Overland Data DLT LibraryXpress Series User manual

104140-101, Revision A 7/97
LibraryXpress™ Series
DLT Library System
Including
LXG, LXB, and LXC Modules
and XpressChannel
Service Manual
DIGITAL Part Number
EK–TL890–SV. A01

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CONTENTS
CHAPTER 1 - INTRODUCTION ..................................................................................1
MODULES ..........................................................................................................................1
SmartScale Storage™ Architecture............................................................................... 2
The Global Control Module .......................................................................................... 2
The Base Module .......................................................................................................... 3
The Capacity Module....................................................................................................3
SCSI INTERFACE CONFIGURATIONS ....................................................................................3
SCSI BUS PERFORMANCE CONSIDERATIONS........................................................................4
Data Transfer Rate .......................................................................................................4
Drives...........................................................................................................................4
Internal Cabling Configuration.....................................................................................4
Bus Length Limitations .................................................................................................4
PHYSICAL CONFIGURATION ................................................................................................4
SYSTEM EXPANSION...........................................................................................................5
Conversion of Free-Standing Base Modules for System Use..........................................5
FEATURES.......................................................................................................................... 5
Control Panel ...............................................................................................................6
Power Supply................................................................................................................7
Tape Cartridge Magazines............................................................................................7
Integral Fan Cooling ....................................................................................................9
Library Robotics...........................................................................................................9
Bar Code Reader ..........................................................................................................9
ADVANCED DESIGN FEATURES ...........................................................................................9
Embedded Diagnostics................................................................................................ 10
Error Checking........................................................................................................... 10
Buffer.......................................................................................................................... 10
Compression...............................................................................................................10
Capacity ..................................................................................................................... 10
Media Life .................................................................................................................. 11
RELATED PUBLICATIONS .................................................................................................. 11
CHAPTER 2 - INSTALLATION.................................................................................. 13
INTRODUCTION ................................................................................................................ 13
PLANNING YOUR INSTALLATION....................................................................................... 13
Positioning the Modules.............................................................................................. 14
MECHANICAL INSTALLATION............................................................................................ 14
Identifying the Parts of the XpressChannel .................................................................14
Orientation of Parts During Assembly......................................................................... 16
Preparing to Assemble the XpressChannel.................................................................. 17
Assembling the XpressChannel....................................................................................17
Installing the Belt........................................................................................................19
Adding to an Existing XpressChannel ......................................................................... 23
Mounting the Module Rack Slides............................................................................... 23
Installing the XpressChannel in the Rack.................................................................... 26
INTERFACES AND CABLING ............................................................................................... 28
XpressChannel Motor Cable.......................................................................................29
Control Cables............................................................................................................29
Power Cord ................................................................................................................ 29
SCSI Interfaces........................................................................................................... 29
Interface Cable Specifications..................................................................................... 30
Terminators ................................................................................................................31

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Interface Cable and Terminator Installation............................................................... 32
CONFIGURATION.............................................................................................................. 33
Setting Slave Configuration (Base Module Only)........................................................ 33
A Configuration Example - Setting the SCSI ID.......................................................... 35
Setting Up a Mail Slot................................................................................................. 37
Reserved Slots............................................................................................................. 38
Descriptions of Configuration Options........................................................................ 39
CHAPTER 3 - OPERATION ....................................................................................... 43
GLOBAL CONTROL MODULE............................................................................................. 43
Front Panel ................................................................................................................43
Front Panel and Media Locks..................................................................................... 47
STARTING THE SYSTEM..................................................................................................... 48
Display Messages ....................................................................................................... 48
SELECTING CONTROL PANEL DISPLAY MODES .................................................................. 51
The LibraryXpress Menu Structure ............................................................................. 51
Entering the Menu Mode ............................................................................................ 52
Exiting the Menu Mode............................................................................................... 54
Navigating Through the Menu Structure..................................................................... 54
Displaying Firmware Revision.................................................................................... 59
Displaying Error Logs ................................................................................................ 59
Loading and Unloading Tapes.................................................................................... 60
INSERTING AND REMOVING CARTRIDGES .......................................................................... 63
Removing a Magazine.................................................................................................64
Emergency Magazine Removal ................................................................................... 65
Inserting Cartridges Into the Magazine....................................................................... 65
Inserting a Magazine.................................................................................................. 65
BASE MODULE................................................................................................................. 67
CAPACITY MODULE ......................................................................................................... 68
TAPE REQUIREMENTS....................................................................................................... 68
Cartridge handling and Storage.................................................................................. 68
Write Protection ......................................................................................................... 69
BARCODE LABELS............................................................................................................ 69
CHAPTER 4 — MAINTENANCE............................................................................... 71
CLEANING CARTRIDGE..................................................................................................... 71
Required Location for the Cleaning Cartridge............................................................ 72
Installing a Cleaning Cartridge .................................................................................. 72
When to Run the Cleaning Cartridge .......................................................................... 73
Running the Cleaning Cartridge................................................................................. 73
Removing the Cleaning Cartridge............................................................................... 74
UPDATING FIRMWARE...................................................................................................... 75
CHAPTER 5 — TROUBLESHOOTING .................................................................... 79
DIAGNOSING PROBLEMS................................................................................................... 79
ERROR RECOVERY ........................................................................................................... 79
Error Recovery Procedures ........................................................................................ 80
FAULT SYMPTOM CODES (FSC)........................................................................................ 81
USING CE DIAGNOSTICS .................................................................................................. 82
Cartridge Cycle Diagnostic ........................................................................................ 83
Tach Feedback Diagnostic.......................................................................................... 84
Scanner Feedback Diagnostic..................................................................................... 84
USING THE DEMO SUBMENU ............................................................................................. 84
CHAPTER 6 - PARTS REMOVAL AND REPLACEMENT..................................... 85
PARTS LOCATIONS ........................................................................................................... 86

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ACCESS PLATES................................................................................................................ 88
CARTRIDGE MAGAZINE REMOVAL .................................................................................... 90
Module Operates Normally......................................................................................... 90
Module Operates in Part, But Will Not Release Magazine .......................................... 90
Module Will Not Operate............................................................................................ 91
BAR CODE READER ASSEMBLY......................................................................................... 91
DRIVE CADDY ASSEMBLY (BASE MODULE ONLY)............................................................. 92
CONTROL PANEL ASSEMBLY............................................................................................. 94
CONTROLLER PWB ASSEMBLY......................................................................................... 96
Connector Locations................................................................................................... 96
DOOR OPENER/MAGAZINE LOCK ASSEMBLY..................................................................... 98
FAN ASSEMBLY.............................................................................................................. 101
FRONT PANEL ASSEMBLY ............................................................................................... 104
LEADSCREW ASSEMBLY ................................................................................................. 105
MAGAZINE DOOR ASSEMBLY.......................................................................................... 107
MAGAZINE DOOR OPTO SENSOR ..................................................................................... 108
MAGAZINE OPTO SENSOR............................................................................................... 110
MAGAZINE UNLOCK/OPEN SWITCH, MAGAZINE SECURITY LOCK..................................... 111
MULTIPLEXER ASSEMBLY............................................................................................... 113
POWER SWITCH.............................................................................................................. 114
POWER SUPPLY ASSEMBLY............................................................................................. 114
SHUTTLE ASSEMBLY....................................................................................................... 119
SHUTTLE MOTOR ASSEMBLY .......................................................................................... 120
XPRESSCHANNEL PARTS REPLACEMENT.......................................................................... 121
APPENDIX A - SPECIFICATIONS........................................................................... 123
APPENDIX B - ACCESSORIES/SPARES/ FRUS..................................................... 131
APPENDIX C - ESD PRECAUTIONS....................................................................... 133
INDEX......................................................................................................................... 135
Figures
FIGURE 1-1 GLOBAL CONTROL MODULE FRONT VIEW.........................................................5
FIGURE 1-2 BASE MODULE FRONT VIEW............................................................................. 6
FIGURE 1-3 CAPACITY MODULE FRONT VIEW .....................................................................6
FIGURE 1-4 BASE MODULE 10-CARTRIDGE MAGAZINE........................................................7
FIGURE 1-5 GLOBAL CONTROL MODULE REAR VIEW...........................................................8
FIGURE 1-6 BASE MODULE REAR VIEW...............................................................................8
FIGURE 1-7 CAPACITY MODULE REAR VIEW .......................................................................9
FIGURE 2-1. XPRESSCHANNEL EXTERNAL PARTS .............................................................. 15
FIGURE 2-2. XPRESSCHANNEL CAR................................................................................... 16
FIGURE 2-3 CAR REAR VIEW SHOWING BELT BLOCK......................................................... 16
FIGURE 2-4 XPRESSCHANNEL ASSEMBLED........................................................................ 18
FIGURE 2-5 THREADING THE BELT THROUGH THE DRIVE SECTION ..................................... 20
FIGURE 2-6 THREADING THE BELT THROUGH THE BASE SECTION....................................... 20
FIGURE 2-7 CHECKING BELT LENGTH ............................................................................... 21
FIGURE 2-8. BELT BLOCK WITH BELT IN PLACE................................................................ 21
FIGURE 2-9 ALIGNING THE CAPTIVE SCREWS WITH THE BLOCK ......................................... 22
FIGURE 2-10 RACK SLIDE PARTS ...................................................................................... 24
FIGURE 2-11 SEPARATING A RACK SLIDE .......................................................................... 25
FIGURE 2-12 INSTALLING THE XPRESSCHANNEL IN THE RACK............................................ 27
FIGURE 2-13 GLOBAL CONTROL SCSI CONNECTORS, TERMINATOR AND CABLES............... 28
FIGURE 2-14 BASE MODULE SCSI CONNECTORS, TERMINATORS AND CABLES................... 32

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FIGURE 2-15 BASE MODULE SCSI CONNECTORS, TERMINATOR, JUMPERS AND CABLES..... 32
FIGURE 2-16 BASE MODULE DEFAULT SCREEN ................................................................. 33
FIGURE 2-17 BASE MODULE MAIN MENU......................................................................... 34
FIGURE 2-18 CONFIGURE SUBMENU.................................................................................. 34
FIGURE 2-19 CONFIGURE SUBMENU, SCROLLED................................................................ 34
FIGURE 2-20 SPECIAL CONFIG SUBMENU .......................................................................... 34
FIGURE 2-21 SPECIAL CONFIG SUBMENU, SCROLLED......................................................... 35
FIGURE 2-22 ACKNOWLEDGMENT SCREEN........................................................................ 35
FIGURE 2-23 DEFAULT SCREEN ........................................................................................ 35
FIGURE 2-24 MAIN MENU ................................................................................................ 35
FIGURE 2-25 CONFIGURE SUBMENU.................................................................................. 36
FIGURE 2-26 SET SCSI SUBMENU..................................................................................... 36
FIGURE 2-27 SET SCSI SUBMENU SCROLLED .................................................................... 37
FIGURE 2-28 SET MAIL SLOT SUBMENU............................................................................ 37
FIGURE 2-29 SET MAIL SLOT SUBMENU ENABLED............................................................. 38
FIGURE 2-30 SET RESERVED SLOTS SUBMENU................................................................... 38
FIGURE 3-1 GLOBAL CONTROL MODULE FRONT PANEL..................................................... 43
FIGURE 3-2 GLOBAL CONTROL MODULE AND CAPACITY MODULE CONTROL PANEL........... 44
FIGURE 3-3 BASE MODULE CONTROL PANEL .................................................................... 45
FIGURE 3-4 POST SCREEN............................................................................................... 48
FIGURE 3-5 INITIALIZATION SCREEN ................................................................................ 49
FIGURE 3-6 DEFAULT SCREEN .......................................................................................... 49
FIGURE 3-7 FAULT SCREEN .............................................................................................. 49
FIGURE 3-8 SLAVE MODULE DEFAULT SCREEN ................................................................. 50
FIGURE 3-9 LIBRARYXPRESS MENU STRUCTURE ............................................................... 52
FIGURE 3-10 MAIN MENU ................................................................................................ 53
FIGURE 3-11 PANEL LOCKED SCREEN............................................................................... 53
FIGURE 3-12 CODE ENTRY SUBMENU ............................................................................... 53
FIGURE 3-13 SHOW STATUS MENU ................................................................................... 54
FIGURE 3-14 LIBRARY STATUS SUBMENU ......................................................................... 55
FIGURE 3-15 DRIVE STATUS MENU................................................................................... 56
FIGURE 3-16 MAP INFO SUBMENU .................................................................................... 56
FIGURE 3-17 SECURITY MENU.......................................................................................... 57
FIGURE 3-18 CODE SELECT SUBMENU............................................................................... 58
FIGURE 3-19 CODE ACCEPT SUBMENU.............................................................................. 58
FIGURE 3-20 PANEL LOCKED SCREEN............................................................................... 59
FIGURE 3-21 CODE ENTRY SUBMENU ............................................................................... 59
FIGURE 3-22 CODE VALIDATE SUBMENU .......................................................................... 59
FIGURE 3-23 ERROR HISTORY SCREEN.............................................................................. 60
FIGURE 3-24 DEFAULT SCREEN ........................................................................................ 60
FIGURE 3-25 MAIN MENU ................................................................................................ 60
FIGURE 3-26 LOAD/UNLOAD INITIAL SCREEN ................................................................... 61
FIGURE 3-27 LOAD/UNLOAD ‘FROM’ ENTRY SCREEN........................................................ 62
FIGURE 3-28 LOAD/UNLOAD ‘TO’ ENTRY SCREEN............................................................ 62
FIGURE 3-29 CONFIRMATION SCREEN............................................................................... 62
FIGURE 3-30 LOAD/UNLOAD ‘IN PROGRESS’ SCREEN........................................................ 62
FIGURE 3-31 MAGAZINE IN PLACE.................................................................................... 63
FIGURE 3-32 MAIN MENU ................................................................................................ 64
FIGURE 3-33 MAIN MENU, SCROLLED .............................................................................. 64
FIGURE 3-34 SECURITY MENU.......................................................................................... 64
FIGURE 3-35 UNLOCK ALL MEDIA SCREEN ....................................................................... 64
FIGURE 3-36 10-SLOT TAPE MAGAZINE WITH CARTRIDGES INSTALLED ............................. 65
FIGURE 3-37 MAIN MENU ................................................................................................ 66
FIGURE 3-38 MAIN MENU, SCROLLED .............................................................................. 66
FIGURE 3-39 SECURITY MENU.......................................................................................... 66
FIGURE 3-40 UNLOCK ALL MEDIA SCREEN ....................................................................... 66

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FIGURE 3-41 LOCK ALL MEDIA SCREEN............................................................................ 67
FIGURE 3-42 BASE MODULE FRONT PANEL ....................................................................... 67
FIGURE 3-43 DLTTAPE CARTRIDGE.................................................................................. 69
FIGURE 4-1 MAIN MENU .................................................................................................. 73
FIGURE 4-2 MAINTENANCE MENU .................................................................................... 73
FIGURE 4-3 CLEANING SUBMENU...................................................................................... 73
FIGURE 4-4 CLEANING CONFIRMATION SCREEN................................................................. 74
FIGURE 4-5 CLEANING IN PROGRESS SCREEN .................................................................... 74
FIGURE 4-6 MAIN MENU .................................................................................................. 75
FIGURE 4-7 MAINTENANCE SUBMENU............................................................................... 75
FIGURE 4-8 FLASH UPDATE SCREEN.................................................................................. 76
FIGURE 4-9 FLASH UPDATE IN PROCESS ............................................................................ 76
FIGURE 4-10 FLASH UPDATE CHECK SCREEN .................................................................... 76
FIGURE 4-11 FLASH UPDATE COMPLETION SCREEN ........................................................... 76
FIGURE 4-12 DEFAULT SCREEN......................................................................................... 77
FIGURE 5-1 TROUBLESHOOTING FLOW CHART................................................................... 80
FIGURE 5-2 MAIN MENU .................................................................................................. 83
FIGURE 5-3 MAINTENANCE SUBMENU............................................................................... 83
FIGURE 5-4 DIAGNOSTIC SUBMENU................................................................................... 83
FIGURE 6-1 PARTS LOCATIONS, BASE MODULE................................................................. 87
FIGURE 6-2 PARTS LOCATIONS, GLOBAL CONTROL AND CAPACITY MODULES.................... 87
FIGURE 6-3 COVER PLATE ................................................................................................ 89
FIGURE 6-4 BAR CODE READER........................................................................................ 92
FIGURE 6-5 DRIVE CADDY................................................................................................ 93
FIGURE 6-6 CONTROL PANEL............................................................................................ 95
FIGURE 6-7 CONTROLLER PWB CONNECTOR LOCATIONS.................................................. 96
FIGURE 6-8 CONTROLLER PWB CONNECTOR LOCATIONS, EARLY BASE MODULE .............. 97
FIGURE 6-9 DOOR OPENER/MAGAZINE LOCK ASSEMBLY................................................. 100
FIGURE 6-10 FAN ASSEMBLY, BASE MODULE ................................................................. 102
FIGURE 6-11 FAN ASSEMBLY, GLOBAL CONTROL AND CAPACITY MODULES .................... 103
FIGURE 6-12 FRONT PANEL ............................................................................................ 104
FIGURE 6-13 LEADSCREW ASSEMBLY ............................................................................. 106
FIGURE 6-14 MAGAZINE DOOR....................................................................................... 107
FIGURE 6-15 DOOR OPTO SENSOR................................................................................... 108
FIGURE 6-16 MAGAZINE TRACK AND SENSOR ................................................................. 110
FIGURE 6-17 MAGAZINE UNLOCK/OPEN SWITCH AND MAGAZINE SECURITY LOCK........... 112
FIGURE 6-18 MULTIPLEXER ASSEMBLY (GLOBAL CONTROL MODULE ONLY) ................... 113
FIGURE 6-19 POWER SUPPLY ASSEMBLY, CURRENT PRODUCTION.................................... 116
FIGURE 6-20 POWER SUPPLY ASSEMBLY, EARLY PRODUCTION........................................ 118
FIGURE 6-21 SHUTTLE MOTOR ....................................................................................... 120
Tables
TABLE 1-1 BASE MODULE TAPE CAPACITIES..................................................................... 10
TABLE 1-2 GLOBAL CONTROL AND CAPACITY MODULE TAPE CAPACITIES ......................... 10
TABLE 2-1 BELT LENGTH FOR VARIOUS SYSTEM SIZES...................................................... 19
TABLE 2-1 LIBRARYXPRESS CONFIGURATION OPTIONS ..................................................... 40
TABLE 3-1 CONTROL PANEL BUTTON FUNCTIONS ............................................................. 47
TABLE 5-1 ERROR RECOVERY PROCEDURES...................................................................... 81
TABLE 5-2 FAULT SYMPTOM CODES ................................................................................. 82

Chapter 1 - Introduction 1
Chapter 1 - Introduction
The DLT LibraryXpress™ System is an expandable, modular tape library system combining
DLT drive technology with advanced robotics. The LibraryXpress 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.
Modules
Available modules in the LibraryXpress series are the following.
• Global Control Module (LXG)
• Base Module (LXB)
• Capacity Module (LXC)
Every DLT LibraryXpress System consists of one Global Control Module, and any
combination of up to eight of the remaining modules stacked in a rack. The Global Control
Module can move media freely between itself, Base Modules, and Capacity Modules via the
robotically-controlled XpressChannel™.
In a DLT LibraryXpress System, you can combine modules to provide the right combination
of capacity and performance to meet your present requirements. Overland Data’s SmartScale
Storage™ architecture lets you change or add to the mix of modules to optimize throughput,
capacity, or both as your needs change.
When connected as a system, the robotics in Base Modules and Capacity Modules act as
commanded by the Global Control Module. The host computer or computers need no
knowledge of the internal geometry of the system, or of the actions or capabilities of any of
the slave modules. The Global Control Module presents to the host or hosts a single SCSI
medium changer device with a single SCSI Medium Transport element, a number of 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 Global Control
Module, and a number of SCSI Data Transfer elements equal to the total number of drives in
the system.

2Chapter 1 - Introduction
SmartScale Storage™ Architecture
Flexibility
The DLT LibraryXpress Smartscale Storage™ architecture is uniquely suited to growing
storage needs. Overland Data’s Smartscale Storage architecture enables the robotics in each
of the LibraryXpress modules to exchange cartridges by means of the XpressChannel™ pass-
through elevator, and integrates the robotics in the individual modules and the Global
Control’s XpressChannel into a single high-performance library robotics system. You can
start with a system configured to your present requirements, confident that as your storage
needs evolve, the LibraryXpress can easily be modified by adding modules and extending the
XpressChannel. 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.
Multi-Server Data Sharing
A host computer with a SCSI controller connected to a bus is a SCSI Initiator. The Global
Control Module is a SCSI Target. SCSI rules permit multiple Initiators on a single bus.
Therefore, with the proper host software, it is possible to connect multiple hosts to a single
Global control Module over a single SCSI bus. This allows multiple hosts to operate the
library robotics, loading and unloading cartridges as each host requires.
In a system with many drives, it is desirable to use multiple SCSI busses for the drives, so the
data transfer rate of the drives is not limited by bus bandwidth. In a large, high-performance
system, drives may be connected to separate hosts. Using special software, one of the hosts
can act as a master server, processing all robotics commands. In this way several hosts may
share a common data base.
The Global Control Module
Description
The LXG5016 Global Control Module integrates the robotics in the individual modules into a
single coordinated library robotics system. The Global Control Module performs and
maintains an inventory of all media present in the system, including bar code data, if the
modules are equipped with bar code readers. All necessary system control operations may be
performed from the control panel of the Global Control Module, 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 is available in standard SCSI-2, Fast SCSI-2 or Fast/Wide
SCSI configurations.
In addition to its system control functions, the Global Control Module has a 16-cartridge
magazine with a rugged random access robotic mechanism. The module robotics moves
cartridges between the XpressChannel and any of the 16 cartridge storage locations.
The user may 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 which has been reserved for Import/Export service may not be
used for data storage.