Quantum VLS DLT User Manual

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INSTALLATION

VIRTUALLIBRARYSYSTE

AND

OPERATING GUIDE

Advanced Digital Information Corporation

The information contained in this document is subject to change without notice.

This document contains proprietary information that is protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced or translated to another language without the prior written consent of ADIC.

ADIC shall not be liable for errors contained herein or for incidental or consequential damages (including lost profits) in connection with the furnishing, performance or use of this material whether based on warranty, contract, or other legal theory.

Printed in the U.S.A.

March 1997

Document Number 62-0100-01 Rev D

Advanced Digital Information Corporation

(206) 881-8004

Customer Assistance: (206) 883-HELP

BBS: (206) 883-3211

Internet: http://www.adic.com

Shipping Address: 10201 Willows Road

Redmond, WA 98052

Mailing Address: P.O. Box 97057

Redmond, WA 98073-9757

21-23 Avenue Saint Fiacre,

Saint Germaiin-en-Laye,

33 1 3087 5300

Fax: 33 1 3087 5301

ADIC and ADIC Europe are trademarks of Advanced Digital Information Corporation.

ADIC Europe

78100 France

All rights reserved. No part of this document may be copied or reproduced in any form or by any means, without prior written permission of ADIC Europe, Z.A. du Bel-Air, 21 avenue Saint-Fiacre, 78100 - Saint-Germain en Laye, France.

ADIC Europe assumes no responsibility for any errors that may appear in this document, and retains the right to make changes to these specifications and descriptions at any time, without notice.

This publication may describe designs for which patents are pending, or have been granted. By publishing this information, ADIC Europe conveys no license under any patent or any other right.

ADIC Europe makes no representation or warranty with respect to the contents of this document and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose. Further, ADIC Europe reserves the right to revise or change this publication without obligation on the part of ADIC Europe to notify any person or organization of such revision of change.

Every effort has been made to acknowledge trademarks and their owners. Trademarked names are used solely for identification or exemplary purposes, any omissions are made unintentionally.

ADIC Europe is a trademark of ADIC

iii

EMI/RFI Compliance

United States – FCC

WARNING: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception (which can be determined by turning the equipment off and on) the user is encouraged to try to correct the interference by one or more of the following measures:

• Re-orient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

You may find the following booklet prepared by the Federal Communications Commission helpful: How to Identify and Resolve Radio-TV Interference Problems. This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004000-00354-04.

Canada – Department of Communications

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled "Digital Apparatus", ICES-003 of the Department of Communications.

Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils numériques de Class B prescriptes dans la norme sur le matériel brouilleur: "Appareils Numériques", NMB-003 édictée par le ministre des Communications.

Shielded Cables

Shielded data cables are required in order to meet EMI/RFI limit specifications. The ADIC data cable meets this requirement. If you need a replacement cable, be sure to use an ADICapproved shielded cable (to assure acceptability to EMI/RFI requirements).

Two or more VLS units cabled to each other on the same SCSI channel must have a ferrite bead clamped on the interface cable between the units. The ferrite bead is required to satisfy the EMI/RFI limit specifications. See Appendix A for instructions on installing the ferrite bead.

Declaration of Conformity

according to EN 45014

Manufacturer’s Name:

Manufacturer’s Address:

Type of equipment:

Model No.:

Year of Manufacture:

conforms to the following international specifications, as required by 89/336/EEC & 92/31/EEC:

EMI: EMC: Safety:

Advanced Digital Information Corporation

11431 Willows Road NE 21-23 Av. Saint-Fiacre Redmond, WA 98052 USA

Virtual Library System

VLS DLT 400, VLS DLT 700

1998

F-78100 Saint-Germain-en-Laye France

EN 50081-1, EN-55022 Class B EN 50082-1, IEC 801-2, IEC 801-3, IEC 801-4 EN 60950

Redmond, Washington USA 31-July-1998 On File

Location Date

Signature Name: Harvey Scott Title: Mgr, Product Engineering

Blank Page

Table of Contents

Copyright Notice.......................................................................................................................ii

Copyright Notice (Europe).......................................................................................................iii

EMI/RFI Compliance................................................................................................................iv

Quickstart..................................................................................................................................ix

Chapter 1 Getting Started.......................................................................................................... 1

Introduction ........................................................................................................................ 2

Requirements...................................................................................................................... 2

Unpacking and Inspecting .................................................................................................. 3

Equipment Description....................................................................................................... 4

The VLS Unit............................................................................................................... 4

Drives........................................................................................................................... 4

Magazine...................................................................................................................... 5

DLT Media......................................................................................................................... 6

Cleaning Tape.............................................................................................................. 8

System Software................................................................................................................. 8

Preparing the Host Computer System ................................................................................ 9

Power Off the Computer.............................................................................................. 9

Confirm and/or Install the SCSI Host Interface........................................................... 9

Chapter 2 Connecting the VLS............................................................................................... 11

Connecting the Interface Cables....................................................................................... 12

Connecting More than One VLS...................................................................................... 13

Powering on the System ................................................................................................... 14

Installing the Backup Software......................................................................................... 15

Chapter 3 Equipment Description........................................................................................... 17

Front Panel Switches and Indicators ................................................................................ 18

Rear Panel Switches and Connectors............................................................................... 20

Menu Items....................................................................................................................... 21

Configuration Menu................................................................................................... 23

Diagnostics Menu ...................................................................................................... 27

Write EEPROM Mode............................................................................................... 28

Chapter 4 Operation and Maintenance ................................................................................... 29

Inserting the Data Cartridges into the Magazine.............................................................. 30

Inserting the Magazine into the VLS................................................................................ 31

Loading the Magazine...................................................................................................... 33

Attempting to Load the Magazine with a Cartridge Already in Drive............................. 34

Manually Removing a Cartridge Loaded in the Drive............................................... 35

Removing a Cartridge Loaded in the Drive Using the Diagnostics Menu................. 35

Removing the Magazine from the VLS............................................................................37

Removing the Magazine while a Cartridge is in the Drive........................................38

Loading an Individual Cartridge.......................................................................................38

Manually Loading a Cartridge ................................................................................... 39

Semi-automatically Loading a Cartridge....................................................................39

Unloading an Individual Cartridge ................................................................................... 41

Semi-automatically Unloading a Cartridge................................................................ 41

Removing a Cartridge from the Magazine........................................................................ 42

Storing the Magazine........................................................................................................ 43

Cleaning the Drive Head................................................................................................... 43

Cleaning Tape ............................................................................................................43

Head Cleaning Procedure...........................................................................................45

Cleaning the Enclosure.....................................................................................................49

Chapter 5 Troubleshooting and Diagnostics...........................................................................51

Installation Problems ........................................................................................................ 52

Library and Drive Operational Problems..........................................................................53

Library Error Messages .................................................................................................... 54

Drive Status and Warning Signals.................................................................................... 55

Use Cleaning Tape Drive LED......................................................................................... 57

Causes of the Use Cleaning Tape LED...................................................................... 58

Environmental Considerations.......................................................................................... 60

When You Call ADIC Customer Assistance.................................................................... 60

Return for Repair RMA (Return Merchandise Authorization) ........................................62

Appendix A Installing the Ferrite Bead .................................................................................. 65

Appendix B Diagnostics Menu ............................................................................................... 67

Appendix C Downloading New Firmware..............................................................................75

Appendix D Glossary..............................................................................................................77

Appendix E Specifications...................................................................................................... 81

Index........................................................................................................................................ 85

viii Table of Contents

QUICKSTART

p provides a quick start guide for experts who

are familiar with installing computer hardware and software.

p Confirm that power is off and that you have a SCSI

HostComputerVLS

interface (either a separate board as offered by ADIC, or integrated on the mother-board) installed in the host computer. Consult your computer manual.

p Place the ADIC VLS near the host computer to which it

will be connected.

Terminator

SCSI Interface Cable

The VLS has been

shipped with the SCSI ID for the DLT drive set at "1" and the robotics set at "3".

x Table of Contents

p Connect the SCSI interface cable between the SCSI

connector on the computer and the back of the VLS.

p Make sure there is a terminator installed on the last

device of the SCSI chain.

p Connect the AC power cord first to the VLS and then to

the AC outlet. Power on the VLS. Power on the computer.

p Place the magazine on the carriage by slipping it over

the left "magazine position" pin then rotating toward the right and pressing into place onto the right "magazine position" pin.

L eft"magazine p osition"pin

Quickstart xi

p If the application has not already done so, load the

magazine by pressing first the ALT button and then the LOAD button. (If you are in sequential-access mode, the

first cartridge will be inserted in the drive when the load finishes.)

p Install or confirm the backup software (to run the VLS)

on the host computer.

xii Table of Contents

p Run any diagnostic tests provided with the backup

software to make sure the VLS is communicating correctly with the host computer.

You are now ready to run the VLS at a system level.

GETTING STARTED

This Chapter…

p covers what you need (and what you need to

know) to install the ADIC Virtual Library System. Read this section before you begin installation.

CHAPTER

Introduction

ADIC has designed the Virtual Library System (VLS) for high-capacity, near and off-line storage applications, such as backup, hierarchical storage management (HSM) and video/design/data file libraries. For the most part, installation is simply a matter of checking all necessary SCSI connections, installing the software (backup or otherwise) and applying power. The defaults set at the factory should be sufficient for most applications.

Requirements

20.3 cm

8.0 in.

2 Getting Started

20.0 in.

50.8 cm

Figure 1: VLS Dimensions

17. 4 in

44.2 cm

p Space requirements: the VLS footprint is 17.4" x 20.0" x

8.0". You must allow adequate clearance to the rear (2 inches or more) and bottom (do not place on carpeting) to allow air flow. Also allow enough room at the front to open the door (which is 8" high and hinged at the bottom).

p We assume that you are familiar with your computer

system. The VLS must be incorporated into the host computer system. The backup software, SCSI adapter (if required) and any additional, or different, SCSI interface cable (s) must be purchased separately.

p Mode of operation: You must know whether the VLS

will be operating in sequential- or random-access mode. This will be determined by the backup software you use.

p Necessary tools: No special tools are required to install

the VLS. If you are installing a host adapter (SCSI controller) card at this time, refer to the installation manual for your host adapter.

Unpacking and Inspecting

If the operating environment differs from the storage environment by 15ºC (30ºF) or more, let the unit acclimate to the surrounding environment for at least 12 hours.

CAUTION

Unpack all items from the carton. Save the packing materials in case you need to move or ship the system in the future.

a dic

ONLINE R ESET UP DOWN

LOCK

MENU ENTER LEFT RIGHT POWER

Figure 2: VLS Packaging Contents

Getting Started 3

You must ship the ADIC VLS in the original or equivalent packing materials or your warranty may be invalidated.

Equipment Description

The VLS Unit

The ADIC VLS is a fully automated, high performance, high capacity, mass storage system designed with a removable data cartridge magazine. The door can be locked to deactivate the unit's keypad and to assure only authorized removal of the magazine and media. In addition, to protect the unit, data and media, the VLS will not operate unless the door is closed.

Drives

CAUTION

All drives are available

configured for operation with a single-ended or differential SCSI bus.

4 Getting Started

The ADIC VLS can be equipped with any of the drives listed in the following table:

VLS Model

DLT 400 DLT4000 40GB 180MB/min. DLT 700 DLT7000 70GB 600MB/min.

Drive Model

Table 1. Drive Capacity and Transfer Rate

Maximum Capacity (compressed mode)

Maximum Data Transfer Rate (compressed mode)

Magazine

Opensideo

ADIC strongly

recommends that you use ADIC approved DLT media only.

The magazine for the VLS holds seven DLT cartridges. It includes a clear dust cover to protect the cartridges and for ease of storage. Figure 3 shows a DLT cartridge and a filled magazine with the cover in place.

magazine

MagazineCove r

(towards VLS)

Closedside of magazin

Write-ProtectSwitch

Figure 3. VLS Magazine and DLT Cartridges

Getting Started 5

DLT Media

WRITE-PROTECTSWITCH

WRITE-ENABLED

WRITE-PROTECTEDORANGEINDICATO

The data cartridges used in the DLT drives are housed in 4inch plastic cases and employ ½-inch metal particle tape. Table 2 describes and lists the media cartridges that can be used with the three drive models.

Drive Model

DLT4000 DLTTape III

DLT7000 DLTTape III

Cartridge Model

DLTTape IIIXT DLTTape IV

Table 2. Media Cartridges

Color Tape

gray white black

Length

1100 ' 1800 ' 1800 '

Capacity

20 GB (compressed) 30 GB (compressed) 40 GB (compressed)

20 GB (compressed) 30 GB (compressed) 70 GB (compressed)

Figure 4: DLT Data Cartridge

The write-protect switch is used to prevent recording over existing data. To prevent recording or deleting, place the write-protect switch to the open position. The drive senses the position of the switch and will not allow writing in this

6 Getting Started

position. When installing cartridges in the library, place the switch in the closed position (unless you do not wish to record on a specific cartridge).

If the switch is moved all the way to the left, the cartridge is write-protected and the drive cannot write to, or erase data from, the cartridge. The small orange rectangle will be visible whenever the cartridge is write-protected. Additionally, an arrow (beneath the orange rectangle and above the two lines on the switch), lets you know that data cannot be written to the cartridge. If the switch is moved all the way to the right, the cartridge is write-enabled and the drive can write data to, or erase data from, the cartridge. The orange rectangle will not be visible whenever the cartridge is write-enabled. On the right side of the write-protect switch an arrow over one line indicates that if you slide the switch to the right, data can be written to the cartridge.

Note

• Store data cartridges in a dry, cool environment.

• Never reset or power down your computer or

VLS DLT while a function is in process or a tape is moving. In addition to getting tape with missing or corrupted data, you may also get tape run-on within the drive (a condition that can produce internal contamination requiring factory cleaning).

• If a power outage occurs during a back-up

sequence, restart your backup from the beginning.

Getting Started 7

Cleaning Tape

If the cleaning cycle is

noticeably shorter and the Use Cleaning TapeUse Cleaning Tape LED remains illuminated after a cleaning attempt, the cleaning tape has exhausted all of its cleaning cycles. Replace it with the same type and repeat the cleaning.

The tape heads should be cleaned when the Use Cleaning Tape LED on the drive front panel is illuminated. A

cleaning tape is shipped with your ADIC VLS-DLT. Discard it when there are no cleaning cycles remaining, and replace it with the same or equivalent type cleaning tape.

Figure 5:. DLT Cleaning Tape

System Software

8 Getting Started

Cleaning the head should always be performed as the first step if the Use Cleaning Tape LED is illuminated on the drive front panel.

A variety of backup and data storage software is available for use with the VLS. Please check with ADIC sales or Customer Assistance if you have a question on the compatibility of a particular software package.

Preparing the Host Computer System

Power Off the Computer

p Turn off the power switch. p Unplug the cord from the AC outlet.

Confirm and/or Install the SCSI Host Interface

The host computer

system normally is the server.

The VLS must be connected to either an integrated SCSI host or a SCSI interface (host adapter card installed in the computer – either directly to the I/O connector on the card or as part of an existing SCSI chain. The SCSI interface must be installed before you connect the VLS. Refer to the instructions supplied with the card.

Now you are ready to connect the VLS to your host computer. Follow the instructions provided in the next chapter.

Getting Started 9

Notes

10 Getting Started

CHAPTER

CONNECTING THE VLS

This Chapter…

p provides instructions for physically

connecting your VLS to your host system.

p steps you through the final phase of the

installation process.

Connecting the Interface Cables

NOTE: The interface

cable must be shielded – ADIC can supply you with the correct type.

The bail locks, or jack

screws at both ends of the SCSI cable must be securely fastened in order for the VLS to communicate properly with the computer.

Make sure the SCSI interface cable you are using has the correct connectors on each end. If it does not, you will need to obtain a different cable. Consult your dealer or ADIC Customer Assistance if you need help. Connect the interface cable as shown in Figure 6 and explained in the following steps:

p Check that the VLS and host computer power switches

are off.

p Attach one end of the cable to either connector on the

rear of the VLS. Press firmly and secure the bail locks, or jack screws.

p Plug the other end of the SCSI interface cable into the

external connector on the SCSI port card. Secure firmly.

Terminato r

VLS

SCSI In terface Cable

12 Connecting the VLS

Host C omp uter

Figure 6. Connecting the Interface Cable

p If this is the only unit you are installing, insert an

2VLSunits

external terminator into the second SCSI connector at the rear of the VLS. If you plan to connect another unit on the same SCSI channel, see the next section.

Connecting More than One VLS

When counting SCSI

devices, keep in mind that a VLS can contain two devices (the drive and the robotics). Don't forget to include in your count other devices on the SCSI channel, (i.e. a tape unit, an additional hard drive, etc.).

* When connecting two

or more VLS units to a single SCSI channel, you must install a ferrite bead on the cable. Refer to Appendix A for details.

If you are connecting additional VLS units on the same SCSI channel, simply attach each subsequent unit to the previous unit with an interface cable. Make sure all cables are properly secured. It makes no difference which connector you use for each connecting cable (see Figure 7).

You can attach up to seven devices on each SCSI channel (8-bit), or up to fifteen devices on each wide SCSI channel, but each VLS may represent more than one SCSI device.

*Fe rrite Be ad

SC S I Interfac e C able

Term inator

I/O C onn ectors

Host Com p uter

(O n sa me

SC S I

Ch a n n e l)

Figure 7. Cable Diagram for two VLS Units

Each VLS unit contains more than one SCSI device and may require more than one SCSI address (depending on the mode

Connecting the VLS 13

of operation). The following chart shows the number of SCSI addresses required in each operating mode. The second chart illustrates how many VLS units you can attach to one SCSI channel (if there are no other devices on the channel).

Number of SCSI Addresses Required

Sequential Mode

1 2

Maximum VLS units on one SCSI Channel (8-bit)

Sequential Mode Random Mode

7 3

Maximum VLS units on one wide SCSI Channel

Sequential Mode Random Mode

15 5

Powering on the System

p Plug the power cord into the back of the VLS. p Plug the power cord from the VLS into a grounded

electrical outlet.

Random Mode

p Plug the power cord from your host computer into a

p Turn on the VLS power. Turn on the host computer

14 Connecting the VLS

grounded electrical outlet.

power.

A display similar to the following will appear:

You are now ready to install the backup software – if it has not already been installed.

Installing the Backup Software

This is the software

that runs the VLS, not the data being transferred to the VLS cartridges. Two examples of backup software are Cheyenne's ARCserve and Legato's NetWorker.

At this point you need to refer to your software installation guide for instructions on installing the backup/controlling software for the VLS onto the host computer.

After you have completed installation of the VLS unit and of the software, to make sure your unit is operating correctly, you should run any diagnostic test(s) supplied with the backup software.

Connecting the VLS 15

Notes

16 Connecting the VLS

CHAPTER

EQUIPMENT DESCRIPTION

This Chapter …

p describes the switches, indicators and

connectors on the front and rear of the VLS.

p describes the various functions available via

the front panel buttons.

p describes the power-up procedure and

messages on the front panel LCD display.

Note: The pick arm must

be in its out position. You can move it manually when power is off (or with [ALT] and [UNLOAD] when power is on).

Front Panel Switches and Indicators

For the most part, once your Virtual Library System has been connected to your host computer system and the software has been installed, the VLS is ready for use. Just turn on the power switch, place a magazine on the carriage and press ALT and then LOAD.

If you need to change certain functions, you can use the front panel keys (as described in the next section).

Switches and indicators on the front of the VLS are shown in Figure 8 and described in Tables 2 and 3.

18 Equipment Description

Figure 8. Front Panel Display and Keypad

INDICATOR Description Display The two-line 16-character LCD shows current drive

status of the VLS, allows access to change features or displays error messages.

The VLS uses the LOAD

function to detect cartridges (or the absence of a cartridge).

Never attempt to

remove a magazine unless it is in the unload position – you may damage the pick arm.

Power LED

(green)

Locked LED

(green)

Lights up when the power is on.

Lights up when door is locked. No one can access the magazine, drive or keypad when the Locked LED is on.

Table 2. Front Panel Indicators

KEY Description MENU Press this button to enter or exit Off-Line Mode menus

and mode

ALT Selects alternate function for another button. For

example, press the ALT button and the UP button to activate the load function.

Selects previous item or value in the menu.

LOAD MAGAZINE

UNLOAD MAGAZINE

Press the ALT button and then this button to initiate a "load magazine" – the VLS will check all cartridges in the magazine (making note of empty spaces) and that all cartridges can be inserted in the drive.

Selects next item or value in the menu. Press the ALT button and then this button to initiate

the unload program – the VLS will return the magazine to the unload position.

This function is available for

all VLS models with firmware version 2.32 or later.

This function is available for

all VLS models with firmware version 2.32 or later.

ENTER Selects currently displayed item. ESC Exits current menu and returns to previous menu.

Scrolls message display left or selects previous field.

Open Door

Close Door

Press the ALT button and then this button to open the drive door.

Scrolls message display right or selects next field. Press the ALT button and then this button to close the

drive door.

Table 3. Front Panel Keypad

Equipment Description 19

Rear Panel Switches and Connectors

SCS

Panel

PowerSwitch

Switches and connectors on the rear of the VLS are shown in Figure 9 and described in Table 4.

Connectors

F an

F ilter

Rear

Access

Power Switch

AC Power Connector

SCSI I/O Connectors

Table 4. Rear Panel Switches and Connectors

AC Power

Connector an

Figure 9. VLS Rear Panel

Turns on the AC power to the VLS.

Plug the VLS AC power cord into this connector.

For the interface cable that connects the VLS to the computer, to other VLS units and/or to other devices on the SCSI channel.

20 Equipment Description

Menu Items

Use the following diagram as a quick reference once you have become familiar with the LCD menus described on the next few pages. The names at the top of the diagram are selections available from the Main Menu. When you choose one of the Main Menu items, a set of options appears; these options are listed below the Main Menu selections. If an option has sub-options, these sub-options are listed to the right of the option.

Equipment Description 21

Configuration Menu Diagnostics Menu Write EEPROM Mode

Buzzer Configuration Error Counters

ErrAlarm Yes/No Event Counters

Kybd Yes/No Operation Log

SCSI ID Config Firmware Revision

Drive (0-7) Serial Number

Changer (0-7) Position Magazine

SCSI Parity Opn/Cls Drv Dr

Parity Check Yes/No Load Medium

Off-line Time Unload Medium

Max time 1-99 min

On-line Mode Random/Sequential

Sequential Mode Cfg

First (0-11)

Last (0-11)

Loopback Yes/No

Prod. Sign-On

VLS 8mm Yes/No

Unload Drives

22 Equipment Description

To access the Off-Line Menu, press the MENU key. The display will read as follows:

Use the or buttons to scroll through the menu. Press ENTER to select a displayed item. Use the or buttons

to scroll through fields on the same line. To exit the Off-Line Menu press the MENU button.

Configuration Menu

The Configuration Menu allows you to select the following items:

• Buzzer Config • SCSI ID Config

• SCSI Parity • Off-Line Time

• On-Line Mode • Seq Mode Config

• Prod. Sign-On

Buzzer Configuration

Enables/disables alarm when there is an error message. Enables/disables keyboard beep sound when you press a button.

To enable the alarm mode use the button to select the ErrAlarm field. Use or to select "Y" to enable or "N" to

disable alarm. When ErrAlarm is enabled, a continuous alarm will sound in the event of an error message. The alarm will sound until the condition that caused the error has been

Equipment Description 23

removed or any key is pressed. (To clear an error message, press ALT and ENTER.)

To disable the keyboard beep, use the button to select the Kybd field. Use to select "N" to disable the beep.

Buzzer Configuration

default: ErrAlarm:N, Kybd:Y

SCSI ID Configuration

default: Drive :1 Changer:3

Press ENTER to make the changes effective or press ESC to return to previous menu item.

SCSI ID Config

Lets you select the SCSI ID for the drive and the robotics on the VLS.

Use or to select the desired field. Drv is the drive, and Changer is the robotics unit on the VLS. Use and to

scroll to the desired ID for that particular element. Press

ENTER.

Note

SCSI ID changes entered do not take effect until you cycle power on the VLS unit.

See the section titled Connecting More than One VLS in Chapter 2: Connecting the VLS noting the number of SCSI IDs required.

24 Equipment Description

SCSI Parity default:

Parity Check:N

SCSI Parity

Enables or disables the reporting of SCSI parity check.

Use or to select "Y" to enable, or "N" to disable the reporting of parity check. Press ENTER to activate the change.

Off-Line Time

Lets you set the number of minutes the VLS will remain in the Off-Line mode. If someone leaves the VLS in the OffLine Mode, after the pre-set number of minutes the VLS will automatically return On-Line. This assures that your automatic backup will be done even if the VLS has accidentally been left Off-Line.

Off-line time default

setting is "5" minutes.

The software you use

with the VLS determines whether you can operate the VLS in sequential and/or random mode.

Use or to select the number of minutes you wish the VLS to remain Off-Line. Press ENTER to execute the change.

On-line Mode

Lets you select random or sequential operating mode.

When in random-access mode, the VLS allows software selection of any cartridge in the magazine in any order. You can logically divide cartridge usage to satisfy particular data storage needs. For example, you can assign one or more cartridges to specific data functions (such as certain directories or network servers), or you can assign specific cartridges to individual users.

Equipment Description 25

Operating Mode default

setting is "Random".

ADIC's VLS can also be used as a stacker in sequential mode if your software does not support the random mode function.

A display similar to the following will appear:

Use or to select "random" or "sequential."

Sequential Mode Configuration

If you are using Sequential Mode, this option lets you select which cartridges the drive will write to, and whether or not you wish the drive to start again at the beginning after the last cartridge has been written to.

Use or to select the item you wish to change. "F" is the number of the First cartridge you wish the VLS to insert into the drive. "L" is the number of the Last cartridge you wish the VLS to insert into the drive.

Default setting is

F: 01 L: 11 Lpbk: Y

The Loopback (LPBK) mode determines what happens when the last cartridge has been filled. If you select "Y" for "Lpbk" the designated first cartridge will be loaded into the tape drive after the last cartridge has been filled and ejected. If you select "N" an error message will be issued and the backup will stop.

Product Sign-On

Normally, the VLS DLT will sign-on as a VLS DLT product and most application software will support it.. However, some older software will not recognize it as a VLS DLT. If

26 Equipment Description

Product Sign-On default

is "VLS 8mm : N".

your software does not recognize it, change the Product Sign-On to Use “VLS 8mm”: Y.

Use or to select "Y" for VLS 8mm, or "N" to select VLS DLT.

Note

Product Sign-On changes entered do not take effect until you cycle power on the VLS unit.

Diagnostics Menu

The following items are available under the Diagnostics Menu:

• Error Counters • Event Counters

• Operation Log • Serial Number

• F/W Revision • Position Magazine

• Opn/Cls Drv Dr • Load Medium

• Unload Medium • Unload Drive

For information on these options, refer to Appendix C later in this manual.

Equipment Description 27

Write EEPROM Mode

The Write EEPROM Mode is used whenever you upgrade the VLS firmware. When ADIC releases new firmware for the VLS, complete instructions on using Write EEPROM Mode and performing the upgrade will be included with the new firmware.

28 Equipment Description

OPERATION AND MAINTENANCE

CHAPTER

This Chapter …

p describes normal operation features of the

VLS

p provides details on the media and magazine p explains normal maintenance procedures

Since the drive status

Opensideo

LEDs are located on the top front of the drive, to see them you must be eye-level with the gripper arm of the VLS. Look beyond the arm to the drive.

Inserting the Data Cartridges into the Magazine

The VLS DLT is a highly sophisticated unit composed of one DLT drive along with the robotics that control the drive, magazine and media. No modifications have been made to the drive. The built-in drive status LEDs function as the manufacturer has specified.

Very little routine maintenance is required – apart from cleaning the head whenever the Use Cleaning Tape LED is illuminated on the drive front panel (see Cleaning the Drive Head later in this chapter).

ADIC strongly

recommends that you use ADIC-approved media only.

The magazine for the VLS DLT holds seven DLT cartridges. It includes a clear dust cover to protect the cartridges and for easy storage. See Figure 10. Insert each cartridge into a slot of the magazine making sure that the write-protect switch is toward the top, facing the closed side of the magazine (as illustrated).

magazine

MagazineCover

(towardsVLS)

Closedside of magazin

Write-ProtectSwitch

30 Operation and Maintenance

Figure 10. Magazine for VLS

Be very careful when

handling the magazine. The cartridges can fall out once the cover has been removed.

The open side of the magazine faces the VLS. Make sure each cartridge touches the bottom floor of the magazine.

Do not use wrap-around labels on the individual cartridges. Most labels use a removable adhesive and have a tendency to curl or tear after multiple uses. This can jam the movement of the VLS. Place labels only in the space provided on the cartridge.

Note the following:

p Store magazines (and data cartridges) in a dry, cool

environment. Keep the dust cover on each magazine.

p Never reset or power down your computer or VLS

unit while a function is in process or a tape is moving. In addition to a tape with missing or corrupted data, you may also get tape run-on within the drive (a condition that can produce internal contamination requiring extra cleaning).

p If a power outage occurs during a back-up sequence,

restart your backup from the beginning.

Inserting the Magazine into the VLS

Warning

Due to static the label or other items included in this package will occasionally cling to the DLT cartridge.

Before loading into a drive, ensure that all other items from this package are separated from the cartridge.

Operation and Maintenance 31

Do not attempt to place

a covered magazine onto the VLS carriage.

p Remove the magazine dust cover. You can remove the

cover by pressing the middle of both ends (where it is labeled PUSH) and lifting up (see Figure 9).

p Open the VLS door. (The pick arm must be in the "out"

position before you try inserting a magazine.)

p Holding the magazine by the handle, and at a 45º angle

to the carriage, slip the magazine onto the left side of the carriage, over the left magazine position pin (see Figure

11).

Left Magazine

Positi on Pin

Push the right side of the magazine over the right magazine position pin until you hear a click. See Figure 12.

32 Operation and Maintenance

Figure 11. Placing the Magazine onto the VLS

You may need to apply

downward pressure as you slip the magazine over the right magazine pin and then press the magazine into place with your index finger.

Loading the Magazine

Figure 12. Pushing the Magazine in Place

The magazine will snap into place. If you don't hear a click, make sure that the slot on the right side of the magazine has slipped around the right magazine position pin and is not just sitting on top of it (the magazine will not load correctly in this position).

Once you have placed the magazine on the carriage, the VLS must initiate a loading process. During this procedure the VLS checks and maps the position of each cartridge and makes sure that all cartridges are inserted into the magazine correctly. If you are using the sequential mode the VLS inserts the first cartridge into the drive.

The door must be closed

before the LOAD or UNLOAD functions will activate.

Make sure the magazine is placed correctly on the carriage.

p Close the door and press ALT and then LOAD. The VLS

will initiate the load magazine procedure.

Note

In the sequential mode, if you press UNLOAD before the VLS has finished loading the magazine, the robotics will finish mapping and checking the cartridges and then move the magazine to the unload position (the far right) without inserting a cartridge into the drive.

Operation and Maintenance 33

In random mode, if the VLS has not finished loading the magazine, pressing UNLOAD will have no effect.

Attempting to Load the Magazine with a Cartridge Already in Drive

If your VLS is equipped with firmware version 2.31 or earlier, refer to Appendix C.

Random Mode: If the cartridge was loaded manually, it must be unloaded manually – before you attempt to have the VLS load the magazine. Refer to the next section for manual removal of a cartridge. If the VLS robotics was used to load the cartridge via applications software, attempting to "load magazine" from the keyboard will fail – the unit will remain On-Line.

Sequential Mode: If the cartridge was loaded manually, it must be unloaded manually – before you attempt to have the VLS load the magazine. Refer to the next section for manual removal of a cartridge. If the VLS robotics was used to load the cartridge, the VLS will remember and not allow a "load magazine" from the keyboard. Press ALT and then ENTER to bring the VLS back On-Line.

Manually Removing a Cartridge Loaded in the Drive

Follow this procedure to remove the cartridge from the drive if it was loaded manually, not by the application software or by using the Diagnostics Menu.

p Press ALT and then UNLOAD. This will place the

magazine in the unload position.

34 Operation and Maintenance

p Open the VLS door and remove the magazine by

pressing the Magazine Release.

p Press the UNLOAD button on the drive front panel (see

figure 13 for location).

p Close the VLS door. p On the VLS front panel, first press ALT, then the OPEN

DOOR keys.

p Open the VLS door and remove the ejected cartridge

from the drive.

p If the cartridge was loaded into drive from the magazine

place it back in the correct slot.

p Replace the magazine onto the carriage. p Close the door. You can now initiate the load procedure.

Removing a Cartridge Loaded in the Drive Using the Diagnostics Menu

Use this procedure to load the magazine if there is a cartridge in the drive, and the cartridge was loaded by either the application software or by using the Diagnostics Menu.

p Open the VLS door. p Press the UNLOAD button on the drive front panel (see

figure 13 for location). The drive will prepare the cartridge for ejection.

p Close the VLS door. p To access the Diagnostics Menu, press the MENU

button. The display will read as follows:

Operation and Maintenance 35

p Press to access the Diagnostics Menu. A display

similar to the following will appear:

p Press ENTER to select the Diagnostics Menu. p Press to move to the Opn/Cls Drv Dr option. A

display similar to the following will appear:

p Press ENTER to select the Opn/Cls Drv Dr option. The

drive will eject the cartridge and the pick arm will place it back in the magazine.

p You can now initiate the load procedure.

Removing the Magazine from the VLS

If your VLS is equipped with firmware version 2.31 or earlier, refer to Appendix C.

36 Operation and Maintenance

You cannot initiate an

and (UNLOAD) buttons.

(UNLOAD), or remove the magazine, if the door is locked. When the locked LED is on, the VLS ignores the (LOAD)

Before physically removing the magazine from the carriage, you must first initiate the UNLOAD procedure.

p Make sure there is no cartridge in the drive. If there is,

go to the next procedure, Removing the Magazine with a Cartridge in Drive.

p Press ALT and then UNLOAD and wait until the unload

procedure is finished. (If the carriage is not in the unload position, it will move to the right. In addition, the grippers on the pick arm will close.)

p Press the Magazine Release on the carriage. The

magazine will release from the holding pins.

M a g az in e R e le a se

Make sure you have labeled each cartridge as to magazine and slot number. The magazine slots do not restrain the cartridges, and if you tip or drop the magazine, the cartridges will fall out.

Figure 14. The Magazine Release

p Grab the thumb handle on the magazine and pull the

right side of the magazine toward you. The magazine will come out at a 30º- 40º angle.

p Place the transparent cover over the magazine and store

the unit in a cool, dry place.

Operation and Maintenance 37

Removing the Magazine while a Cartridge is in the Drive

If you wish to remove the magazine but there is a cartridge in the drive, do the following:

p Open the VLS door. p Press the UNLOAD button on the drive front panel (see

figure 13).

p Close the door of the VLS. p Press ALT and then UNLOAD. The arm will return the

cartridge to the magazine slot and the VLS will move the magazine to the unload position.

p Remove the magazine as noted earlier.

Loading an Individual Cartridge

If your VLS is equipped with firmware version 2.31 or earlier, refer to Appendix C.

If for some reason you need to use a single cartridge, you can load it manually or semi-automatically, using the VLS robotics controlled by the Diagnostics Menu.

Manually Loading a Cartridge

p Unload the magazine by pressing ALT and then

UNLOAD. The magazine will move completely to the

right.

p Open the door and remove the magazine from the

carriage. (See instructions in previous section Removing the Magazine from the VLS).

38 Operation and Maintenance

p Close the VLS door. p On the VLS front panel, first press ALT, then the OPEN

DOOR keys.

p Open the VLS door. p Insert the cartridge into the drive opening with the label

facing you and the write-protect switch up.

p Close the VLS door. p On the VLS front panel, first press ALT, then the

CLOSE DOOR keys.

p If the drive does not eject the cartridge when the

program is finished, follow the procedure described in

Manually Unloading a Cartridge Loaded in the Drive

earlier in this chapter.

Semi-automatically Loading a Cartridge

p Take the VLS-DLT to the Off-Line Mode by pressing

the MENU key on the Operator Panel.

p Unload the magazine by pressing ALT and then

UNLOAD. The magazine will move completely to the

right.

p Open the door and remove the magazine from the

carriage. (See instructions in previous section Removing the Magazine from the VLS).

p Place the cartridge that you want to use into an empty

slot of the magazine.

p Replace the magazine onto the carriage. p Close the VLS door.

Operation and Maintenance 39

p Load the magazine by pressing ALT and then LOAD.

The VLS will map the magazine.

p Use the key to scroll the display to the

Diagnostic Menu option.

The display will now show:

p Press the ENTER key to select the Diagnostic Menu.

Use the key to scroll the display to the LOAD MEDIUM option.

The display will now show:

Use the key to move to the Slot field. Use the or keys to select the slot you want to load from. Press ENTER. The VLS will load the cartridge into the drive.

If the drive does not automatically eject the cartridge when the program is finished, follow the procedure described in Manually Removing a Cartridge Loaded in the Drive earlier in this chapter.

p Return the VLS DLT to On-Line Mode by pressing

MENU.

Your VLS DLT library is once again ready for use.

40 Operation and Maintenance

Unloading an Individual Cartridge

Semi-automatically Unloading a Cartridge

If you have used the VLS robotics and the Diagnostics Menu to load a single cartridge, you should unload it the same way.

Note

Observe the drive status on the display. The VLS should be displaying the slot number of the magazine that you previously loaded the cartridge from. If it is not, you should not use this procedure to unload the cartridge. Instead, follow the instructions in Manually Removing a Cartridge Loaded in the Drive earlier in this chapter.

p Take the VLS-DLT to the Off-Line Mode by pressing

the MENU key on the Operator Panel.

p Use the key to scroll the display to the

Diagnostic Menu option.

The display will now show:

p Press the ENTER key to select the Diagnostic Menu.

Note

The VLS knows which slot to return the cartridge to, it is not necessary to position the magazine, the VLS will do this automatically.

Operation and Maintenance 41

p Open the VLS door. p Press the UNLOAD button on the drive front panel (see

figure 13).

p Close the VLS door.

Use the key to scroll the display to the UNLOAD MEDIUM option.

The display will now show:

Press ENTER. The VLS will unload the cartridge and return it to the magazine.

p Return the VLS DLT to the On-Line Mode by pressing

MENU.

Your VLS DLT library is once again ready for use.

Removing a Cartridge from the Magazine

The data cartridges easily slip into and out of the slots of the magazine. To remove a cartridge, simply grasp it with two fingers and pull up. Make sure each cartridge is labeled so you know the contents (and where it belongs in the magazine sequence).

Remember – Do not use wrap-around labels on the individual cartridges. Most labels use a removable adhesive and have a tendency to curl or tear after multiple uses. This can jam the movement of the VLS. Place labels only in the space provided on the cartridge.

Storing the Magazine

42 Operation and Maintenance

Store magazines in a dry, cool environment. Always keep the dust cover on the magazine.

The removable magazine allows for long-term archiving or off-site safety storage of groups of cartridges.

You can duplex multiple VLS units so your system can mirror data backups on each separate unit. With duplexing you have real time data assurance and the ability to remove one magazine for off-site storage while the other remains for on-line data access.

Cleaning the Drive Head

If your VLS is equipped with firmware version 2.31 or earlier, refer to Appendix C.

Cleaning Tape

The tape heads should be cleaned when the Use Cleaning Tape LED is illuminated on the drive front panel.

Figure 15. DLT Cleaning Tape

Cleaning the head should always be performed as the first step if the Use Cleaning Tape LED is illuminated.

The following table tells you when to use the cleaning tape:

If . . . It means . . . You should . . .

Operation and Maintenance 43

1. The Use Cleaning Tape

LED is illuminated on the Operator Panel

The drive head needs cleaning or the tape is bad

Use the cleaning tape. Load the cleaning tape using the procedure in section Cleaning

Head Procedure

When cleaning is complete, the beeper will sound alerting you to remove the cleaning tape. Use the procedure in subsection

Unloading a Cartridge from Drive to remove the cleaning

tape from the drive.

2. A data cartridge causes the

Use Cleaning Tape LED to be illuminated on the Operator Panel

3. The Use Cleaning Tape

LED remains illuminated on the Operator Panel after you clean the drive head.

4. The Use Cleaning Tape

LED re-illuminates on the Operator Panel after you load the cleaning tape

The data cartridge may be damaged

Your data cartridge may be causing the problem

Cleaning has not been accomplished and the cleaning tape has no remaining cycles available.

Back up the data from this cartridge onto another cartridge, it may be damaged. A damaged cartridge may cause unnecessary use of the cleaning cartridge.

Try another data cartridge.

Replace the cleaning tape.

Caution

Using cloth swabs, cotton swabs, cleaning agents, or unapproved cleaning tapes will void your warranty. Use only an ADIC-approved cleaning tape.

Head Cleaning Procedure

Clean the drive head and tape path whenever the Use Cleaning Tape LED is illuminated. The cleaning

frequency does not depend on the format in which you write and read data.

44 Operation and Maintenance

If your application software cannot, or is not configured to automate the cleaning cycle, follow these cleaning directions carefully to assure that no damage will occur to your VLSDLT, a tape drive, or media.

Some application

packages may allow a magazine slot to be used for a cleaning cartridge and automate its use. Refer to your application software manual.

Please follow these cleaning directions carefully to assure that no damage will occur to the drive, VLS or media.

p Unload the magazine by pressing ALT and then

UNLOAD. The magazine will move completely to the right.

Loading from Dedicated Magazine Slot

If your cleaning tape is inserted in a dedicated magazine slot perform the following steps:

p Take the VLS-DLT to the Off-Line Mode by pressing

the MENU key on the Operator Panel.

p Use the key to scroll the display to the

DIAGNOSTIC MENU option.

The display will now show:

p Press the ENTER key to select the Diagnostic Menu.

Use the key to scroll the display to the LOAD MEDIUM option.

The display will now show:

Use the key to move to the Slot field. Use the or keys to select the slot you want to load the cleaning tape

Operation and Maintenance 45

from. Press ENTER. The VLS will load the tape and the cleaning cycle will begin.

p To confirm that a cleaning was done, check the Use

Cleaning Tape LED on the drive front panel. If the

cleaning cycle was successful, the LED will no longer be illuminated. If the cleaning cycle was not performed, the Use Cleaning Tape LED will still be illuminated.

Returning the Cleaning Tape to the Magazine

p Open the VLS door. p Press the UNLOAD button on the drive front panel (see

figure 13).

p Close the VLS door.

Note

The VLS knows which slot to return the cleaning tape to, it is not necessary to position the magazine, the VLS will do this automatically.

Use the key to scroll the display to the UNLOAD MEDIUM option.

The display will now show:

p Press ENTER. The VLS will unload the cartridge and

return it to the magazine.

p Return the VLS DLT to the On-Line Mode by pressing

MENU.

Your VLS DLT library is once again ready for use.

46 Operation and Maintenance

Caution

Cleaning cartridges are considerably more abrasive to the drive's recording head than standard data cartridges. Usage should be kept within the recommended limits, or the warranty may not be applicable to the affected equipment.

Manually Loading a Cleaning Tape

To load a cleaning tape manually follow these instructions:

p Unload the magazine by pressing ALT and then

UNLOAD. The magazine will move completely to the

right.

p Open the door and remove the magazine from the

carriage. (See instructions in earlier section Removing the Magazine from the VLS).

p Close the door and press ALT, then press the Open

Door key.

p Open the door and insert the cleaning tape into the drive

opening with the label facing you (see Figure 16).

p Close the door and press ALT, then press the Close

Door key.

Operation and Maintenance 47

Figure 16. Inserting the Cleaning Tape

The cleaning cycle will run automatically.

p To confirm that a cleaning was done, check the Use

Cleaning Tape LED on the drive front panel. If the

cleaning cycle was successful, the LED will no longer be illuminated. If the cleaning cycle was not performed, the Use Cleaning Tape LED will still be illuminated.

Removing the Cleaning Tape from the Drive

p Press the UNLOAD button on the drive front panel. p Close the door and press ALT, then press the Open

Door key.

p Open the VLS door, remove the cleaning tape and set it

aside.

p Place the magazine onto the carriage. Close the VLS

door. Press ALT and then LOAD to initiate the load procedure.

Your VLS DLT library is once again ready for use.

48 Operation and Maintenance

Cleaning the Enclosure

The outside of the enclosure can be cleaned with a damp towel. If you use a liquid all-purpose cleaner, apply it to the towel. Do not directly spray the enclosure.

Operation and Maintenance 49

Blank Page

50 Operation and Maintenance

CHAPTER

TROUBLESHOOTING AND DIAGNOSTICS

This Chapter …

p contains some general suggestions to aid

you in solving problems – should you ever run into them.

p includes information on error codes and the

built-in diagnostics.

Installation Problems

Usually, problems encountered during the installation of your library are caused by improper SCSI bus configuration, application software configuration errors or by an OS that has not been correctly configured. If the application software that you are attempting to use is not communicating with your VLS DLT after installation, check the following:

4 SCSI IDs

Make sure that the IDs you selected for the robotics and tape drive are not the same as the ID used by any other SCSI device on that bus, including the host SCSI adapter card.

The length of the VLS

DLT internal SCSI cables is 3 feet. This length must be included in any calculations of cable length.

For a list of compatible

SCSI adapters and application software, call ADIC’s Customer Assistance Center at (206) 883-HELP.

4 SCSI Cabling

Verify that all SCSI cables are securely connected at both ends and that the bail locks are secured. Also, check the length and integrity of your SCSI cabling. The total length of all SCSI cables must not exceed

19.7 feet (6.0 meters) for single-ended configurations and 82 feet (25 meters) for differential configurations. Try replacing suspected cables with known good cables.

4 Termination

Check that all SCSI buses are properly terminated.

4 Compatibility

Ensure sure that your library and its tape drives are compatible with the SCSI adapter card and application software you plan to use.

4 SCSI Adapter Card Installation

Verify that you have installed your SCSI adapter card correctly. Refer to the documentation that came with your card for installation and troubleshooting instructions. Pay particular attention to any steps describing the settings of various jumpers and/or

52 Troubleshooting and Diagnostics

switches on the card. Check that the card is seated fully in your computers I/O connector.

4 Application Software Installation

Refer to the documentation included with your software for instructions on how to verify installation.

Library and Drive Operational Problems

Most problems with the operation of your VLS and/or DLT drive happen when the drive is not cleaned regularly or when you use incorrect data cartridges. If you have been successfully operating the application software and library in the past, but are now experiencing problems reading and writing data, check the following:

4 If you are writing data, make sure that the cartridge

is write enabled (move the write-protect switch to the enabled position).

4 Check the data cartridge you are using. The

DLT4000 and DLT7000 drives can use DLTTape III, DLTTape IIIXT, and DLTTape IV cartridges.

4 If the cartridge has been in use for a long time or if it

has been used frequently, try using a new cartridge.

4 Clean the drive head.

Troubleshooting and Diagnostics 53

Library Error Messages

If any component of the VLS is not communicating correctly, a warning message will appear on the front display.

In all cases, after removing the cause of the problem (or if you can't find a cause) push MENU to return the VLS DLT to the On-Line Mode.

Most error messages are self-explanatory and give a good indication of the problem. If the error message does not clearly indicate what the problem may be, try to return to the On-Line Mode by pressing ALT and/or ENTER. If that does not work, or if the error message reappears, call the ADIC Customer Assistance and be prepared to tell them what the error message is – and what the conditions are (see When You Call ADIC Customer Assistance later in this chapter).

54 Troubleshooting and Diagnostics

Drive Status and Warning Signals

Normally, the Operator Panel will display error messages that describe a problem with a drive. The following table of drive LED messages is provided as additional information.

Label Color State Operating Condition LED

(Right Indicator Panel) Write Protected

Tape in Use

Use Cleaning Tape

Operate Handle

Orange ON

OFF

Yellow Blinking

Yellow ON

Remains on after unloading cleaning tape

After cleaning, turns on again when reloading data cartridge

Green ON

OFF

Tape is write-protected. Tape is write-enabled.

Tape is moving. Tape is loaded; ready for use.

Drive head needs cleaning, or the tape is bad.

Cleaning attempted, but tape expired, so cleaning not performed.

Problem data cartridge. Try another cartridge.

OK to operate the Cartridge Insert/Release Handle.

Do not operate the Cartridge Insert/Release Handle.

All Right Indicator Panel LEDs or,

All Left Indicator Panel LEDs



Blinking

POST is starting.

An error has occurred.

(continued on next page)

Troubleshooting and Diagnostics 55

Label Color State Operating Condition LED

(Left Indicator Panel)

2.6 (DLTTape III)

6.0 (DLTTape III)

10.0 (DLTTape III)

15.0 (DLT2000XT drive)

20.0 (DLT4000 drive)

70.0 (DLT7000 drive)

Compress

Yellow ON

Blinking

Yellow ON

Blinking

Yellow ON (default)

Blinking Blinking

Blinking

Yellow ON

OFF

Tape is recorded in 2.6 format. Tape is recorded in another density.

You selected this density for a write from BOT.

Tape is recorded in 6.0 format. Tape is recorded in another density.

You selected this density for a write from BOT.

Tape is recorded in 10.0 format. Tape is recorded in 15.0 format Tape is recorded in 20.0 format. Tape is recorded in 70.0 format. Tape is recorded in another density.

You selected this density for a write from BOT.

Compression mode enabled. (Compression can be done only in

10.0, 15.0, or 20.0 density.)

Density Override

All Right Indicator Panel LEDs, or, all Left Indicator Panel LEDs

56 Troubleshooting and Diagnostics

Yellow ON

OFF (default)

Blinking



Blinking A POST error has occurred.

Compression mode disabled.

You selected a density from the front panel.

Density will be selected by the host (automatic).

You are in density selection mode.

RIGHTSID E

INDICATORPANEL

LE FT SIDE

INDICATORPANEL

Figure 17. DLT Drive Status LEDs (DLT4000 shown)

CA RTRI DGE

INSERT/RELEAS

HANDLE(DOWN)

DE NSITYSELEC

BUTTON

Use Cleaning Tape Drive LED

If an excessive number of read-after-write errors are detected during normal operation of a DLT drive, the Use Cleaning Tape warning will be displayed on the Operator Panel and the Use Cleaning Tape LED will be turned on by the drive.

Usually, the Use Cleaning Tape LED is illuminated by the drive because of a dirty head, so the head should be cleaned (see Cleaning the Drive Head in Chapter 5, Operation and Maintenance, earlier in this manual) and the operation tried again.

If the Use Cleaning Tape LED is again turned on, and this seems to be a cartridge rather than a drive problem, make sure that all the data on that cartridge is backed up to a new cartridge by doing a complete backup from the source

Troubleshooting and Diagnostics 57

drive, if necessary. Then discard the old cartridge. If you are unsure of the problem source, call ADIC Customer Assistance (for more information see When You Need Assistance later in this chapter).

The Use Cleaning Tape LED is normally turned off by executing a cleaning cycle or by cycling power to the VLS DLT.

Causes of the Use Cleaning Tape LED

The Use Cleaning Tape LED will be turned on whenever the drive has determined that low level error performance has degraded to a point where drive head cleaning is absolutely required. It does this by counting the number of C3 (soft) errors as well as the RAW (Read After Write) errors over a number of Mbytes. When a predetermined error rate threshold is reached, the Operator Panel and drive both display the warning. Some drive types display the warning after a specified number of hours of tape motion have been logged. When a tape is loaded, it may take several minutes for the indication to come on because the drive will wait for a specific number of bytes to be written. A hard (non-recoverable) error will cause the warning to be displayed immediately.

The most common reasons that the Use Cleaning Tape LED gets turned on for, in order of highest rate of occurrence, are listed below:

p Dirty ("Stained") heads.

A cleaning cycle must be executed to clear this indication.

p Worn tape.

DLT tapes are rated at 500,000 passes. Applications that overwrite small blocks of data cause "shoe shining"

58 Troubleshooting and Diagnostics

of the tape against the head and will reach the 500,000 passes sooner than might be expected.

p Bad environment.

Placing a CRT monitor on top of, or directly next to, a VLS DLT should always be avoided.

Example:

Data errors result from a number of factors, each of which subtract from the margin between good data recovery and an error. Electrical or magnetic interference can decrease this margin. High levels of dust contamination, high humidity, and heat can also be significant factors.

p Worn heads.

The tape heads will eventually wear out causing the time between cleanings to get shorter and shorter. Tape head failure is usually predicted at about 12% of the MTBF rating ( 12,000 hours).

p Defective drive.

Drive amplifier settings could be off, causing error rate degradation. The drive could simply have failed.

Troubleshooting and Diagnostics 59

Environmental Considerations

For best performance of your VLS, please observe the following guidelines:

p If you expose cartridges to temperatures outside the

operating limits – 40-113°F (5-40°C) – stabilize them by leaving the cartridges in the operating temperature for a minimum of two hours before you use them.

p Avoid temperature problems by ensuring that the

VLS's rear and bottom are not obstructed, so that the drive has adequate ventilation.

p Position the VLS where the temperature is relatively

stable (i.e. away from open windows, fan heaters and doors).

p Avoid leaving cartridges in severe temperature

conditions, for example, in a car standing in bright sunlight.

p Avoid transferring data (reading from and writing to

cartridges) when the temperature is changing by more than 20ºF (10ºC) per hour.

When You Call ADIC Customer Assistance

Before calling ADIC Customer Assistance, follow these steps – which will help you take full advantage of your call:

p Review all documentation carefully. (Experience

has demonstrated that most questions are answered in your documentation.)

60 Troubleshooting and Diagnostics

p Be prepared to explain whether the software or

hardware has worked properly at anytime in the past. Have you changed anything recently?

p Pinpoint the exact location of your problem, if

possible. Note the steps that led to the problem. Are you able to duplicate the same problem or is it a one-time occurrence?

p Note any error messages displayed on your PC or

file server screen. Write down the exact error message.

p If at all possible, call while at your computer, with

ADIC's system installed and turned on.

p If running on a network, have all relevant

information available (i.e. type, version #, network hardware, etc.).

Be prepared to provide:

p Your name and your Company's name p Model number p Serial number of unit (located on the rear face by the

power switch)

p Software version numbers

– device driver – archive/restore

p Hardware configuration, including firmware

version, date and number.

p Type of PC, DOS version, clock speed, RAM,

network type, network version, and any special boards installed

p Type and brand of media

Troubleshooting and Diagnostics 61

p A brief description of the problem p Where you purchased the ADIC system

Call ADIC Customer

Assistance at (206) 883-4357.

Return for Repair RMA (Return Merchandise Authorization)

Be sure you have tried

all trouble shooting techniques in the various manuals.

Having this information available when you call for customer assistance will enable ADIC to resolve your problem in the most efficient manner possible. Then call the Customer Assistance line.

When you and ADIC Customer Assistance have determined that you need an RMA (see previous section When You Call ADIC Customer Assistance), be prepared with the following information:

p Model number, serial number, and a brief, descriptive

explanation of the problem.

p Complete address information (be sure you give any

mail stops or special codes at the time the RMA is issued).

p If the item is NOT in warranty, you will be charged for

the repairs. Therefore, the Customer Assistance personnel will need a P.O. number at the time the RMA number is issued. Until credit information can be obtained by our accounting department, the system may be shipped back COD to first-time customers.

p It is also necessary to send the complete system,

including the SCSI interface card/controller, interface cables, and the unit. Problems may have been caused by a defective external component and/or the drive itself.

p Current labor rates will be quoted at the time the RMA

is issued.

62 Troubleshooting and Diagnostics

Following these RMA procedures will help ADIC expedite the handling, repairs and return of your equipment.

Loaner or replacement systems are generally NOT available. In extreme circumstances, they may be arranged for, depending on the nature of the problem and past history with the customer.

Keep the RMA number as a reference if you call to check on the status of an open RMA. It MUST also be written on the outside of the package for identification purposes.

Troubleshooting and Diagnostics 63

Notes

64 Troubleshooting and Diagnostics

APPENDIX

INSTALLING THE FERRITE BEAD

This Appendix …

p describes how to install a ferrite bead

(supplied) on the SCSI cable to assure compliance with EMI/RFI suppression specifications with dual VLS installations.

If you are using two or more VLS units on the same SCSI

channel, you must install a ferrite bead on the interface cable between the units.

p Clip the clamp-on bead on the cable at any point

between the two units. Refer to Figure 18.

All SCSI interface cables must be shielded and ADIC-approved.

2 VLS units

*Fe rrite Be ad

Term inator

SC S I Interfac e C able

I/O C onn ectors

Host Com p uter

Figure 18. Installing the Ferrite Bead

The ferrite bead is required to satisfy the EMI/RFI suppression limits. The bead does not affect the functionality of your system in any way.

(O n sa me

SC S I

Ch a n n e l)

66 Installing the Ferrite Bead

APPENDIX

DIAGNOSTICS MENU

This Appendix …

p describes the built-in diagnostic functions as

available via the Diagnostics Menu

One of the most valuable features of ADIC's VLS series is the extensive built-in diagnostics. In this Appendix we discuss each of the Diagnostic functions available through the front panel keypad.

To access the Diagnostics Menu, press the MENU key. The display will read as follows:

Press to access the Diagnostics Menu. Press ENTER; a display similar to the following will appear:

The following items are available under the Diagnostics Menu:

• Error Counters • Event Counters

• Operation Log • Serial Number

• F/W Revision • Position Magazine

• Opn/Cls Drv Dr • Load Medium

• Unload Medium • Unload Drive

Error Counters

68 Diagnostics Menu

Use or to scroll through the list. Press ENTER to choose a particular function.

Use the ESC button to return to a previous menu (or to abandon current change).

A chronological listing (beginning with the last error issued) of the errors encountered by the VLS system. These are VLS internal hardware/firmware errors. This register records each error name and assigns it a sequential number.

nnnnnnnn = Counter name ccccc = Counter value (0 - 65535)

Event Counters

A listing of the various VLS operations and how many times they have occurred.

nnnnnnnn = Counter name ccccc = Counter value (0 - 65535)

Operation Log

Provides a chronological logging (beginning with the latest) of up to 255 operations. These operations can be SCSI commands, operator requested operations, errors, and status operations. This information can be vital for trouble shooting problems. The following is a partial listing of some of the loggable operations. You may encounter other operations not included here.

NNN = Logged operation number (1-255).

When log is full, new operations are logged in as operation 255, scrolling the old operation 1 off the log

Power on or user reset

Diagnostics Menu 69

Unit on-line due to user request Unit off-line due to user request Cmd: 03 00 00 00 20 00 (cmd from SCSI host adapter) SCSI selection by SCSI ID N (N = host SCSI ID) SCSI reselection of SCSI ID N SCSI disconnect from SCSI ID N SCSI status = 00h (status to SCSI host adapter) Load magazine Unload magazine Door opened Door closed Position magazine to slot ss (ss = 01- 11) Load from slot ss to drive d Unload from d to slot ss ERROR: Can’t unload, media in drive(s) ERROR: Source location empty

Firmware Revision

70 Diagnostics Menu

ERROR: Unexpected Gripper Arm Sensor brk Retrying operation

Provides a record of the internal revision date and number. This information is vital for trouble shooting problems. Be prepared to provide this information to ADIC's Customer Assistance personnel if you ever need to talk with them. The following chart shows what each character in the sequence means.

VV = Major version number (00-99)

vv = Minor version number (00-99) mm = Build-date month (01 - 12) dd = Build-date day (01 - 31) yy = Build-date year (00 - 99) cccc = Internal checksum (0000 - FFFF)

Serial Number

Provides a record of the unit's unique hardware serial number. This information is vital for trouble shooting problems. Be prepared to provide this information to ADIC's Customer Assistance personnel if you ever need to talk with them. The following chart shows what each character in the sequence means.

cc = Model code ss = Sequence number y = Year code (one digit only) m = Month code (one digit only) dd = Day code r = Revision level l = Modification level

Diagnostics Menu 71

Position Magazine

Use the Position Magazine function to line up the magazine with the drive at a particular slot. Select the slot number

using or . Press ENTER to activate.

ss = Slot number (01 - 07)

Opn/Cls Drv Dr

The Operate Handle LED

must be illuminated before attempting to open or close the door.

Use the Opn/Cls Drv Dr function to open or close the cartridge door on the drive. Press ENTER to activate.

Load Medium

The Load Medium function is used to line up the magazine with a the drive at a particular magazine slot and load that cartridge.

Use or to select the desired field. Select the slot and/or drive using or . Press ENTER to activate.

d = Drive (A) ss = Slot number (01 - 07)

72 Diagnostics Menu

Unload Medium

The VLS assumes that

the cartridge you are trying to unload is ejected from the drive.

The Unload Medium function is used to line up the magazine with a the drive at a particular slot so that the cartridge will be placed in that slot.

Use or to select the desired field. Select the slot using

or . Press ENTER to activate.

d = Drive (A) ss = Slot number (01 - 07)

Unload Drive

The Unload Drive function provides a message prompting the operator to manually eject media from the drive and then returns the media to the magazine, or informs the operator that the drive is empty.

If the VLS thinks that media is present in the drive it will perform the following steps:

1. Verifies appropriate magazine slot is empty.

2. Aligns magazine slot with cartridge window.

3. Displays message: “Manually eject media

4. Waits until door is opened, then closed (because

operator should have opened door, pressed eject button on drive, then closed door).

5. Checks that cartridge in transit sensor detects

presence of media (because drive ejected cartridge).

6. Returns media to magazine.

Diagnostics Menu 73

If the VLS thinks that the drive is empty it will display: “All

74 Diagnostics Menu

APPENDIX

DOWNLOADING NEW FIRMWARE

This Appendix …

p explains the procedure for upgrading your

VLS firmware.

Another of the special features built into the VLS series of ADIC products is the ability to upgrade firmware and builtin diagnostics at your installation site.

The process is simple. As upgrades become available upgrade diskettes will be provided along with all necessary instructions. Upgrading requires a PC and a SCSI interface with ASPI drivers. Current upgrade information and code will be available on ADIC's BBS.

76 Downloading New Firmware

GLOSSARY

APPENDIX

This Appendix …

p contains terms and definitions of

expressions commonly used with the VLS and the DLT drive.

byte

8 bits of digital data

C cartridge

cleaning cartridge cm DLT cartridge

DLT4000 DLT7000

FCC ferrite bead

Celsius (Centigrade)

A storage medium item. A cartridge is sometimes called a tape or cassette and is capable of storing vast amounts of magnetically-written data. Some cartridges can store more than 30 gigabytes of data.

Media used to clean the drive head and tape path.

centimeter (0.3937 inches)

Media used in the VLS DLT unit. It uses data-quality ½-inch metal-particle tape. These cartridges require no formatting or other media conditioning before use. These cartridges must be ADIC approved.

Drive used in the VLS DLT. They are digital streaming tape device subsystems.

Federal Communications Commission

A device required to suppress radio noise in certain conditions to meet FCC specifications.

GB HSM

Hz initiator

78 Glossary

gigabyte (1 GB = 1,024 Megabytes)

Hierarchical Storage Management – a system where different types of storage media are used based on cost and time efficiency. For example, for fastest access, data is usually stored on a local hard drive. If you have a very large file that is needed occasionally, you may store it on a tape in a VLS magazine, or on an optical drive. In an HSM system, the data source should be transparent to the user.

Hertz (replacement for "cycles-per-second").

A host computer system that requests an operation to be performed by a target device.

kilobyte (1 KB = 1,024 bytes)

keypad

LCD

LED

load

magazine

MB mm

Front panel on the VLS with 8 buttons used to activate the various functions of the VLS.

Liquid Crystal Display, a commonly used alphanumeric display that responds to specified input voltages and signals.

Light Emitting Diode, a commonly used semiconductor device that glows when supplied with a specified voltage.

The process where the VLS checks each slot to see if a cartridge is physically present, and if so, whether the orientation of the cartridge in the magazine is correct. It also places the magazine in position for the first cartridge to be inserted into the drive. In sequential mode, the first cartridge is physically inserted into the drive.

The item that holds the tape cartridges for use by the VLS. The VLS DLT magazine holds 7 cartridges. The magazine also provides long-term covered storage of cartridges.

megabyte (1 MB = 1,024 Kilobytes)

millimeter (0.03937 inches)

POST

random-access mode

RMA RMA number

Power-On Self-Test is a built-in self-test for the DLT drive. POST automatically occurs each time the VLS powers up.

Gives the software the ability to communicate with the robotics in such a way as to be able to access the cartridges in the magazine (and data on the cartridges) in any order. (See also, sequential-access mode.)

Return Merchandise Authorization.

An identifying number given to a customer who needs to return equipment for repair, whether under warranty or not.

Glossary 79

SCSI

Small Computer System Interface. An industry standard for connecting peripheral devices and their controllers to a microprocessor. The SCSI defines both hardware and software standards for communication between a host computer and a peripheral.

SCSI address

SCSI bus

sequential-access mode

slot

terminator

The octal representation of the unique address (0 to 7) assigned to a SCSI device.

Signal path or line shared by the devices on the same SCSI channel. Information is sent to all devices throughout the same bus; only the device to which it is addressed will accept or respond to it.

The cartridges in the magazine are inserted into the drive in a sequential manner, i.e. number 1 is first, number 2 is second, etc. When the last cartridge is ejected from the drive, the sequence will either stop and the VLS will issue an error message, or loop back to the first cartridge. (See also, random-access mode.)

The place within the magazine where the media is placed. Each slot has a reference position, i.e. position 1 through position 7.

A physical block that tells the SCSI bus that this is the end of the line. A terminator is required at both ends of a SCSI bus. A bus may be terminated internally (on a device inside the host system) or externally on a peripheral device.

unload

VLS

80 Glossary

The process that returns the magazine to its resting position where it can be removed from the VLS unit.

Virtual Library System

SPECIFICATIONS

APPENDIX

This Appendix …

p contains specification information on the

VLS and the DLT drive.

Specifications

Drive

Type: Quantum DLT4000

Data Transfer Rate: Up to 210 MB/min (DLT4000)

Load Time: 20 seconds

Changer

Quantum DLT7000

Up to 600 MB/min (DLT7000)

Magazine: Media type: Cartridge Change: 10 seconds, maximum Indicators/Controls: 8-button keypad with LCD menu display, POWER LED

Interface: SCSI 2 Magazine capacity:

7 Cartridges DLT ½-inch metal-particle cartridges

and LOCKED LED to monitor and control system status, diagnostics and configuration. 8-button keypad with LCD menu display, POWER LED and LOCKED LED to monitor and control system status, diagnostics and configuration.

140GB (DLT4000, native mode) 245GB (DLT7000, native mode)

DLT4000 40GB maximum data, per cartridge, compression ratio of 2:1; 280GB per seven cartridges

DLT7000 70GB maximum data, per cartridge, compression ratio of 2:1; 490GB per seven cartridges

82 Specifications

Reliability

Physical

Power Consumption

Environment

Maintenance:

Use cleaning tape whenever Use Cleaning Tape LED on drive front panel is illuminated

MSBF: Greater than 100,000 cartridge changes (net, drive and

media) MTBF: MTTR:

More than 50,000 power-on hours

Within 30 minutes

Dimensions: 17.4" (w) x 20.0" (d) x 8.0" (h) Weight: 30 lb.

Less than 65 Watts

Electrical: 100-240 VAC

Automatic AC line voltage selection Temperature: 5° C to 40° C (Operating)

-40° C to 70° C (Storage/Shipping)

Humidity: 20% to 80% (Operating)

5% to 95% (Storage/Shipping) Vibration: 0.25g (5-500 Hz) (Operating)

0.5g (5-500 Hz) (Storage/Shipping)

Shock: 2g Operating

30g Storage/Shipping

Specifications 83

Notes

84 Specifications

INDEX

—#—

10.0 format, 56

15.0 format, 56

2.6 format, 56

20.0 format, 56

6.0 format, 56

70.0 format, 56

—A—

alarm mode, 23 alarm sound, 23 application software, 26, 45, 52, 53 application software installation, 53 archiving, 43 ASPI drivers, 76

cleaning confirmation, 46, 48 cleaning cycle, 48, 58 cleaning cycles, 8 cleaning frequency, 45 cleaning tape, 8, 43 cleaning the drive head, 30, 43 Cleaning the Enclosure, 49 Close Drive Door, 27 Compression mode, 56 Configuration Menu, 22, 23 connecting multiple VLS units, 13 Connecting the Interface Cables, 12 Copyright, ii, iii customer assistance, 8, 12, 58, 60, 62, 70,

—D—

—B—

backup, 7 backup software, xii, 2, 3, 15 bail locks, 12, 52 buzzer configuration, 24 Buzzer Configuration, 22, 23

—C—

carriage, xi, 18, 32, 33, 35, 37, 39, 40, 47,

cartridge, 25, 78 Cartridge Change Time, 82 Cartridge Insert/Release Handle, 55 cartridge label, 47 cartridge labels, 42 Causes for the Use Cleaning Tape LED,

Changer Indicators/Controls, 82 Changer Interface, 82 Changer Magazine Capacity, 82 cleaning cartridge, 44, 45, 78 cleaning cartridges, 47

data cartridges, 7 Declaration of Conformity, v Density Override, 56 density selection mode, 56 Diagnostics Menu, 22, 27, 36, 38, 40, 41,

45, 68 differential SCSI bus, 4 dimensions, 83 DLT cartridge, 5 DLT media, 5, 6 Drive Capacity and Transfer Rate, 4 drive eject button, 73 drive front panel, 8, 56 Drive Load Time, 82 drive maximum capacity, 4 drive maximum data transfer rate, 4 Drive Operational Problems, 53 Drive Status, 55 drive status LEDs, 30 Drive Transfer Rate, 82 Drive Type, 82 Drive Warning Signals, 55 duplexing, 43

86 Index

dust cover, 5, 32, 43

—E—

electrical environment, 83 EMI/RFI Compliance, iv EMI/RFI limit specifications, iv EMI/RFI suppression limits, 66 environmental considerations, 60 Equipment Description, 4 Error Counters, 22, 27, 68 error message, 54, 61

—F—

FCC specifications, 78 ferrite bead, 13, 66, 78 Firmware Revision, 22, 27, 68, 70 front panel keypad, 4, 68, 79, 82 Front Panel LCD Display, 19, 79 Front Panel Locked LED, 19 Front Panel MENU key, 19, 23, 36, 54 Front Panel Power LED, 19 Front Panel Switches and Indicators, 18

interface cable, iv, 12, 13, 20, 62, 66 interference, iv, 59

—J—

jack screws, 12

—L—

labels, 31 left magazine position pin, xi, 32 Library Error Messages, 54 Library Operational Problems, 53 Load Magazine, 70 Load Medium, 22, 27, 40, 45, 72 Loading Cleaning Cartridge from

Dedicated Storage Slot, 45 Loading Individual Cartridge, 38 Loading Magazine with Cartridge in

Drive, 34 loading the magazine, 33 LOCKED LED, 82

—M—

—H—

Head Cleaning Procedure, 45 hierarchical storage management, 2, 78 host computer, x, xii, 9, 12, 14, 15, 18, 78,

HSM, 2, 78 humidity, 59, 83

—I—

I/O connector, 9 inserting data cartridges into magazine, 30 Inserting Magazine into VLS, 31 Inserting the Magazine, 31 Installation Problems, 52 Installing the Backup Software, 15

magazine, xi, xii, 4, 5, 18, 19, 25, 30, 31,

32, 33, 34, 35, 36, 37, 38, 39, 40, 42,

43, 45, 47, 48, 72, 73, 78, 79, 80

Magazine capacity, 82 magazine release, 37 Main Menu, 21 Main Menu selections, 21 maintenance, 83 Manually Loading Cartridge, 39 Manually Loading Cleaning Tape, 47 Manually Removing Cartridge from

Drive, 35 Manually Removing Cartridge Loaded in

Drive, 40, 41 Manually Removing Cleaning Tape from

Drive, 46, 48

Index 87

Manually Unloading Cartridge in Drive,

mean swaps between failures (MSBF), 83 mean time between failures (MTBF), 83 mean time to repair (MTTR), 83 Media Type, 82 Mode of operation, 3, 14

—N—

necessary tools, 3

—O—

Off-Line Menu, 23 Off-Line Mode, 25, 39, 41, 45 Off-line Time, 22, 25 On-line Mode, 22, 25, 41, 42, 47, 54 Open/Close Drive Door, 22, 36, 72 Operate Handle LED, 55 operating environment, 3 operating mode, 14, 26 operating temperature, 60 Operation Log, 22, 27, 68, 69

—P—

packing materials, 4 PC power switch, 9 pick arm, 18, 19, 32, 36, 37 Position Magazine, 22, 27, 70, 72 POST, 55, 56, 79 power consumption, 83 POWER LED, 82 Preparing the Host Computer, 9 Product Sign-On, 22, 26, 27

—Q—

quick start guide, ix

—R—

random-access mode, 3, 25, 26, 34, 79 rear panel power connector, 20 rear panel power switch, 20 rear panel SCSI I/O connectors, 20 Rear Panel Switches and Connectors, 20 Removing Cartridge from Drive Using

Diagnostics Menu, 35 Removing Cartridge from Magazine, 42 Removing Magazine from VLS, 37, 39,

40, 47 Removing Magazine with Cartridge in

Drive, 37, 38 return merchandise authorization, 62, 79 right magazine position pin, xi, 32, 33 RMA, 62, 79 RMA number, 62, 63, 79 routine maintenance, 30

—S—

SCSI adapter, 3 SCSI Adapter Card Installation, 52 SCSI address, 14, 80 SCSI bus configuration, 52 SCSI buses, 52 SCSI cable, 12, 52 SCSI chain, x, 9 SCSI channel, iv, 13, 14, 20, 66, 80 SCSI commands, 69 SCSI connector, x, 13 SCSI controller, 3 SCSI device, 13, 14, 52 SCSI host adapter, 9, 70 SCSI ID, x, 52, 70 SCSI ID configuration, 22, 24 SCSI interface, 9, 62, 76 SCSI interface cable, x, 3, 12 SCSI Parity, 22, 25 SCSI Termination, 52

88 Index

Quantum VLS DLT User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual