Compaq 326817-003 User Manual
Compaq DAT AutoLoader
Reference Guide
Third Edition (January 2000)
Part Number 326817-003
Compaq Computer Corporation
Notice
The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR
USE OF THIS MATERIAL. THIS INFORMATION IS PROVIDED “AS IS” AND COMPAQ
COMPUTER CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR
STATUTORY AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE AND AGAINST
INFRINGEMENT.
This publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.
© 2000 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
The software described in this guide is furnished under a license agreement or nondisclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement.
Compaq, Deskpro, Fastart, Compaq Insight Manager, Systempro, Systempro/LT, ProLiant, ROMPaq,
SmartStart, ProSignia, registered United States Patent and Trademark Office.
Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation.
Pentium is a registered trademark and Xeon is a trademark of Intel Corporation.
Other product names mentioned herein may be trademarks and/or registered trademarks of their
respective companies.
Compaq DAT AutoLoader Reference Guide
Third Edition (January 2000)
Part Number 326817-003
Contents
About This Guide
Text Conventions.......................................................................................................vii
Symbols in Text....................................................................................................... viii
Symbols on Equipment............................................................................................ viii
Rack Stability .............................................................................................................ix
Getting Help ................................................................................................................x
Compaq Technical Support ..................................................................................x
Compaq Website ..................................................................................................x
Compaq Authorized Reseller................................................................................x
Chapter 1
Overview
Introduction to the DAT AutoLoader ...................................................................... 1-1
Features.................................................................................................................... 1-2
The SCSI Interface .................................................................................................. 1-3
Controller Requirements................................................................................... 1-3
Reliability of Backup Devices ................................................................................. 1-3
Projected Duty Cycle........................................................................................ 1-4
Capacity................................................................................................................... 1-4
Data Compression ............................................................................................ 1-4
Cassette Formats...................................................................................................... 1-5
DDS Logo Media ............................................................................................. 1-6
Write-Protecting a Cassette .............................................................................. 1-7
Life Expectancy of Cassettes............................................................................ 1-7
iv
Chapter 2
Installation
DAT AutoLoader Installation .................................................................................. 2-1
Software and Tool Requirements...................................................................... 2-1
Setting the SCSI ID........................................................................................... 2-3
Switch Settings......................................................................................................... 2-3
Preparing the Computer ........................................................................................... 2-6
Installing the DAT AutoLoader ............................................................................... 2-6
Reassembling the Computer .................................................................................... 2-8
Connecting the Tabletop AutoLoader...................................................................... 2-9
Completing the Installation.................................................................................... 2-10
Chapter 3
Installing Software Drivers
Device Drivers ......................................................................................................... 3-1
Microsoft Windows NT ........................................................................................... 3-2
Novell NetWare ....................................................................................................... 3-3
ASPI Support ........................................................................................................... 3-3
Compaq Tru64 UNIX .............................................................................................. 3-4
OpenVMS ................................................................................................................ 3-4
SCO OpenServer...................................................................................................... 3-4
Configuring the SCSI ID for SCO OpenServer................................................ 3-5
SCO UnixWare ........................................................................................................ 3-6
SunSoft Solaris......................................................................................................... 3-7
Banyan VINES......................................................................................................... 3-8
Chapter 4
Operation
Introduction to Magazines and Cassettes................................................................. 4-1
Labeling Cassettes and the Magazine ............................................................... 4-2
Loading the Magazine with Cassettes...................................................................... 4-2
Eight-Cassette Configuration............................................................................ 4-3
Seven-Cassette Configuration........................................................................... 4-4
Single-Cassette Configuration .......................................................................... 4-4
To Load the Magazine With Cassettes..............................................................4-5
Loading the Magazine into the AutoLoader ............................................................ 4-6
Removing the Cassettes from the Magazine............................................................ 4-6
Ejecting the Magazine ...................................................................................... 4-7
Modes of Operation .................................................................................................4-9
Front Panel............................................................................................................. 4-10
Liquid Crystal Display (LCD) ...............................................................................4-11
LCD Messages....................................................................................................... 4-12
LCD Menu Screens................................................................................................ 4-16
Chapter 5
Cleaning
Importance of Routine Cleaning.............................................................................. 5-1
Errors Resulting from Cleaning Neglect.................................................................. 5-2
Importance of Compaq-Approved Tape Cassettes .................................................. 5-3
DAT AutoLoader Cleaning Recommendations....................................................... 5-3
Procedure for Cleaning the Heads in Stacker Mode................................................ 5-4
Procedure for Cleaning the Heads in Random Mode .............................................. 5-4
Chapter 6
Troubleshooting
Quick Checklist ....................................................................................................... 6-1
Hardware .......................................................................................................... 6-1
Software............................................................................................................ 6-2
Installation Troubleshooting.................................................................................... 6-3
Troubleshooting After Installation........................................................................... 6-4
For Tru64 Unix................................................................................................. 6-4
For Novell NetWare ......................................................................................... 6-4
For Microsoft Windows NT Systems............................................................... 6-5
For SCO OpenServer Systems.......................................................................... 6-5
For IBM OS/2 Systems..................................................................................... 6-6
Resolving Operating Problems ................................................................................ 6-6
Resolving Magazine Problems ................................................................................ 6-6
Correcting Intermittent Failures............................................................................... 6-7
v
Appendix A
Regulatory Compliance Notices
Regulatory Compliance Identification Numbers .....................................................A-1
Federal Communications Commission Notice ........................................................A-1
Class B Equipment ...........................................................................................A-2
Modifications....................................................................................................A-3
Canadian Notice (Avis Canadien) ...........................................................................A-4
Class B Equipment ...........................................................................................A-4
European Union Notice ...........................................................................................A-4
Japanese Notice .......................................................................................................A-5
Taiwanese Notice.....................................................................................................A-5
Appendix B
Electrostatic Discharge
Grounding Methods.................................................................................................B-2
vi
Appendix C
Specifications
Dimensions and Weight.......................................................................................... C-1
Temperature and Humidity Range.......................................................................... C-2
Power Requirements ............................................................................................... C-2
Air-Cooling Requirement ....................................................................................... C-2
Suspended Particulate ............................................................................................. C-3
Index
This guide is designed to be used as step-by-step instructions for installation
and as a reference for operation, troubleshooting, and future upgrades.
Text Conventions
This document uses the following conventions to distinguish elements of text:
Keys
About This Guide
Keys appear in boldface. A plus sign (+) between
two keys indicates that they should be pressed
simultaneously.
USER INPUT
FILENAMES
Menu Options,
Command Names,
Dialog Box Names
COMMANDS,
DIRECTORY NAMES,
and DRIVE NAMES
Type When you are instructed to
Enter When you are instructed to
User input appears in a different typeface and in
uppercase.
File names appear in uppercase italics.
These elements appear in initial capital letters.
These elements appear in uppercase.
the information
the information and then press the
without
pressing the
information, type
type
Enter
information, type
enter
Enter
key.
key.
viii Compaq DAT AutoLoader Reference Guide
Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
WARNING:
in the warning could result in bodily harm or loss of life.
CAUTION:
could result in damage to equipment or loss of information.
IMPORTANT:
instructions.
Text set off in this manner presents commentary, sidelights, or interesting points
NOTE:
of information.
Text set off in this manner indicates that failure to follow directions
Text set off in this manner presents clarifying information or specific
Symbols on Equipment
These icons may be located on equipment in areas where hazardous conditions
may exist.
Any surface or area of the equipment marked with these symbols
indicates the presence of electric shock hazards. Enclosed area
contains no operator-serviceable parts.
WARNING:
do not open this enclosure.
Text set off in this manner indicates that failure to follow directions
To reduce the risk of injury from electric shock hazards,
Any RJ-45 receptacle marked with these symbols indicates a Network
Interface Connection.
WARNING:
equipment, do not plug telephone or telecommunications connectors
into this receptacle.
To reduce the risk of electric shock, fire, or damage to the
About This Guide ix
Any surface or area of the equipment marked with these symbols
indicates the presence of a hot surface or hot component. If this
surface is contacted, the potential for injury exists.
Rack Stability
WARNING:
the surface to cool before touching.
WARNING:
be sure that:
To reduce the risk of injury from a hot component, allow
Power supplies or systems marked with these symbols indicate
the equipment is supplied by multiple sources of power.
WARNING:
remove all power cords to completely disconnect power from
the system.
Any product or assembly marked with these symbols indicates that
the component exceeds the recommended weight for one individual
to handle safely.
WARNING:
equipment, observe local occupational health and safety
requirements and guidelines for manual material handling.
To reduce the risk of personal injury or damage to the equipment,
To reduce the risk of injury from electric shock,
To reduce the risk of personal injury or damage to the
The leveling jacks are extended to the floor.
■
The full weight of the rack rests on the leveling jacks.
■
The stabilizing feet are attached to the rack if it is a single rack
■
installation.
The racks are coupled together in multiple rack installations.
■
A rack may become unstable if more than one component is extended for
■
any reason. Extend only one component at a time.
x Compaq DAT AutoLoader Reference Guide
Getting Help
If you have a problem and have exhausted the information in this guide, you
can get further information and other help in the following locations.
Compaq Technical Support
In North America, call the Compaq Technical Phone Support Center at
1-800-OK-COMPAQ. This service is available 24 hours a day, 7 days a week.
For continuous quality improvement, calls may be recorded or monitored.
Outside North America, call the nearest Compaq Technical Support Phone
Center. Telephone numbers for world wide Technical Support Centers are
listed on the Compaq website. Access the Compaq website by logging on to
the Internet at:
http://www.compaq.com
Be sure to have the following information available before you call Compaq:
Technical support registration number (if applicable)
■
Product serial number
■
Product model name and numbers
■
Applicable error messages
■
Add-on boards or hardware
■
Third-party hardware or software
■
Operating system type and revision level
■
Compaq Website
The Compaq website has information on this product as well as the latest
drivers and Flash ROM images. You can access the Compaq website by
logging on to the Internet at:
http://www.compaq.com
Compaq Authorized Reseller
For the name of your nearest Compaq Authorized Reseller:
In the United States, call 1-800-345-1518.
■
In Canada, call 1-800-263-5868.
■
Elsewhere, see the Compaq website for locations and telephone
■
numbers.
Introduction to the DAT AutoLoader
The Compaq 20/40 Gigabyte (GB) DAT 8-Cassette AutoLoader combines a
changer mechanism with a DDS-4 cassette drive mechanism. The DAT
AutoLoader houses up to eight DDS cassettes in a removable magazine, which
enables you to back up weeks and months of data automatically. High-speed
file retrieval and cassette swapping typically allow access to any file in an
average of 95 seconds. The DAT AutoLoader supports both sequential and
random access modes, with minimum interruption time between cassettes.
Chapter
1
Overview
Figure 1-1. Compaq 20/40 GB DAT 8-Cassette AutoLoader
Compaq DAT AutoLoader Reference Guide
1-2
Features
The Compaq 20/40 GB DAT 8-Cassette AutoLoader offers the following
features:
Any DDS-1, DDS-DC, DDS-2 DDS-3 or DDS-4 cassette can be read or
■
written to, whether data compression is switched on or off.
The drive is capable of additional sophisticated techniques of
■
error-correction for dealing with cassettes, which are not up to
specification.
When using DDS-4 media, the drive reads and writes the DDS-4 format
■
with a much higher capacity.
An improved internal cleaning sweeper reduces the frequency of
■
cleaning the heads by a factor of eight.
The TapeAlert feature allows software and operating systems to warn
■
users of conditions which may occur, such as a cassette nearing the end
of its useful life, and to recommend actions that the user can take to
recover from the situation.
A Liquid Crystal Display (LCD) gives clear and comprehensive
■
indications of the status of the DAT AutoLoader.
A low-cost magazine carrying up to eight DDS cassettes, giving a
■
magazine capacity of 320 gigabytes for DDS-4 cassettes using 2:1 data
compression.
Compatibility with the SCSI-2 Medium Changer command set.
■
A common SCSI-2 interface for the drive and changer.
■
A standard 5 1/4-inch full-height form factor.
■
A cassette odometer displaying the amount of cassette used.
■
The SCSI Interface
The Compaq 20/40 GB DAT 8-Cassette AutoLoader uses SCSI-2 as the
interface to connect the host system.
Overview
1-3
IMPORTANT:
In the information that follows, the term SCSI implies SCSI-2.
The SCSI implementation provides the DAT AutoLoader with a standard set
of features and functions. These include the following:
LVD Wide SCSI connection
■
Synchronous data transfers
■
Asynchronous data transfers
■
Implementation of all mandatory and most optional commands of the
■
Sequential Access command set
Full implementation of mandatory Medium Changer commands
■
Controller Requirements
Compaq recommends equipping the computer with an LVD 32-bit Fast
SCSI-2 Controller or higher. Any of these controllers fully support the
Compaq 20/40 GB DAT 8 Cassette AutoLoader.
IMPORTANT:
computer) or in an external storage device, but not both. The exception is a CD-ROM
drive, which may be internal when other devices are external or vice versa.
All SCSI devices on the same bus must either be internal (within the
Reliability of Backup Devices
The reliability of any backup device is directly related to its duty cycle (the
number of hours per day that the device is in use). For example, if a tape drive
designed for 24-GB backups is being used to back up a 100-GB computer, the
result on that drive will be a need for accelerated preventive maintenance
(especially head cleaning), premature aging, and reliability problems. See
Chapter 5 for more information on cleaning requirements.
Compaq DAT AutoLoader Reference Guide
1-4
Projected Duty Cycle
The projected duty cycle of the Compaq 20/40 GB DAT 8-Cassette
AutoLoader is an important consideration in determining the amount of time
required for backup of a given system, as well as how often it is necessary to
clean the tape drive’s read/write heads.
For example, a nightly, unattended complete 18-GB backup is well within the
capacity of one 20/40 GB DAT drive. However, at a backup rate of
approximately 8GB/hour, that tape drive is in operation for approximately 2
1/4 hours every night of the week. With this amount of usage, the tape drive’s
read/write heads should be cleaned every 4 to 6 weeks. If the drive heads are
not cleaned soft errors and overall backup time increases and eventually
causes the drive to fail.
Capacity
The best method for building hardware reliability into a backup strategy is to
ensure that the backup hardware is matched to the computers. Table 1-1 relates
various computers with the appropriate tape drives. If you need special, partial
backups in addition to the routine backups, select the next larger drive size.
Data Compression
The Compaq 20/40 GB DAT 8-Cassette AutoLoader ships from the factory
with data compression enabled for writing. The drive is equipped with onboard
DDS-DC hardware, using the Data Compression Lempel Ziv (DCLZ)
algorithm. In this mode, data is always compressed when writing to the
cassette, but the drive is capable of reading both compressed and
uncompressed cassettes.
Table 1-1
Tape Drive Capacity
Compaq Tape AutoLoader Computer Capacity
2/4 GB DAT 2-4 GB or less
4/8 GB DAT 4-8 GB or less
12/24 GB DAT 12-24 GB or less
20/40 GB DAT 20-40 GB or less
The DAT AutoLoader uses jumper pins and/or dip switches for settings. Some
hardware settings may be overridden by way of software. Consult your backup
application software documentation for the data compression enabling and
disabling procedure.
For information on jumper pin settings for data compression, see “Configuring
the AutoLoader” in Chapter 2.
Cassette Formats
The Compaq 20/40 GB DAT 8-Cassette AutoLoader supports
industry-standard Digital Data Storage (DDS), Digital Data Storage Data
Compression (DDS-DC), Digital Data Storage-2 (DDS-2), Digital Data
Storage-3 (DDS-3), and Digital Data Storage-4 (DDS-4) formats.
Overview
1-5
IMPORTANT:
purchased from vendors that have been approved by Compaq (See Table 1-2 for list of
approved cassettes).
For product reliability Compaq recommends using only cassettes
These formats were introduced by the DDS Manufacturers’ Group and are
approved by the American National Standards Institute (ANSI) and the
European Computer Manufacturers’ Association (ECMA). The DDS-DC
format is a superset of the DDS format, ensuring backward compatibility with
uncompressed cassettes.
To use the full potential of a DDS-format drive, you should use matching
cassettes, that is, DDS-4 cassettes for DDS-4 drives. This allows the drives to
store the maximum amount of data on a cassette. Refer to Table 1-2 for a list
of Compaq approved cassettes.
Table 1-2
Compaq Approved Cassettes
DDS1 DDS2 DDS3 DDS4
Sony 60m (DG-60M) Sony 125m, (DGD-125m)
Fuji 90m, (DG-90M) Fuji 120m, (DG-120M) Fuji 125m, (DG3-125m) Fuji 150m, (DG4-150m)
Maxell 120m, HS 4/120s Maxell 125m, HS 4/125s Maxell 150m, HS 4/150s
Note:
A DDS-4 drive can read and write to DDS-3, DDS-2, or DDS-1 cassettes.
Compaq DAT AutoLoader Reference Guide
1-6
DDS Logo Media
To identify computer-grade DDS media easily, look for the DDS logos (See
Figure 1-2), including ! DDS-1, " DDS-2, # DDS-3, and $DDS-4. These
indicate that the media meets the DDS specifications laid down by the ECMA,
ISO/IEC and ANSI standards.
Figure 1-2. DDS Logo Media
1
2
3
4
The Media Recognition System (MRS) enables drives to identify DDS-grade
media. DDS MRS cassettes have a series of stripes on the transparent leader at
the beginning of the cassette. The drive can be configured to treat non-MRS
cassettes as write-protected. In other words, the drive is only allowed to read
non-MRS cassettes, not write to them.
Write-Protecting a Cassette
Overview
1-7
IMPORTANT:
updated during the unload procedure. If the cassette is write-protected, the cassette log
will not be updated and will be inaccurate.
The cassette log, which contains a history of usage of the cassette, is
Cassettes can be write-protected by ! sliding the tab on the rear of the cassette
to the left so that the hole is open (See Figure 1-3). In this state, data can be
read from the cassette but not written to it. To remove write-protection, "
slide the tab to the right so that the hole is closed.
1
Figure 1-3. Write-protecting a cassette
(➊ = Write-protection ON, ➋ = Write-protection OFF)
2
Life Expectancy of Cassettes
All DDS-certified media are designed to withstand at least 2000 passes. Under
optimum environmental conditions (50% relative humidity, 22°C), this is
equivalent to about 100 to150 backup operations. The life expectancy takes
into account that an area of a cassette may have several passes during a
backup, either because streaming (the optimum performance rate where data is
sent to the drive at approximately the same speed as it is written to the cassette
media) cannot be maintained, or because the backup software package
repeatedly accesses certain areas of a cassette.
Certain extreme (worst case) conditions reduce the recommended maximum
number of backup operations. These conditions are as follows:
Environmental conditions — Sustained use at the low end of the
■
humidity specification reduces the cassette life.
Compaq DAT AutoLoader Reference Guide
1-8
■
Computer performance — The lower the performance of the computer,
the more likely that streaming cannot be maintained and that an
increase in the number of passes over given areas of a cassette
will occur.
Backup Software — The backup software may frequently access certain
■
areas of a cassette, or there may be a high system overhead that can
cause streaming to stop. Both of these factors increase the number of
cassette passes in a given area.
Because these parameters vary from system to system, it is difficult to give a
definitive statement of the number of backup operations achievable using a
particular cassette.
As a guideline, Compaq recommends using a cassette for approximately 75
backup operations in worst-case conditions such as those listed above.
DAT AutoLoader Installation
This chapter describes the procedure to install a Compaq 20/40 GB DAT
8-Cassette AutoLoader in a Compaq computer. In addition, at the end of the
chapter there are instructions for connecting the tabletop DAT AutoLoader to
a Compaq computer.
Installation involves the following steps:
1. Configuring the DAT AutoLoader
Chapter
2
Installation
2. Preparing the computer
3. Installing the DAT AutoLoader
4. Reassembling the computer
5. Completing the installation
Software and Tool Requirements
The following items are required for Compaq 20/40 GB DAT 8-Cassette
AutoLoader installations:
Torx T-10 screwdriver
■
Torx T-15 screwdriver
■
2-2 Compaq DAT AutoLoader Reference Guide
■
Compaq SmartStart and Support Software CD
■ Configuring the AutoLoader
The default hardware settings are set for a Compaq system (see Figure 2-1).
The settings in the DAT AutoLoader can be changed if required by a particular
system.
Figure 2-1. Autoloader jumper pins
Table 2-1
Hardware Settings
Jumper Description Default
1
2
3
4
5
6
Note: The default SCSI ID is set to 6. For other settings see, Table 2-2
SCSI ID Bit 0 OFF
SCSI ID Bit 1 ON
SCSI ID Bit 2 ON
Reserved OFF
Reserved OFF
Parity Enable ON
Setting the SCSI ID
Each SCSI device on the same SCSI bus must have a unique SCSI ID. Use the
jumper block located on the back of the DAT AutoLoader to set the SCSI ID.
For SCSI ID jumper settings see Table 2-2.
SCSI ID Bit 2 Bit 1 Bit 0
Table 2-2
SCSI Jumper Pins
Installation
2-3
7*
Note:
SCSI ID 7 is reserved for the SCSI controller.
Switch Settings
When the DAT AutoLoader is powered on, it reads a set of configuration
switches on the underside of the drive. See the following sections for switch
descriptions and settings.
0
1
2
3
4
5
6
000
001
010
011
100
101
110
111
Compaq DAT AutoLoader Reference Guide
2-4
Figure 2-2. AutoLoader configuration switches
Switch Number Description Default
1 Reserved OFF
Table 2-3
Switch Settings
2 Reserved OFF
3 Reserved OFF
4 Reserved OFF
5 Terminator Power OFF
6 Reserved OFF
7 DC Control-1 OFF
8 DC Control-2 OFF
Note:
Switch 1 must remain in the OFF position.
Installation
Default setting compression at power-on enable the host to control
compression.
Table 2-4
Data Compression Definitions
DC Control-1 DC Control-2 Definition
OFF OFF Compression disabled at power-on. The host is
allowed to control compression.
OFF ON Compression disabled at power-on. The host is not
allowed to control compression.
ON OFF Compression enabled at power-on. The host is
allowed to control compression.
ON ON Compression enabled at power-on. The host is not
allowed to control compression.
2-5
Compaq DAT AutoLoader Reference Guide
2-6
Preparing the Computer
CAUTION:
sure you are properly grounded before beginning this procedure. See Appendix B,
“Electrostatic Discharge” for further information.
To prepare the computer:
1. Perform a normal system shutdown.
2. Turn OFF the computer and all peripheral devices.
3. Disconnect the AC main power cord from the outlet, then from the
computer and from all peripheral devices.
4. Disassemble the system to expose the drive bay (see documentation
included with your computer for instructions on accessing the
removable media drive bays).
Electrostatic discharge (ESD) can damage electronic components. Be
Installing the DAT AutoLoader
NOTE:
Your computer may differ slightly from the following illustrations.
To install the Autoloader with drive rails:
1. Slide the DAT AutoLoader partially into an available removable media
bay.
Figure 2-3. Installing the DAT AutoLoader with drive rails
Loading...