Digital Equipment TZS20 Series User manual

TZS20 25/50 GB
AIT Cassette Tape Drive
User's Guide
EK–TZS20–UG. B01
Digital Equipment Corporation
Maynard, Massachusetts

Second Edition, May 1997
The information in this document is subject to change without notice and should not be
construed as a commitment by Digital Equipment Corporation. Digital Equipment
Corporation assumes no responsibility for any errors that may appear in this document.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to
restrictions as set forth in subparagraph (c) (1) (ii) of the Rights in Technical Data and
Computer Software clause at DFARS 252.227-7013.
Digital Equipment Corporation does not give a warranty of any kind regarding the
fitness or applicability of the information content for a particular purpose. The user
assumes all responsibility for understanding the interrelationships of this enclosed
information with other affected software or system products.
The disclosure of this information does not grant to the user a license under any patents,
pending patents, trademarks, or copyrights or other rights of Digital Equipment
Corporation, or of any third party.
The following FCC and VCCI notices apply to the table top TZS20. Embedded versions
of the drive will be covered in similar notices in documentation for the system, or
storage enclosure in which the embedded drive resides.
FCC Notice:
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.
Any modifications to this device - unless expressly approved by the manufacturer - can
void the user’s authority to operate this equipment under part 15 of the FCC rules.
Operation is subject to the following two conditions: (1) This device may not cause
harmful interference and (2) This device must accept any interference that may cause
undesirable operation.

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
The table top drive requires shielded interface cables in order to comply with FCC
emission limits.
VCCI Notice for Japan:
UNIX is a registered trademark in the United States and other countries, licensed
exclusively through X/Open Company, Ltd.
The following are trademarks of Digital Equipment Corporation:
AXP, DEC, DECdirect, DECservice, DIGITAL, OpenVMS, SERVICenter, TZS20,
VAX, VMS, and the DIGITAL Logo.
© Digital Equipment Corporation 1997 All Rights Reserved
Printed in U. S. A

EK–TZS20–UG. B01 v
Contents
Revision Record.................................................................................................................vii
About This Manual...........................................................................................................ix
1 Introduction
1.1 Product Overview................................................................................................... 1–1
1.2 Data Compression.................................................................................................. 1–1
1.3 Operating System Support...................................................................................... 1–2
1.4 TZS20 Models........................................................................................................ 1–3
2 Installing the Tape Drive
2.1 Unpacking the Tape Drive...................................................................................... 2–1
2.2 Installing the TZS20 Embedded (Internal) Tape Drive............................................ 2–1
2.3 Installing the TZS20-DB Tabletop (External) Tape Drive....................................... 2–5
2.4 Installing and Removing the SBB Tape Drive ........................................................ 2–6
2.5 Verifying the Installation of the Tape Drive ........................................................... 2–6
3 Operating the Tape Drive
3.1 Controls and Indicators .......................................................................................... 3–1
3.2 Summary of Tape Drive LED Indications............................................................... 3–3
3.3 Powering Up the Tape Drive .................................................................................. 3–4
3.4 Setting the Write-protect Switch............................................................................. 3–5
3.5 Loading a Cartridge into the Drive......................................................................... 3–6
3.6 Removing the Tape Cartridge from the Tape Drive ................................................ 3–7
3.7 Media Error Rate Warning..................................................................................... 3–7
4 Care, Maintenance and Problem Solving
4.1 Cleaning the Tape Drive Head................................................................................ 4–1
4.2 Taking Care of Tape Cartridges.............................................................................. 4–2
4.3 Tape Drive Problem Solving .................................................................................. 4–2
4.4 Emergency Tape Removal Procedure..................................................................... 4–3
4.5 Service Offerings ................................................................................................... 4–4

TZS20 AIT Cassette Tape Drive – User’s Guide
EK–TZS20–UG. B01vi
Appendix A
Supplies........................................................................................................................A–1
Appendix B
Specifications ...............................................................................................................B–1
Appendix C
Supported SCSI Messages and Commands....................................................................C–1
Readers Comment Form .......................................................................Inside Back Cover
Figures
1–1 DS-TZS20-DB Tabletop Tape Drive........................................................................ 1–3
1–2 Front View of TZS20-AB Embedded Tape Drive..................................................... 1–3
1–3 DS-TZS20-VB StorageWorks SBB Unit.................................................................. 1–4
2–1 Setting the SCSI ID, Embedded Tape Drive............................................................. 2–2
2–2 Option Switch Settings............................................................................................ 2–4
2–3 Connecting the DS-TZS20-DB Tabletop Model....................................................... 2–5
3–1 TZS20 Tabletop Tape Drive .................................................................................... 3–1
3–2 Setting the Write-protect Switch on the Tape Cartridge........................................... 3–5
3–3 Inserting the Tape Cartridge .................................................................................... 3–6
3–4 Removing the Tape Cartridge.................................................................................. 3–7
4–1 Emergency Tape Cartridge Removal Procedure....................................................... 4–4
Tables
2–1 SCSI ID Jumper Settings......................................................................................... 2–3
2–2 Option Switch Descriptions ..................................................................................... 2–4
3–1 Possible LED Indications and Their Meaning.......................................................... 3–3
3–2 Power On Self Test LED Display Sequence............................................................. 3–4

EK–TZS20–UG. B01 vii
Revision Record
This Revision Record provides a concise publication history of this guide. It lists the
guide revision levels, release dates, and reasons for the revisions.
The following revision history lists all revisions of this publication and their effective
dates. The publication part number is included in the Revision Level column, with the
last entry denoting the latest revision. This publication supports the TZS20 AIT
Cassette Tape Drive.
Revision Level Date Summary of Changes
EK–TZS20–UG. A01 April, 1997 Initial release
EK–TZS20–UG. B01 May, 1997 Update and add regulatory
information

EK–TZS20–UG. B01 ix
About This Manual
This manual describes the installation and operation of the TZS20 AIT Cassette
Tape Drive.
Visit Our Web Site for the Latest Information
Check our web for the latest drivers, technical tips, and documentation. We can be
found in the technical area of our web page, http://www.storage.digital.com/
Audience
This guide supports the user of the TZS20 Cassette Tape Drive. You should be familiar
with tape drive terminology and the use of PCs and workstations.
Document Organization
This guide contains the following:
Chapter 1: Introduction
Chapter 1 provides an overview of the TZS20 and identifies the products covered
in this manual.
Chapter 2: Installing the Tape Drive
Chapter 2 provides instructions on how to install and configure the tape drive
models covered in this guide, including instructions on how to set the SCSI ID.
Chapter 3: Operating the Tape Drive
Chapter 3 addresses operating procedures and controls and indicators.
Chapter 4: Care, Maintenance and Problem Resolution
Chapter 4 describes tape drive head cleaning, tape cartridge care, and provides
solutions to common tape drive and media problems.
Appendix A: Supplies
Appendix A provides ordering numbers for the tape head cleaning cartridge and
data cartridges.
Appendix B: Specifications
Appendix B lists the physical, electrical, and environmental specifications for the
TZS20 tape drive.

TZS20 AIT Cassette Tape Drive – User’s Guide
x EK–TZS20–UG. B01
Appendix C: Supported SCSI Messages and Commands
Appendix C lists TZS20 tape drive supported SCSI commands and messages.
Conventions
This guide uses the following conventions:
Table 1 Style Conventions
Style Meaning
boldface type For emphasis
italic type For emphasis and manual titles
monospace type Screen text, file names, path names,
directories, commands and utilities