom modules, using one 10-32 screw and an L-shaped nut plate for each angle bracket. The L-shaped nut plates should hang from the top of the slide extensions on the outside.

Place the angle brackets so the front edge of the vertical part is 15/16” behind the rear edge of the slide body, as shown in the inset in Figure 3-

14.

2. Referring to Figure 3-14, position the Pass-Thru mechanism against the

back of the installed modules so that the support braces rest on the previously installed angle brackets. Install an M4 x 20 mm screw and washer through the rear hole in each angle bracket into the support braces. Do not tighten.

3-24 Compaq TL881 Minilibrary System Users Guide

3. Look closely at the right flange of the Pass-Thru mechanism (left side as

viewed from the rear of the rack) as shown in the inset in Figure 3-14. At the top module, position the Pass-Thru mechanism horizontally so that the edge of the flange fits exactly into the slot on the rear of the chassis of the top and bottom modules.

15/16"

SHR-1245

Figure 3-14. Installing the Pass-Thru Mechanism in the Rack

4. Ensure that the bottom edge of the Pass-Thru mechanism motor drive

section is flush with the bottom surface of the module chassis. If necessary, adjust the vertical position of the angle brackets.

5. Repeat steps 3 and 4 at the bottom module. Tighten all of the screws that

hold the Pass-Thru mechanism to the angle brackets while ensuring that:

6. The Pass-Thru mechanism is centered horizontally, as indicated by the

flange engaging the slot on the top and bottom modules, and

7. It is centered vertically, as indicated by the bottom of the bottom of the

Pass-Thru mechanism being flush with the bottom of the lowest module, and

8. The Pass-Thru mechanism is pressed firmly against the backs of the top

and bottom modules.

9. One by one, push the remaining modules into place and tighten the

captive screws. In each case, ensure that the module does not bind against an adjacent module, that clearance between modules is evenly divided between top and bottom, and that the flange on the Pass-Thru mechanism engages the slot on the back of the module.

Installation 3-25

10. If binding occurs, or if the module is not centered on the Pass-Thru

mechanism, loosen the four screws that secure the slides of the binding module to the front rails and the four screws that secure the slides to the rear rails, reposition the slides, then retighten the screws.

11. If necessary, repeat steps 6 and 7 until the module does not bind against

the slides or against adjacent modules.

12. Repeat steps 6, 7, and 8 for all of the remaining modules.

Interfaces and Cabling

Refer to Figure 3-15. The connections required depend on the type of module. The Expansion Unit always has the SCSI connection to the host for the library robotics. MiniLibrary Base Modules have a separate SCSI connection to the host for each drive*, but the SCSI connectors for the robotics should not be used. The portion of the library robotics that is located in the MiniLibrary Base Modules is controlled by the Expansion Unit through a cable connected to the Expansion Interface connector on each module. Each module has a separate AC power connection.

*IMPORTANT: In principle it is possible to daisy-chain the SCSI connections for multiple drives, to save SCSI controllers. Compaq strongly recommends against this practice because it may severely limit the data throughput performance and reliability of the library.

3-26 Compaq TL881 Minilibrary System Users Guide

Figure 3-15. Expansion Unit SCSI Connectors and Cables (Fast/Wide SCSI Shown)

Pass-Thru mechanism motor cable

Power cable

Robotics cables to Base Modules

SCSI cable

Diagnostic connector

SHR-1197

Pass-Thru Mechanism Motor Cable

The Pass-Thru mechanism motor cable is 36 inches long and has a male DB15 connector on each end. Connect the cable from the connector on the motor housing to the elevator connector on the Expansion Unit.

Control Cables

Connect each MiniLibrary Base Module to the Expansion Unit using one of the cables with a DB-9 male connector at the base end and a DB-9 female at the Expansion Unit end. A cable is required for each MiniLibrary Base Module.

NOTE: Any of the control cables may be connected to any of the DB-9 connectors on the back panel of the Expansion Unit. The Expansion Unit determines the location of each module during power-up tests.

Power Cord

The detachable AC power cord is a standard grounding AC cord which attaches to an IEC-compatible connector on the rear panel. Connect a cord to the connector on each module, and connect the other end to a reliably grounded AC outlet or rack power outlet.

Installation 3-27

To maintain safety compliance, use a power cord with a suitable rating that is approved for the country in which the product is used. In the USA, cords must be UL listed, in Canada, CSA certified, and in Europe use a Harmonized cord marked <HAR> or a nationally certified cord. Compaq specified power cords are available as part of the associated TLTL881 Country Kits (Ordered separately.)

SCSI Interfaces

MiniLibrary Modules come with a differential Fast SCSI and one or two DLT20/40 drive(s). FastSCSI is available as differential or single-ended, and uses two parallel female high-density 68-pin D-Series connectors per bus. Fast SCSI cables and terminators are secured to the connectors by jackscrews.

NOTE: Compaq strongly recommends that you use differential controllers and highquality SCSI cables to ensure the highest performance of your MiniLibrary. Bus errors caused by excessive length or poor quality cables can significantly degrade performance and reliability.

In the MiniLibrary Base Module, each drive is wired to an independent bus with a pair of SCSI connectors. Because it can be used in free-standing applications, the MiniLibrary Base Module has a pair of SCSI connectors for

that module’s library robotics. The library robotics SCSI interface should not be connected when installed in a system with an Expansion Unit. The

Expansion Unit controls the library robotics for all of the modules in the system. It has a single SCSI bus, with a pair of SCSI connectors, to enable a host to control the library robotics.

Each of the drives in the system and the library robotics is a separate SCSI device and is wired to a separate SCSI bus. Any of the separate buses may be combined using a SCSI jumper cable, available from Compaq. If any two or more devices are connected to the same SCSI bus, each must be assigned a unique SCSI address. For information on assigning SCSI addresses, see the section entitled Configuration.

NOTE: For reduced internal cable length the single-ended units have the robotics and first drive daisy-chained internally.

NOTE: For best performance, no more than two TZ89 drives should be connected to a single SCSI bus, because of the bandwidth limitations of the SCSI bus.

A terminator of the proper type (68-pin differential) must be installed on each unused connector at the end of each bus, as explained below in the section entitled Interface Cable and Terminator Installation. Figure 3-15 shows the SCSI cable, connectors and bus terminator used on the module.

3-28 Compaq TL881 Minilibrary System Users Guide

In order to connect a module to a host computer system, the host system must have at least one SCSI controller and the appropriate driver software. As noted earlier, higher-speed drives may require the use of separate SCSI controllers for each drive or each pair of drives. No more than two TZ89 drives should be connected to a single SCSI bus. Your Technical Support representative is available to answer your questions about installation procedures for specific host systems. Before cabling the system, see the recommended SCSI cable specifications in the following section. Also, see the section entitled Interface Cable and Terminator Installation.

Interface Cable Specifications

The MiniLibrary is a high-performance system. To avoid degradation of performance, use the highest-quality interface cables. The detailed requirements for SCSI cables are set forth in ANSI X3.131-1994. All SCSI cables used with the MiniLibrary Module meet at least the following requirements:

■

Shielded or double-shielded, as required to meet EMI specifications;

■

Impedance match with cable terminators of 132 ohms, ideally;

■

Characteristic impedance between 90 and 132 ohms, required;

■

Each end of the twisted pair ground must be connected to chassis ground;

■

The maximum cable length for a differential Fast SCSI bus is 82 ft. (25 m)

IMPORTANT: When calculating the overall length of the bus, be sure to include the internal cabling of the module, which is as follows:

MiniLibrary Base Module: Fast/Wide (DLT 20/40 Drive)

DLT0 14 inches (36 cm) DLT1 23 inches (57 cm) Expansion Unit: 32 inches (81 cm)

■

Cables of different impedances should not be used together.

Additional specifications to assure the highest SCSI performance can be found in ANSI X3.131-1994 or later.

Installation 3-29

NOTE: This equipment has been tested for electromagnetic emissions and immunity

using good quality shielded cables. The use of unshielded cables, poor quality cables or other variances from good practice may result in non-compliance with national and international rules.

Terminators

A terminator must be installed on the device if the device is to be used at either end of a SCSI bus, such as the first or last device along a daisy-chain, or as a single SCSI peripheral. The appropriate type and quantity of terminator is shipped with your module. They are packaged in the accessory bag that arrives with the module.

NOTE: It is important to use only differential terminators on a differential SCSI bus.

Interface Cable and Terminator Installation

To properly cable a module:

1. Make sure that your host system has an appropriate SCSI interface card

for each SCSI bus and software drivers installed.

2. Inspect the terminator and make sure it is a differential type. SCSI

terminators should be clearly marked ‘single-ended’ or ‘differential’.

3. Determine whether the module is to be connected in daisy-chain fashion

with other devices.

4. If not used in a daisy-chain, install the terminator in the second SCSI

connector.

5. If used in a daisy-chain, and the drive is the last device of the chain,

install the terminator in the second SCSI connector. Otherwise, do not use the terminator. Connect the next cable in the chain to the second SCSI connector.

6. Make sure that the cable you use meets the specifications listed earlier

in this chapter.

7. Measure the cable length to connect the module to the computer system.

8. Be sure that the length of the entire bus falls below the maximum

permissible length given in the section entitled Interface Cable Specifications.

3-30 Compaq TL881 Minilibrary System Users Guide

Figure 3-16. MiniLibrary Base Module SCSI Connectors, Terminators and Cables (Fast/Wide Interface, Independent Bus Connection Shown)

SCSI terminator

DLT0

DLT1

Expansion Unit interface

Power connector

Power cable

Fan

SCSI cables

SCSI interface

Library connectors (not used in

Slave mode)

SHR-1246

3-31 Compaq TL881 Minilibrary System Users Guide

Figure 3-17. MiniLibrary Base Module SCSI Connectors, Terminator, Jumpers and Cables (SCSI-2 Interface, Daisy-chained Connection Shown)

SCSI terminator

DLT0

DLT1

Expansion Unit interface

Power connector

6 7 8 9

SHR-1247

Power cable Fan SCSI jumpers SCSI interface Library connectors (not used in

Slave mode)

Configuration

Individual MiniLibrary Base Modules in all newly assembled systems must be configured as described in the next section. In addition, the MiniLibrary System is designed with several configuration options, each offering multiple settings to support a variety of applications and platforms. The setting of each option is stored in non-volatile memory in the module. For most applications, you will not need to change the factory default settings.

To change settings, you need to use the control panel on the Expansion Unit. For an overview of how the control panel works, and a description of the functions of the buttons, indicators and display, refer to sections entitled

Entering the Menu Mode, Exiting the Menu Mode, and Navigating Through the Menu Structure in Chapter 2, Operation.

HP Compaq TL881 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Notice

Contents

About This Guide