Compaq DLT User manual

Compaq DLT User Guide
User Guide
Second Edition (March 1998)
Part Number 185292-002
Compaq Computer Corporation

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C
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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 publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer
Corporation.
The software described in this guide is furnished under a license agreement or non disclosure
agreement. The software may be used or copied only in accordance with the terms of the agreement.
This publication does not constitute an endorsement of the product or products that were tested. The
configuration or configurations tested or described may or may not be the only available solution. This
test is not a determination of product quality or correctness, nor does it ensure compliance with any
federal, state, or local requirements. Compaq does not warrant products other than its own strictly as
stated in Compaq product warranties.
Product names mentioned herein may be trademarks and/or registered trademarks of their respective
companies.
1997 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Compaq Insight Manager, and SmartStart,
Registered United States Patent and Trademark Office.
ProLiant, ProSignia, and Systempro/XL are trademarks of Compaq Computer Corporation.
Microsoft and Windows are registered trademarks of Microsoft Corporation.
Windows NT and Windows 95 are trademarks of Microsoft Corporation.
Compaq DLT Drive User Guide
Second Edition (March 1997)
Part Number 185292-002

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iii
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Contents
Preface
About This Guide
How This Guide is Organized ..................................................................................vii
Conventions Used in This Guide.............................................................................viii
Symbols on Equipment ...........................................................................................viii
General Warnings and Cautions................................................................................ix
Chapter 1
Overview
Tape Formats..........................................................................................................1-1
Data Compression...................................................................................................1-1
SCSI-2 Controller Requirements.............................................................................1-2
Chapter 2
Installing an Internal DLT Drive
SCSI-2 Controller Requirements.............................................................................2-1
Software and Tool Requirements.............................................................................2-1
Setting the SCSI ID.................................................................................................2-2
Preparing the Server ...............................................................................................2-3
Installing the DLT Drive.........................................................................................2-4
Reassembling the Server .........................................................................................2-5
Completing the Installation.....................................................................................2-6

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Chapter 3
Connecting an External DLT Drive
Preparing the Drive.................................................................................................3-1
SCSI-2 Controller Requirements.............................................................................3-2
Setting the SCSI ID.................................................................................................3-2
Connecting the Drive..............................................................................................3-4
Daisy Chaining.......................................................................................................3-5
Daisy-Chaining Storage Devices Together........................................................3-5
Chapter 4
Installing the Software Drivers
Device Drivers........................................................................................................4-1
NetWare .................................................................................................................4-2
ASPI Support..........................................................................................................4-3
Microsoft Windows NT...........................................................................................4-5
Microsoft Windows 95............................................................................................4-6
SCO UNIX .............................................................................................................4-7
UnixWare ...............................................................................................................4-8
OS/2 .......................................................................................................................4-9
Banyan VINES .....................................................................................................4-10
Chapter 5
Operating the DLT Drive
Front Panel .............................................................................................................5-1
Front Panel Indicators.............................................................................................5-3
Front Panel Controls...............................................................................................5-5
Power-On Self-Test (POST)....................................................................................5-6
Loading and Unloading a Tape Cartridge...............................................................5-6
Selecting Drive Density...........................................................................................5-8
Density Select Example....................................................................................5-9

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Operating the DLT Drive continued
Tape Cartridge Write-Protect Switch.....................................................................5-10
Cartridge Compatibility ........................................................................................5-11
Cartridge Handling and Storage............................................................................5-11
Chapter 6
Tape Drive Cleaning
Chapter 7
Troubleshooting
Updating the Firmware on the DLT TapeDrive ................................................7-3
Interpreting the Results of Firmware Update ....................................................7-5
Appendix A
Power Cord Set Requirements
General Requirements...........................................................................................A-1
Country-Specific Requirements..............................................................................A-2
Appendix B
Electrostatic Discharge
Preventing Electrostatic Damage........................................................................... B-1
Grounding Methods .............................................................................................. B-1
Appendix C
Getting Help
Compaq Web Site ................................................................................................. C-1
Telephone Numbers..............................................................................................C-1

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Appendix D
Supplemental Information About SCO UNIX
Configuration Requirements .................................................................................D-1
Appendix E
Regulatory Compliance Notices
Federal Communications Commission Notice ....................................................... E-1
Modifications................................................................................................. E-1
Cables............................................................................................................ E-2
Canadian Notice (Avis Canadien)......................................................................... E-2
Class B Equipment......................................................................................... E-2
European Union Notice......................................................................................... E-2
Japanese Notice..................................................................................................... E-3
Index

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vii
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Preface
About This Guide
This user guide provides information for installing, configuring, operating and
cleaning the Compaq DLT Drive. For instructions on using the DLT Drive,
please refer to the manual that came with your drive.
How This Guide is Organized
Chapter 1, “Introduction,” provides an overview of the DLT Drive and
installation requirements.
Chapter 2, “Installing an Internal DLT Drive,” provides instructions for the
installation of the Compaq DLT Drive in Compaq servers.
Chapter 3, “Connecting an External DLT Drive,” provides instructions for the
installation of the Compaq DLT Drive as an external unit.
Chapter 4, “Installing the Software Drivers,” covers procedures for the
installation of software drivers to complete the drive installation.
Chapter 5, “Tape Drive Operations,” provides instructions for operating the
DLT Drive efficiently.
Chapter 6, “Tape Drive Cleaning,” describes the cleaning procedure.
Chapter 7, “Troubleshooting,” provides suggestions for problem solving
before and after tape drive installation.
Appendix A,“Power Cord Requirements,” provides the power cord
set requirements.
Appendix B, “Electrostatic Discharge,” provides information on avoiding
electrostatic damage and suggestions for grounding methods.
Appendix C, “Getting Help,” has additional information on the Compaq
Forum of CompuServe and QuickFind.
Appendix D, “Supplemental Information About SCO UNIX,” covers SCO
UNIX configuration requirements and using Legato under SCO UNIX.
Appendix E, “Regulatory Compliance Notices,” contains the compliance
statements from the various worldwide agencies regulating this product.

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viii About This Guide
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Conventions Used in This Guide
Conventions used in this guide are listed below.
WARNING:
Indicates that failure to follow directions in the warning could result
in bodily harm or loss of life.
CAUTION:
Indicates that failure to follow directions could result in damage to
equipment or loss of information.
IMPORTANT: Presents clarifying information or specific instructions.
NOTE : Presents commentary, sidelights, or interesting points of information.
Symbols on Equipment
These icons may be located on equipment in areas where hazardous
conditions may exist.
An
y
surface or area of the e
q
ui
p
ment marked with these s
y
mbols
indicates the
p
resence of electrical shock hazards. Enclosed area
contains no o
p
erator serviceable
p
arts.
WARNING: To avoid risk of injury from electrical shock hazards, do not
open this enclosure.
An
y
surface or area of the e
q
ui
p
ment marked with these s
y
mbols
indicates the
p
resence of a hot surface or hot com
p
onent. If this
surface is contacted, the
p
otential for in
j
ur
y
exists.
WARNING: To avoid risk of injury from a hot component, allow the
surface to cool before touching.

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General Warnings and Cautions
WARNING: Com
p
a
q
ProLiant 2000, 4000, 4500 and 5000 are ca
p
able
of
p
roducin
g
ener
gy
levels that are considered hazardous. Users should
not remove enclosures nor should the
y
b
yp
ass the interlocks
p
rovided for
removal of these hazardous conditions.
Installation of accessories and o
p
tions in areas other than front hot
p
lu
g
ba
y
s should be
p
erformed b
y
individuals who are both
q
ualified in the
servicin
g
of com
p
uter e
q
ui
p
ment and trained in the hazards associated
with products capable of producing hazardous energy levels.
WARNING: To reduce the risk of
p
ersonal in
j
ur
y
from hot surfaces,
allow the internal system components to cool before touching them.
WARNING: To reduce the risk of electric shock or dama
g
etothe
equipment:
■
Do not disable the
p
ower cord
g
roundin
gp
lu
g
. The
g
roundin
gp
lu
g
is
an important safety feature.
■
Plu
g
the
p
ower cord into a
g
rounded (earthed) electrical outlet that is
easily accessible at all times.
Disconnect
p
ower from the
p
roduct b
y
un
p
lu
gg
in
g
the
p
ower cord from
either the electrical outlet or the computer or other product

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WARNING: To reduce the risk of electric shock or dama
g
etothe
equipment:
■
Do not
p
lace an
y
thin
g
on
p
ower cords or cables. Arran
g
e them so that
no one may accidentally step or trip over them.
■
Do not
p
ull on a cord or cable. When un
p
lu
gg
in
g
from the electrical
outlet, grasp the cord by the plug.
CAUTION: Placin
g
a hand or ob
j
ect other than a ta
p
e cartrid
g
e into the
DLT Drive may damage the tape drive.

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Chapter 1
Overview
This chapter provides information on tape formats, data compression, and
system and controller requirements for all Compaq DLT Drives and formats.
For information on tape software, refer to the “readme” card enclosed with the
drive. More information may also be obtained by accessing the Compaq Web
Site on the Internet at http://www. compaq.com.
Tape Formats
The Compaq DLT Drive is a high-capacity, high-performance streaming tape
drive designed for use with Compaq servers. The DLT Drive is a full-height
tape drive with a 5-1/4-inch form factor. The DLT Drive has a multi-channel
read/write head, utilizes a Digital Lempel-Ziv (DLZ) high efficiency data
compression algorithm, and has a filing system to maximize data and
minimize data access time.
The DLT Drive uses a half-inch tape cartridge compatible with the DLT Tape,
DLT Tape II, DLT Tape III, DLT Tape IIIXT and DLT Tape IV..
Data Compression
The DLT Drive reads and writes both uncompressed (native) and DLZ
compressed data. The 15/30 DLT model features a native formatted capacity of
15 gigabytes and a sustained native data transfer rate of 1.25 megabytes per
second (MB/s). The 35/70 DLT model has a native formatted capacity of
35 gigabytes and a sustained native data transfer rate of 5.0 MB/s.
When operating in compressed mode, data capacity is affected by how much
the data can be compressed. Most data can be compressed at an approximate
2:1 ratio. For instance, data compressed at a 2:1 ratio would provide a total
drive capacity of 30 GB for the 15/30 DLT Drive and 70 GB for the 35/70
DLT Drive.

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Overview
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The maximum transfer rate with data compression ranges from 2.50 MB/s for
the 15/30 DLT Tape Drive to 10.0 MB/s for the 35/70 DLT Tape Drive. To
achieve these maximum data transfer rates, the data compression ratio must be
greater than 2:1 and you must have software that supports the higher transfer
rate.
SCSI-2 Controller Requirements
Some servers require the installation of the Compaq 32-Bit Fast-SCSI-2 or
higher controller for use with the 15/30 DLT Drive or the Fast-Wide SCSI-2 or
higher controller for use with the 35/70 DLT Drive. Install the controller
before beginning the drive installation using the documentation included with
the controller.
Table 1-1 shows which controllers support DLT drives.
IMPORTANT: All SCSI devices on the same bus must either be internal
(within the server) or in an external stora
g
e device, but not both. The
exce
p
tion is a CD-ROM drive which ma
y
be internal when other devices are
external or vice versa.
Table 1-1
Supporting Controllers
Controller 15/30 DLT Drive 35/70 DLT Drive
32-Bit Fast-SCSI-2 Supported Supported (not recommended)
32-Bit Fast-Wide SCSI-2 Supported Supported
Wide-Ultra SCSI Supported Supported

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Chapter 2
Installing an Internal
DLT Drive
This chapter describes the procedure to install a Compaq DLT Drive in a
Compaq Server.
Installation involves the following steps:
■ Setting the SCSI ID
■ Preparing the server
■ Installing the DLT Drive
■ Reassembling the server
■ Completing the installation
SCSI-2 Controller Requirements
It is recommended that the server be equipped with a 32-Bit Fast-SCSI-2 or
higher controller for a 10/15 or 15/30-GB DLT Drive.
A 32-Bit Fast-Wide SCSI Controller is recommended for the 35/70-GB DLT
Drive.
Software and Tool Requirements
The following items are required for Compaq DLT Tape Drive installation:
■ Torx-T15 screwdriver
■ Compaq SmartStart and Support Software CD

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Setting the SCSI ID
The first step in the installation process is setting the SCSI ID.
Each SCSI device on the same SCSI bus must have a unique SCSI ID. Use the
jumper block on the back of the tape drive to set the SCSI ID. DLT drives ship
with 6 as the default SCSI ID.
To set the SCSI ID for an internal DLT Drive, position the jumpers as shown
in Figure 2-1.
NOTE : Your DLT Drive may look slightly different than the illustrations.
DLT3-005.EPS
SCSI
Connector
Loader
Connector
Remote
ID
Present
Bit 2
Disable
Parity
DLT Models
10/20 and 15/30
Bit 1
Bit 0 Remote
ID
Present
Bit 2
Reserved
DLT Model
35/70
Bit 1
Bit 0
Bit 2
1
1
1
0
0
0
0
Bit 1
1
0
0
1
1
0
0
Address
6
5
4
3
2
1
0
Bit 0
0
1
0
1
0
1
0
Figure 2-1. Setting the SCSI ID Jumpers on an internal GB DLT Drive

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Preparing the Server
To prepare the server:
1. Perform a normal system shutdown according to your network and
operating system requirements.
2. Turn OFF the server and then all peripheral devices.
3. Disconnect the AC power cord from the outlet, then from the server and
all peripheral devices.
CAUTION: Electrostatic dischar
g
e (ESD) can dama
g
e electronic
com
p
onents. Be sure
y
ou are
p
ro
p
erl
yg
rounded before be
g
innin
g
this
p
rocedure. See A
pp
endix B, Electrostatic Dischar
g
e, for further
information.

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Installing an Internal DLT Drive
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Installing the DLT Drive
Refer to the documentation included with your computer for instructions on
accessing the removable media drive bays. Your computer may differ slightly
from the following illustrations.
To install the DLT Drive:
1. Install tape drive in an available media bay.
DLT_059.EPS
Write
Protected
Tape in Use
Use
Cleaning Tape
Operate
Handle
Density
Overide
Density
Select
6.0 15.030.0Compress
2.6
Unload
Figure 2-2. Installing the DLT Drive

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2. Connect an available power cable and the SCSI signal cable.
IMPORTANT: The SCSI si
g
nal cable recommended for Com
p
a
q
servers
is terminated.
DLT_039.EPS
Power Connector
SCSI Connector
Figure 2-3. Attaching the Cables
Reassembling the Server
To reassemble the server:
1. Replace the side or top access panel.
2. Reconnect the peripheral devices to the server.
WARNING: To reduce the risk of electric shock or dama
g
eto
y
our
e
q
ui
p
ment, do not disable the
p
ower cord
g
roundin
g
feature. This
e
q
ui
p
ment is desi
g
ned for connection to a
g
rounded (earthed)
p
ower
outlet. The grounding plug is an important safety feature.
3. Plug the AC power cord into the server, then plug the cord into a
grounded AC outlet.
4. Turn ON any peripheral devices connected to the server.
5. Turn ON the server.

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Installing an Internal DLT Drive
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Completing the Installation
Follow the procedure in Chapter 4, “Installing the Software Drivers,” to install
the driver supported by your operating system.

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3-1
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Chapter 3
Connecting an External
DLT Drive
This section describes how to connect an external DLT Drive to a SCSI
controller.
Connecting the drive involves the following steps:
■ Preparing the drive
■ Setting the SCSI ID
■ Connecting the drive
NOTE : Your External DLT Drive may look slightly different than
the illustrations.
DLT_001.EPS
Write
Protected
Tape in Use
Use
Cleaning Tape
Operate
Handle
6.0 15.0
Compress
Density
Overide
Density
Select
Unload
2.6
Figure 3-1. External DLT Drive
Preparing the Drive
NOTE : No tools are needed for installation of the DLT Drive.
1. Place the DLT Drive on a flat, sturdy surface such as a desk or tabletop.

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NOTE: Do not place the unit on the floor. Allow enough space for proper
ventilation and easy access to the front and rear of the DLT Drive. Allow at
least 3 inches (7.6 cm) between rear of unit and wall.
2. Check the SCSI ID.
NOTE: The drive is factory set to SCSI ID 6.
SCSI-2 Controller Requirements
It is recommended that the server be equipped with a 32-Bit Fast-SCSI-2 or
higher Controller for a 10/20-GB DLT or 15/30-GB DLT Drive.
A 32-Bit Fast-Wide SCSI-2 or higher controller is recommended for the
35/70-GB DLT Drive.
IMPORTANT: All SCSI devices on the same bus must either be internal (within the
server) or in an external stora
g
e device, but not both. The exce
p
tion is a CD-ROM drive
which may be internal when other devices are external or vice versa.
Setting the SCSI ID
Each SCSI device on the same SCSI bus must have a unique SCSI ID. You
must avoid duplicating SCSI ID when assigning the ID for the DLT Drive.
Using the factory-set SCSI ID with Compaq storage devices is an effective way
to prevent ID duplication. The DLT Drive ships with 6 as the default
SCSI ID.
WARNING: Risk of electrical shock. Do not attem
p
ttoo
p
en this
p
roduct. There are no user serviceable
p
arts inside. Refer all
service to an Authorized Service Provider.
!