StorageWorks TZ88 20 GB DLT User manual

TZ88 20/40 GB DLT Cartridge Tape Drive
– StorageWorks Building Block (SWXTL-CA)
– Tabletop Tape Drive (SWXTL-CT)
User’s Guide
EK–SM1TF–UG. A01
Digital Equipment Corporation
Maynard, Massachusetts

First Edition, December 1995
The information in this document is subject to change without notice and should not be construed as a com-
mitment 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.
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 changes or modifications made to this equipment may
void the user’s authority to operate this equipment. The shielded interconnect cable, as supplied with the unit,
may not be substituted, nor altered or modified, in any way.
This equipment generates, uses, and can emit radio frequency energy and, if not installed and used in accor-
dance with the instructions, may cause harmful interferences 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:
• Reorient 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 your reseller or an experienced radio/TV technician for help.
Copyright © Digital Equipment Corporation 1995
All Rights Reserved
Printed in U. S. A
The following are trademarks of Digital Equipment Corporation:
DEC Digital StorageWorks
VMS TZ88 and the Digital Logo:
AIXand IBMare trademarks of International Business Machines, Inc.
HPis a registered trademark of Hewlett-Packard Corporation.
Intelis a registered trademark of Intel Corporation.
NetWareand Novellare trademarks of NOVELL, Inc.
Sun, SunOS, and Solarisare trademarks of Sun Microsystems, Inc.
WINDOWS NTand MS-DOS™ are trademarks of Microsoft Corporation.
All other trademarks and registered trademarks used in this publication are the property of their respective
owners

Order Number: EK–SM1TF–UG. A01 iii
Contents
1 Introduction
1.1 Product Overview..................................................................................................................1–1
1.2 Design Features.....................................................................................................................1–1
1.2.1 Basic Components .............................................................................................................1–1
1.2.2 Performance Considerations...............................................................................................1–1
1.3 Data Tape..............................................................................................................................1–2
1.3.1 CompacTape IVdescription................................................................................................1–2
1.3.2 Cartridge Packaging...........................................................................................................1–3
1.4 Reading and Writing Data.....................................................................................................1–3
1.4.1 Write-Protecting Data........................................................................................................1–3
1.5 Head Cleaning Tape..............................................................................................................1–4
1.5.1 CleaningTape III Description.............................................................................................1–4
1.5.2 CleaningTape III Packaging...............................................................................................1–4
1.5.3 CleaningTape III Cartridge Expiration...............................................................................1–4
1.6 Supplies.................................................................................................................................1–5
1.6.1 Cartridges Provided ...........................................................................................................1–5
1.6.2 How To Order Replacement Cartridges..............................................................................1–5
2 Installation and Operation of the SWXTL-CA Tape Drive in a Storage Subsystem
2.1 Introduction...........................................................................................................................2–1
2.2 Unpacking.............................................................................................................................2–1
2.3 Preinstallation Procedures .....................................................................................................2–2
2.3.1 Setting the SCSI ID Address of the Tape Drive..................................................................2–2
2.4 Installing the SWXTL-CA SBB Tape Drive Into a StorageWorks Expansion
Storage Subsystem.................................................................................................................2–3
2.5 Power On Self Test (POST)...................................................................................................2–4
3 Installation and Operation of the SWXTL-BT Tabletop Tape Drive
3.1 Introduction...........................................................................................................................3–1
3.2 Unpacking.............................................................................................................................3–1
3.3 Preinstallation Procedures .....................................................................................................3–2
3.3.1 Setting the SCSI ID Address of the Tape Drive..................................................................3–2
3.4 Installation of SWXTL-CT Tabletop DLT Tape Drive...........................................................3–4
3.4.1 SWXTL-CT Power On Self Test (POST)...........................................................................3–4

TZ88 Model 20/40 GB DLT Cartridge Tape Drive
iv Order Number: EK–SM1TF–UG. A01
4 Controls, Indicators, and Operation
4.1 General .................................................................................................................................4–1
4.2 Front-Panel Controls and Indicators......................................................................................4–1
4.2.1 Unload Push-Button...........................................................................................................4–2
4.2.2 Cartridge Insert/Release Handle.........................................................................................4–2
4.2.3 DENSITY SELECT Switch.....................................................................................................4–3
4.3 Power-On Self-Test (POST)..................................................................................................4–4
4.4 Status Indication of Tape Drive LEDs....................................................................................4–6
4.5 CompacType IV DLT Tape Cassette......................................................................................4–7
4.5.1 Write-Protect Switch..........................................................................................................4–8
4.5.2 Data Protection..................................................................................................................4–8
4.5.3 Loading A Cartridge..........................................................................................................4–9
4.5.4 Tape in Use...................................................................................................................... 4–11
4.5.5 Unloading A Cartridge.....................................................................................................4–11
4.5.6 Using the Tape Cleaning Cartridge..................................................................................4–12
4.5.7 Preserving Cartridges.......................................................................................................4–12
4.6 Selecting Density.................................................................................................................4–13
4.6.1 How To Select Density At The Front Panel...................................................................... 4–14
4.6.1.1 Selection of Compression Mode...................................................................................4–14
4.6.1.2 Density Select Example................................................................................................ 4–15
4.6.2 Density Selection Rules................................................................................................... 4–15
5 Maintenance
5.1 Introduction...........................................................................................................................5–1
5.2 Common Errors.....................................................................................................................5–1
5.2.1 Avoiding Basic Problems...................................................................................................5–1
5.2.2 Error Influences.................................................................................................................5–1
5.3 Cleaning the Heads................................................................................................................5–2
5.4 Inspections ............................................................................................................................5–3
5.4.1 Checking the Cartridge Leader...........................................................................................5–3
5.4.2 Checking the Drive Leader ................................................................................................5–3
5.5 Troubleshooting ....................................................................................................................5–6
Appendix A Specifications
Appendix B Product Notes for Novell and MS-DOS
B.1 Host SCSI Interface.............................................................................................................. B–1
Appendix C Product Notes for Sun™
C.1 General Information............................................................................................................. C–1
C.2 Modifications Required for SunOS 4.1.x............................................................................... C–1
C.2.1 Installation Procedure ....................................................................................................... C–1
C.2.1.1 System Modification ..................................................................................................... C–1
C.2.1.2 Rebuilding of Kernel.................................................................................................... C–3
C.2.1.3 Installation of Tape Drive.............................................................................................. C–3
C.2.1.4 Rebooting of System..................................................................................................... C–3
C.2.1.5 Testing the TZ88 Model 20/40 GB DLT SBB ............................................................... C–4

Contents
Order Number: EK–SM1TF–UG. A01 v
C.2.1.6 Verification................................................................................................................... C–4
C.2.2 Dump Parameters for the Tape Drive................................................................................ C–4
C.3 Modifications Required for Solaris™ 2.3 (or later) ............................................................... C–5
C.3.1 Installation Procedure ....................................................................................................... C–5
C.3.1.1 System Modification ..................................................................................................... C–5
C.3.1.2 System Shutdown.......................................................................................................... C–6
C.3.1.3 Installation of Tape Drive.............................................................................................. C–6
C.3.1.4 Rebooting of System..................................................................................................... C–7
C.3.1.5 Test............................................................................................................................... C–8
C.3.1.6 Verification................................................................................................................... C–8
C.3.2 Running SUN Diagnostics (Optional) ............................................................................... C–8
C.3.3 Dump Parameters for the Tape Drive................................................................................ C–8
Appendix D Product Notes for IBM™ RS/6000
D.1 Modifications Required to Operate the SWXTL-BA with AIX 3.2.5 (or later)......................D–1
D.1.1 Installing the SWXTL-BA Using the SMIT Command .....................................................D–1
D.1.2 Installing the SWXTL-BA Using Command-Line Interface..............................................D–2
Appendix E Product Notes for Hewlett Packard
E.1 General Information..............................................................................................................E–1
E.2 Modifications Required .........................................................................................................E–1
E.2.1 Installation Procedure ........................................................................................................E–1
E.2.1.1 Installation of Tape Drive...............................................................................................E–1
E.2.1.2 System Modification ......................................................................................................E–1
E.3 Series 700 System Device Files..........................................................................................E–2
E.3.1 HP-UX 9.05....................................................................................................................E–2
E.3.2 HP-UX 10.00..................................................................................................................E–3
E.4 Series 800 System Device Files..........................................................................................E–4
E.4.1 HP-UX 9.05....................................................................................................................E–4
E.4.2 HP-UX 10.00..................................................................................................................E–5
E.5 Testing the Tape Drive.......................................................................................................E–6
E.5.1 Verification....................................................................................................................E–6
E.6 Dump Parameters for the Tape Drive.................................................................................E–6
Figures
1–1 Front Panel of TZ88 Model 20/40-GB DLT Cartridge Tape Drive.................................................1–2
1–2 CompacTape IV Cartridge............................................................................................................1–3
1–3 CompacTape III Cleaning Tape.....................................................................................................1–4
2–1 SWXTL-CA Tape Drive SCSI ID Switches...................................................................................2–2
2–2 Installing the SWXTL-CA into an Expansion Storage Pedestal......................................................2–4
2–3 Tape Drive Front Panel Controls and Indicators.............................................................................2–5
3–1 SWXTL-CT Tape Drive Front Panel Controls and Indicators ........................................................3–4
4–1 Front Panel Layout of 10/20-GB DLT Cartridge Tape Drive..........................................................4–2
4–2 CompacTape IV Data Tape Cartridge............................................................................................4–9
4–3 Loading Cartridge Into Tape Drive.............................................................................................. 4–10
4–4 Unloading Cartridge From Tape Drive.........................................................................................4–12
5–1 Checking Out Cartridge Leader .....................................................................................................5–4
5–2 Correct Engagement of Take-Up Leader in Tape Drive .................................................................5–4
5–3 Correct and Incorrect Positions of Tape Drive Leader....................................................................5–5

TZ88 Model 20/40 GB DLT Cartridge Tape Drive
vi Order Number: EK–SM1TF–UG. A01
Tables
1–1 Ordering Numbers for Cleaning Tape and Data Tapes ...................................................................1–5
2–1 SWXTL-BA Tape Drive SCSI ID Switch Settings.........................................................................2–3
3–1 10/20-GB DLT Cartridge Tape Drive SCSI Interface Cables.........................................................3–2
4–1 Right-side Front Panel Indicators and Controls ..............................................................................4–3
4–2 Left-side Front Panel Indicators and Controls ................................................................................4–4
4–3 Operating States of 10/20-GB DLT Cartridge Tape Drive Unit
Following Initialization..................................................................................................................4–6
4–4 Tape Drive LED Status..................................................................................................................4–7
4–5 Moving Write-Protect switch Before Tape Drive Operation...........................................................4–9
4–6 Moving Write-Protect switch During A Read/Write Operation ......................................................4–9
4–7 What is Happening During Cartridge Use (Right-Side Indicators)................................................ 4–10
4–8 When To Use the Cleaning Cartridge...........................................................................................4–12
4–9 Density Selections Available On 10/20-GB DLT Cartridge Tape Drive.......................................4–13
4–10 Results of Density Selection ........................................................................................................4–16
5–1 Possible Corrections for Common Error Situations ........................................................................5–2
5–2 Troubleshooting Table...................................................................................................................5–6
A–1 10/20-GB DLT Cartridge Tape Drive Specifications.....................................................................A–1
C–1 Density Codes for Sun and Solaris................................................................................................ C–3

Order Number: EK–SM1TF–UG. A01 vii
Revision Record
This Revision Record provides a concise publication history of this guide. It lists the manual revision levels, re-
lease dates, and reasons for the revisions. It also describes how the changes to affected pages are marked in
the guide.
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 StorageWorks SWXTL-BA SBB
and SWXTL-BT Tabletop Cartridge Tape Drives.
Revision Level Date Summary of Changes
EK–SM1TF–UG. A01 December 1995 Original release

Order Number: EK–SM1TF–UG. A01 ix
About This Guide
This section identifies the users of this guide and describes the contents and structure. In addition, it includes a
list of conventions used in this guide.
This guide provides a product overview, installation, operation, and maintenance information
for the StorageWorks SWXTL-CA SBB and/or SWXTL-CT Tabletop DLT Cartridge Tape
Subsystems, both of which contain a TZ88 Model 20/40 GB DLT Cartridge Tape Drive.
Intended Audience
This guide is intended for people who will install, operate, and maintain the StorageWorks
SWXTL-CA SBB and/or SWXTL-CT Tabletop DLT Cartridge Tape Subsystems.
Document Structure
This guide contains the following chapters:
Chapter 1. Introduction
Chapter 1 gives an overview of the TZ88 Model 20/40-GB DLT Cartridge Tape Drive,
describes its components, and discusses the drive features. This chapter provides a product
overview of the 20/40-GB DLT Cartridge Tape Drive and identifies design features
(including basic components and performance considerations). The chapter also includes
overview descriptions of the data tape and cleaning tape cartridges used with this equipment,
defining the basic functions of each, and identifies what is supplied with the tape drive unit.
Chapter 2. Installation and Operation of the SWXTL-CA SBB Tape Drive in a
Storage Subsystem
Chapter 2 provides specific details pertaining to the SWXTL-CA SBB Tape Drive, which is
designed to be operated in a Digital StorageWorks Expansion Storage subsystem. This chap-
ter describes how to unpack the received drive, how to prepare the drive for installation in the
subsystem, how to set the SCSI ID of the tape drive, how to install the device into a Storage-
Works expansion storage subsystem, and how to confirm operation integrity by performing
the Power On Self Test (POST) exercise.
Chapter 3. Installation and Operation of the SWXTL-BT Tabletop Tape Drive
Chapter 3 provides specific details pertaining to the SWXTL-CT SBB Tape Drive, which is
designed to be operated as an independent standalone unit on the desktop, a convenient shelf,
or other flat surface. This chapter describes how to unpack the received SWXTL-BT tabletop
drive, how to prepare the drive for installation, how to set the SCSI ID of the tape drive, how
to perform the Power On Self Test (POST) procedure, and how to connect the tape drive to a
host computer.

TZ88 Model 20/40 DLT Cartridge Tape Drive
x Order Number: EK–SM1TF–UG. A01
Chapter 4. Controls, Indicators, and Operation,
Chapter 4 describes the tape drive’s LED indicators and how to use them to monitor tape
drive operation. This chapter identifies the switches and LED indicators on the front panel of
the TZ88 Model 20/40-GB tape drive, describes how to use them (including operation of the
power-on self-test (POST), provides use rules for the CompacTape IV DLT cartridge data
and cleaning tapes, gives detailed procedures for correct loading and unloading of the tape
cartridges, and explains how to select a desired density format for recording.
Chapter 5. Maintenance
Chapter 5 describes how to clean the heads of the tape drive, and provides a troubleshooting
table to help diagnose common problems. This chapter describes preventive maintenance and
general troubleshooting for the TZ88 Model 20/40-GB DLT Cartridge Tape Drive.
Appendix A. Specifications
Appendix A lists the physical, electrical, cooling, environmental, and environmental stabili-
zation specifications for the tape drive.
Appendix B. Product Notes for Novell™ and MS-DOS™
Appendix B provides information for the system administrator about interfacing the TZ88
20/40-GB DLT Cartridge Tape Drive with a host system operating under the Novell, MS-
DOS, or MS/DOS/WINDOWS operating systems.
Appendix C. Product Notes for Sun™ SunOS 4.1.x and Solaris™ 2.3 Systems
Appendix C provides information for the system administrator about interfacing the TZ88
20/40-GB DLT Cartridge Tape Drive with a Sun SPARC system running SunOS 4.1.x or
Solaris 2.3 (or later). The information covers the installation of the tape drive hardware and
configuring the system to communicate with the drive.
Appendix D. Product Notes for IBM™ AIX™ 3.2.5 (or later) Systems
Appendix D provides information for the system administrator about interfacing the TZ88
20/40-GB DLT Cartridge Tape Drive with an IBM™ RS/6000 system running AIX™ 3.2.5
(or later). The information covers the installation of the SWXTL tape drive hardware and
configuring the system to communicate with the drive.
Appendix E Product Notes for Hewlett-Packard
Appendix E provides information for the system administrator about interfacing the TZ88
20/40-GB DLT Cartridge Tape Drive with an HP 9000 Series 700 system running HP-UX
9.05 (or later) or an HP 9000 Series 800 system running HP-UX 9.04 (or later). The
information covers the installation of the tape drive hardware and configuring the system to
communicate with the drive.

About this Guide
Order Number: EK–SM1TF–UG. A01 xi
Conventions
This guide uses the following conventions:
Style Meaning
boldface type For emphasis
italic type For emphasis and manual titles
__________________________________________
Novell™ is a trademarks of Novell.
MS-DOS™ is a trademark of Micosoft Corporation
SunOS™ and Solaris™ are trademarks of Sun Microsystems, Inc.
IBM™ and AIX™ are tradaemarks of IBM Inc.

Order Number: EK–SM1TF–UG. A01 1–1
1
Introduction
This chapter provides a product overview of the TZ88 Model 20/40 GB DLT Cartridge Tape Drive and identifies
design features (including basic components and performance considerations). The chapter also includes
overview descriptions of the data and cleaning tape cartridges, defining the basic functions of each, and identi-
fies what is supplied with the tape drive.
1.1 Product Overview
The StorageWorks TZ88 Model 20/40 GB DLT Cartridge Tape Drive is a streaming tape
drive which connects to a SCSI bus. Assuming a 2:1 compression ratio on a CompacTape IV
cartridge, this device can store up to 40 GB of data with compression, or up to 20.0 GB of
data without compression. The primary uses for this drive are data backup, data archiving,
and loading software onto computer systems. The TZ88 Model 20/40 GB DLT Cartridge
Tape Drive comes either embedded in a system enclosure, in which case it is identified as an
SWXTL-CA StorageWorks Building Block (SBB), or else in an enclosure with a self-
contained power supply, in which case it is identified as an SWXTL-CT Tabletop Tape
Drive. This initial section of this document discusses the generic information that is common
to either version; subsequent sections will provide details that are specific to either product.
1.2 Design Features
Figure 1–1 shows a view of the front panel, which provides status indicators for system op-
eration, along with an access door for inserting and removing the CompacTape IV tape car-
tridge.
1.2.1 Basic Components
The TZ88 Model 20/40 GB DLT Cartridge Tape Drive has an integrated SCSI controller
module that connects to the host computer system’s SCSI adapter. The controller module is
responsible for processing SCSI commands and for initiating tape drive operations. In the
case of the SBB the connection to the SCSI bus is made through the StorageWorks Expan-
sion Storage Pedestal, as discussed in Chapter 2. For the Tabletop device, the connection to
the SCSI bus must be made through an appropriate cable, depending on the type of host
adapter that is used and/or the desired physical length of cable (See Chapter 3).
1.2.2 Performance Considerations
The performance you can achieve with the TZ88 Model 20/40 GB DLT Cartridge Tape
Drive can depend on a number of considerations, including your system processor. When set
to compressed mode, this tape drive theoretically can back up 10.8 GB of data per hour (tape
streaming at maximum speed and recording highly compressible data). In a host-based

TZ88 Model 20/40 GB DLT Cartridge Tape Drive
1–2 Order Number: EK–SM1TF–UG. A01
configuration, proper choice of system processor, cache, hard drive, adapters, and backup
software can help to approach this throughput rate. Host SCSI IO or other computer-
intensive operations on the host CPU reduces throughput to tape.
Figure 1–1 Front Panel of TZ88 Model 20/40 GB DLT Cartridge Tape Drive
When data is being passed from or to client workstations in a client-server environment,
additional parameters having to do with reduced local area network bandwidth, network traf-
fic, or lower client workstation performance characteristics will also tend to reduce maximum
throughput to the tape drive.
1.3 Data Tapes
1.3.1 CompacTape IV Description
The CompacTape IV cartridge is a 4-1/8-inch square, black, plastic cartridge, containing
1800 (1778 usable) feet of 1/2-inch magnetic, metal particle (MP) tape. A write-protect slide
switch on the front surface lets you select between two positions: write enabled (switch
moved to the right), which lets the tape drive write data on the tape, and write protected
(switch moved to the left), which prevents the tape drive from writing over data you want to
preserve (See Figure 1–2).

Chapter 1. Introduction
Order Number: EK–SM1TF–UG. A01 1–3
NOTE
CompacTape III and IIIXT tape cartridges can also be used with
the TZ88 Model 20/40 GB Cartridge Tape Drive. The Compac-
Tape III cartridge contains 1167 (usable) feet of 1/2-inch magnetic
tape and has a storage capacity of 10 GB uncompressed and 20
GB compressed. The CompacTape IIIXT cartridge has a white
plastic case, contains 1778 (usable) feet of 1/2-inch magnetic tape
and has a storage capacity of 15 GB uncompressed and 30 GB
compressed.
Figure 1–2 CompacTape IV Data Cartridge
1.3.2 Cartridge Packaging
Your CompacTape IV cartridge comes supplied with:
1. A set of slide-in labels
2. A cartridge-handling information sheet
1.4 Reading and Writing Data
The TZ88 Model 20/40 GB DLT Cartridge Tape Drive writes 64 pairs of tracks — 128
tracks total — on the CompacTape IV tape. The drive reads and writes data in a two-track
parallel, serpentine fashion, traveling the entire length of tape on two tracks. The drive then
steps the head, reverses tape direction, and continues to read/write on the next two tracks, re-
peating this same process for a total of 64 times per tape.
1.4.1 Write-Protecting Data
The CompacTape IV cartridge has a write-protect slide-bar switch on its front surface that
prevents accidental erasure of data. When you move the switch to the left, so that a small or-
ange rectangle is visible in the aperture over the left arrow symbol on the switch (see
Figure 1–2), the tape is write-protected and data cannot be written to the tape. When you

TZ88 Model 20/40 GB DLT Cartridge Tape Drive
1–4 Order Number: EK–SM1TF–UG. A01
move the switch to the right, so that no orange color shows in the rectangular aperture, the
tape is write-enabled, and the tape drive can write to the tape. The symbols on the slide-bar
switch indicate this function by depicting data flow as a downward-pointing arrow and the
tape medium as a horizontal line below the arrow’s point. The arrow on the left side of the
slide-bar switch depicts a barrier line between the data-flow arrow and the tape; this symbol-
izes that the data cannot reach the tape when the switch is moved to the left. No such barrier
line appears below the arrow on the right side of the switch, indicating that data can flow to
the tape when the switch is moved to the right.
1.5 Head Cleaning Tape
Head cleaning tape is used to maintain the cleanliness of the read/write heads in the tape
drive. Accumulation of dirt on the heads can cause read and/or write errors. The head
cleaning tape should be used periodically, the length of the period depending on use of the
drive.
1.5.1 CleaningTape III Description
The CleaningTape III cartridge is a 4-1/8-inch square, light yellow, plastic cartridge contain-
ing 1200 feet of 1/2-inch cleaning tape (see Figure 1–3). For information on using the
CleaningTape III cartridge, refer to Table 4–8.
Figure 1–3 Cleaning Tape
1.5.2 CleaningTape III Packaging
The CleaningTape III cartridge comes supplied with:
1. A slide-in label containing 20 boxes, one box to be checked off following each sequen-
tial use of the CleaningTape III cartridge (refer to Section 1.5.3).
2. A cartridge-handling information sheet.

Chapter 1. Introduction
Order Number: EK–SM1TF–UG. A01 1–5
1.5.3 CleaningTape III Cartridge Expiration
Each use of the CleaningTape III cartridge uses up some of the cleaning area on the tape.
You can use the CleaningTape III cartridge approximately 20 times before the cleaning area
is used up. After that many uses, the cartridge will be ineffective and should be replaced with
a new cartridge.
To keep track of the number of times the tape has been used, place a check mark in one of
the 20 boxes on the cartridge label after each cleaning.
1.6 Supplies
1.6.1 Cartridges Provided
One CompacTape IV cartridge and one CleaningTape III cartridge come with each TZ88
Model 20/40 GB DLT Cartridge Tape Drive, in the shipping package.
1.6.2 How To Order Replacement Cartridges
You can order additional cartridges by contacting your Digital reseller or by calling Digital’s
DECdirect ordering service at 1-800-DIGITAL in the U.S.A.; in Canada, call 800-267-6215.
Table 1–1 lists ordering numbers for various quantities of cartridges for the TZ88 Model
20/40 GB DLT Cartridge Tape Drives:
Table 1–1 Ordering Numbers for Data Tapes and Cleaning Tape
CompacTape IV Tapes
Order Number Description
TK88K-01 CompacTape IV Data Cartridge (quantity, 1)
TK88K-07 CompacTape IV Data Cartridge (quantity, 7)
TK88K-A1 CompacTape IV Data Cartridge (quantity, 945)
CompacTape III Tapes
Order Number Description
TK85-HC CleaningTape III Head Cleaning Cartridge
TK85K-01 CompacTape III Data Cartridge (quantity, 1)
TK85X-01 CompacTape IIIXT Data Cartridge (quantity, 1)
TK85K-07 CompacTape III Data Cartridge (quantity, 7)
TK85K-A1 CompacTape III Data Cartridge (quantity, 945)

Order Number: EK–SM1TF–UG. A01 2–1
2
Installation and Operation of the
SWXTL-CA Tape Drive
in a Storage Subsystem
This chapter provides specific details pertaining to unpacking, preinstallation setup, installation, and POST op-
erational testing of the SWXTL-CA StorageWorks Building Block (SBB) Tape Drive, which is designed to be
operated in a Digital StorageWorks Expansion Storage Pedestal.
2.1 Introduction
The SWXTL-CA Tape Drive is housed in an SBB storage carrier and is designed for instal-
lation into a StorageWorks Storage Expansion Pedestal subsystem. The drive occupies three
adjacent slots in the storage enclosure and is configured as one of up to seven devices on the
SCSI bus. This chapter describes how to unpack the drive, how to prepare the drive for in-
stallation, how to set the SCSI ID of the tape drive, how to install the device into a Storage-
Works Expansion Storage Pedestal subsystem, and how to perform the Power-On Self-Test
(POST) procedure.
2.2 Unpacking
Unpack and inspect the contents of your shipment. It should contain the following items:
•This guide
•One TZ88 Model 20/40 GB DLT Cartridge Tape Drive
•One blank CompacTape IV data cassette tape cartridge
•One CleaningTape III head-cleaning cartridge
•One StorageWorks TZ88 Model 20/40 GB DLT Cartridge Tape Drive Operator’s
Reference Card
Also, check the contents for damaged components. Notify your vendor immediately if any
items are damaged. Keep all boxes and packing material for reshipment.
2.3 Preinstallation Procedures
Perform the following procedure before installing the TZ88 Model 20/40 GB DLT Cartridge
Tape Drive.

TZ88 Model 20/40 GB DLT Cartridge Tape Drive
2–2 Order Number: EK–SM1TF–UG. A01
2.3.1 Setting the SCSI ID Address of the Tape Drive
The storage enclosure slots are numbered 0 through 7, from top to bottom, with the power
supply occupying slot 7. The SCSI address switches on the rear of the SBB (refer to
Figure 2–1) are preset at the factory to automatic — SW-1, SW-2, and SW-3 set off (to left);
SW-4, SW-5, and SW-6 set on (to right). This setting means that the SBB tape drive will
have the address of whichever physical slot is connected. Because of the low position of the
unit’s backplane interface connector, this physical connection will be to the lower of the
three slots occupied by that unit. Physically, this means it will be one of slots 2 through 6, as
applicable. If you want a different specific logical address for any reason (i.e., if you wish to
use SCSI ID 0 or 6, or any specific value in between, regardless of physical location of the
unit), you can set the tape drive to any desired logical address by manually changing the set-
tings of switches SW-1, SW-2, and SW-3 on the SCSI switch pack, as delineated in Table
2–1, before inserting the SBB into the pedestal.
Figure 2–1 SWXTL-CA Tape Drive SCSI ID Switches