StorageWorks SWXTL-BA, SWHTL-BA, SWXTL-BT User Manual

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DLT 10/20 GB Cartridge Tape Drive

– StorageWorks Building Block (SWXTL-BA & SWHTL-BA) – Tabletop Tape Drive (SWXTL-BT)

User’s Guide

EK–SM1TB–UG. E01

Digital Equipment Corporation Maynard, Massachusetts

Fourth Edition, November 1995

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.

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 accordance 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.

The following are trademarks of Digital Equipment Corporation: DEC

Digital StorageWorks VMS

and the Digital Logo:

All other trademarks and registered trademarks used in this publication are the property of their respective owners.

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 III Description..............................................................................................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 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-BA SBB

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-BA 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 Enabling/Disabling Parity..................................................................................................3–2

3.3.2 Setting the SCSI ID Address of the Tape Drive..................................................................3–2

3.4 Installation of SWXTL-BT Tabletop DLT Tape Drive...........................................................3–4

3.4.1 SWXTL-BT Power On Self Test (POST)...........................................................................3–4

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StorageWorks DLT 10/20-GB Cartridge Tape Drive

4 Front-Panel Controls & Indicators and Operation

of the 10/20-GB DLT Cartridge Tape Drive

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 D

4.3 Power-On Self-Test (POST) ..................................................................................................4–4

4.4 Status Indication of Tape Drive LEDs....................................................................................4–6

4.5 CompacType III DLT Tape Cassette......................................................................................4–7

4.6 Using and Handling CompacTape III Tape Cassettes.............................................................4–7

4.6.1 Write-Protect Switch..........................................................................................................4–8

4.6.2 Data Protection..................................................................................................................4–8

4.6.3 Loading A Cartridge..........................................................................................................4–9

4.6.4 Tape in Use...................................................................................................................... 4–11

4.6.5 Unloading A Cartridge.....................................................................................................4–11

4.6.6 Using the Tape Cleaning Cartridge..................................................................................4–12

4.6.7 Preserving Cartridges.......................................................................................................4–12

4.7 Selecting Density.................................................................................................................4–13

4.7.1 How To Select Density At The Front Panel...................................................................... 4–14

4.7.1.1 Selection of Compression Mode...................................................................................4–14

4.7.1.2 Density Select Example................................................................................................ 4–15

4.7.2 Density Selection Rules...................................................................................................4–15

ENSITY SELECT Switch................................................................................................ .....4–3

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–2

C.2.1.3 Installation of Tape Drive.............................................................................................. C–2

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C.2.1.4 Rebooting of System ..................................................................................................... C–3

C.2.1.5 Testing the SWXTL SBB .............................................................................................. C–3

C.2.1.6 Verification ................................................................................................................... C–3

C.2.2 Dump Parameters for the Tape Drive................................................................................ C–4

C.3 Modifications Required for Solaris™ 2.3 (or later)...............................................................C–4

C.3.1 Installation Procedure .......................................................................................................C–4

C.3.1.1 System Modification ..................................................................................................... C–4

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–6

C.3.1.5 Test ............................................................................................................................... C–7

C.3.1.6 Verification ................................................................................................................... C–7

C.3.2 Running SUN Diagnostics (Optional) ............................................................................... C–7

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

Contents

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–3

E.3.2 HP-UX 10.00..................................................................................................................E–4

E.4 Series 800 System Device Files..........................................................................................E–4

E.4.1 HP-UX 9.05....................................................................................................................E–5

E.4.2 HP-UX 10.00..................................................................................................................E–5

E.5 Testing the Tape Drive.......................................................................................................E–5

E.5.1 Verification....................................................................................................................E–6

E.6 Dump Parameters for the Tape Drive.................................................................................E–6

Figures

1–1 Front Panel of 10/20-GB DLT Cartridge Tape Drive .....................................................................1–2

1–2 CompacTape III Cartridge............................................................................................................1–3

1–3 CompacTape III Cleaning Tape.....................................................................................................1–4

2–1 SWXTL-BA Tape Drive SCSI ID Switches...................................................................................2–2

2–2 Installing the SWXTL-BA into an Expansion Storage Pedestal......................................................2–4

2–3 Tape Drive Front Panel Controls and Indicators.............................................................................2–5

3–1 SWXTL-BT Tape Drive SCSI ID Switch Settings.........................................................................3–3

3–2 SWXTL-BT 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 III Data Tape Cartridge............................................................................................4–9

4–3 Loading Cartridge Into Tape Drive.............................................................................................. 4–10

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StorageWorks DLT 10/20-GB Cartridge Tape Drive

Figures (continued)

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

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)................................................4–11

4–8 When To Use the Cleaning Cartridge...........................................................................................4–13

4–9 Density Selections Available On 10/20-GB DLT Cartridge Tape Drive.......................................4–14

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

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Revision Record

This Revision Record provides a concise publication history of this guide. I t lists the manual revision levels, r elease 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–SM1TB–UG. A01 April 1994 Original release

EK–SM1TB–UG. B01 June 1994 Revised artwork and associated text in Chapter 2 to

agree with changed location of SCSI ID switch pack and SCSI bus connector. Revised artwork and associated text in Chapter 3 to agree with changed SCSI ID switch. Revised Chapter 4 to clarify selection of compression mode.

EK–SM1TB–UG. C01 September 1994 Added Appendix C, Product Notes for Sun™, to

provide application notes pertaining to use with SunOS™ and Solaris™ systems.

EK–SM1TB–UG. D01 January 1995 Added Appendix D, Product Notes for IBM™

RS/6000 to provide application notes pertaining to use with AIX™ 3.2.5 (or later) operating systems.

Added Appendix E, Product Notes for Hewlett Packard 9000 series 700/800 systems to provide application notes pertaining to use with HP-UX operating systems.

EK-SM1TB-UG November 1995 Revised Appendix E, Product Notes for Hewlett

Packard™ (naming convention for the HP-UX 10.00 series). Revised Appendix D, Product Notes for IBM™ RS/6000 (RS/6000 Density Code Tabel corrections). Revised Appendix C, Product Notes for Sun™.

Sun™, SunOS™ and Solaris™ are trademarks or registered trademarks of Sun Microsystems, Inc.

™ and AIX™ are trademarks or registered trademarks of IBM, Inc.

IBM

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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-BA SBB and/or SWXTL-BT Tabletop DLT Cartridge Tape

Subsystems, both of which contain a Model 10/20-GB DLT Cartridge Tape Drive.

Intended Audience

This guide is intended for people who will install, operate, and maintain the StorageWorks

SWXTL-BA SBB and/or SWXTL-BT Tabletop DLT Cartridge Tape Subsystems.

Document Structure

This guide contains the following chapters:

Chapter 1. Introduction

Chapter 1 gives an overview of the 10/20-GB DLT Cartridge Tape Drive, describes its com-

ponents, and discusses the drive features. This chapter provides a product overview of the

10/20-GB DLT Cartridge Tape Drive and identifies design features (including basic compo-

nents and performance considerations). The chapter also includes overview descriptions of

the data tape and cleaning tape cartridges used with this equipment, defining the basic func-

tions of each, and identifies what is supplied with the tape drive unit.

Chapter 2. Installation and Operation of the SWXTL-BA SBB Tape Drive in a

Storage Subsystem

Chapter 2 provides specific details pertaining to the SWXTL-BA SBB Tape Drive, which is

designed to be operated in a Digital StorageWorks Expansion Storage Pedestal subsystem.

This chapter describes how to unpack the received drive, how to prepare the drive for instal-

lation in the pedestal, how to set the SCSI ID of the tape drive, how to install the device into

a StorageWorks Expansion Storage Pedestal subsystem, and how to confirm operation in-

tegrity 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-BT 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.

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StorageWorks DLT 10/20-GB Cartridge Tape Drive

Chapter 4. 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 10/20-GB tape drive, describes how to use them (including operation of the power-on

self-test (POST), provides use rules for the CompacTape III 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 10/20-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 10/20-

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 SWXTL

10/20-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 SWXTL 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 SWXTL

10/20-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

SWXTL10/20-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 SWXTL tape drive hardware and configuring the

system to communicate with the drive.

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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–SM1TB–UG. E01 xi

Introduction

This chapter provides a product overview of the Model 10/20-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, defining the basic functions of each, and identifies what is supplied with the tape drive.

1.1 Product Overview

The StorageWorks Model 10/20-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 III car-

tridge, this device can store up to 20 GB of data with compression, or up to 10.0 GB of data

without compression. The primary uses for this drive are data backup, data archiving, and

loading software onto computer systems. The 10/20-GB DLT Cartridge Tape Drive comes

either embedded in a system enclosure, in which case it is identified as an SWXTL-BA Stor-

ageWorks Building Block (SBB), or else in an enclosure with a self-contained power supply,

in which case it is identified as an SWXTL-BT Tabletop DLT 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 III tape car-

tridge.

1.2.1 Basic Components

The 10/20-GB DLT Cartridge Tape Drive has an integrated SCSI controller module, which

connects to the associated computer system through a SCSI bus attached to that controller

module. The controller module is responsible for processing SCSI commands and for initiat-

ing tape drive operations. In the case of the SWXTL-BA SBB, the connection to the SCSI

bus is made through the StorageWorks Expansion Storage Pedestal, as discussed in Chapter

2. For the SWXTL-BT Tabletop device, however, the connection to the SCSI bus must be

made through an appropriate cable, depending on the type of controller that is used and/or

the desired physical length of cable, as explained in Chapter 3.

1.2.2 Performance Considerations

The performance you can achieve with the 10/20-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 9 GB of data per hour (tape streaming at

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StorageWorks DLT 10/20-GB Cartridge Tape Drive

maximum speed and recording highly compressible data). In a host-based 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 will tend to reduce throughput to tape, however.

Figure 1–1 Front Panel of 10/20-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 traffic, or lower client workstation performance characteristics will also tend to reduce maximum throughput to the tape drive.

1.3 Data Tape

1.3.1 CompacTape III Description

The CompacTape III cartridge is a 4-1/8-inch square, dark gray, plastic cartridge, containing 1200 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: right), which lets the tape drive write data on the tape, and to the left), which prevents the tape drive from writing over data you want t o preserve (See Figure 1–2).

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WRITE-ENABLED (switch moved to the

WRITE-PROTECTED (switch moved

Figure 1–2 CompacTape III Cartridge

1.3.2 Cartridge Packaging

Chapter1. Introduction

Your CompacTape III cartridge comes supplied with:

1. A set of slide-in labels

2. A cartridge-handling information sheet

1.4 Reading and Writing Data

The 10/20-GB DLT Cartridge Tape Drive writes 64 pairs of tracks — 128 tracks total — on

the CompacTape III tape. The drive reads and writes data in a two-track parallel, serpentine

fashion, traveling the entire length of tape on two tracks (at about 110 inches per second).

The drive then steps the head, reverses tape direction, and continues to read/write on the next

two tracks, repeating this same process for a total of 64 times per tape.

1.4.1 Write-Protecting Data

The CompacTape III cartridge has a write-protect slide-bar switch on its front surface that

lets you prevent accidental erasure of data. When you move that switch to the left, so that a

small orange 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

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.

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StorageWorks DLT 10/20-GB Cartridge Tape Drive

1.5 Cleaning Tape

1.5.1 CleaningTape III Description

The CleaningTape III cartridge is a 4-1/8-inch square, light yellow, plastic cartridge containing 1200 feet of 1/2-inch cleaning tape (see Figure 1–3). For information on using the CleaningTape III cartridge, refer to Section 4.6.5 and/or Table 4–8.

Figure 1–3 CompacTape III Cleaning Tape

1.5.2 CleaningTape III Packaging

Your CleaningTape III cartridge comes supplied with:

1. A slide-in label containing 20 boxes, to be checked off following each sequential use of the CleaningTape III cartridge (refer to Section 1.5.3).

2. A cartridge-handling information sheet.

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, mark a checkmark in one of the 20 boxes on the cartridge label after each cleaning. After all 20 boxes have been checked off, the cartridge should be considered as expired, and you should discard that cartridge and replace it with a new one.

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1.6 Supplies

1.6.1 Cartridges Provided

One CompacTape III cartridge and one CleaningTape III cartridge come with each 10/20-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-

Table 1–1 lists ordering numbers for various quantities of cartridges for the 10/20-GB DLT Cartridge Tape Drives:

Table 1–1 Ordering Numbers for Cleaning Tape and Data Tapes

Chapter1. Introduction

DIGITAL in the U.S.A.; in Canada, call 800-267-6215.

Order Number Description

TK85-HC CleaningTape III Head Cleaning Cartridge TK85K-01 CompacTape III Data Cartridge (quantity, 1) TK85K-07 CompacTape III Data Cartridge (quantity, 7) TK85K-A1 CompacTape III Data Cartridge (quantity, 945)

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Installation and Operation of the

SWXTL-BA SBB Tape Drive

This chapter provides specific details pertaining to unpacking, preinstallation setup, installation, and POST operational testing of the SWXTL-BA StorageWorks Building Block (SBB) Tape Drive, which is designed to be operated in a Digital StorageWorks Expansion Storage Pedestal.

2.1 Introduction

The SWXTL-BA SBB Tape Drive is housed in an SBB storage carrier and is designed for installation into a StorageWorks Storage Expansion Pedestal subsystem. The drive occupies three adjacent slots in the storage subsystem and is configured as one of up to seven devices on the SCSI bus. This chapter describes how to unpack the received drive, how to prepare the drive for installation, how to set the SCSI ID of the tape drive, how to install the device into a StorageWorks Expansion Storage Pedestal subsystem, and how to perform the Power On Self Test (POST) procedure.

The information in this chapter is divided as follows:

• Unpacking

• Preinstallation setup of the drive (setting SCSI ID Address of the tape drive)

• Installation into the storage subsystem

• POST procedure

2.2 Unpacking

Unpack and inspect the contents of your shipment. It should contain the following items:

• This guide

• One Model 10/20-GB DLT Cartridge Tape Drive

• One blank CompacTape III data cassette tape cartridge

• One CleaningTape III head-cleaning cartridge

• One StorageWorks 10/20-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.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

2.3 Preinstallation Procedures

Perform the following procedure before installing the 10/20-GB DLT Cartridge Tape Drive.

2.3.1 Setting the SCSI ID Address of the Tape Drive

The pedestal 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 SWXTL-BA SBB Tape Drive (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 settings 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-BA Tape Drive SCSI ID Switches

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Chapter 2. Installation and Operation of the SWXTL-BA SBB Tape Drive

SW-6

Off

Table 2–1 SWXTL-BA Tape Drive SCSI ID Switch Settings

Address SW-1 SW-2 SW-3 SW-4 SW-5

0 Off Off Off Off Off 1 On Off Off Off Off 2 Off On Off Off Off 3 On On Off Off Off 4 Off Off On Off Off 5 On Off On Off Off 6 Off On On Off Off

7* On On On Off Off Automatic †

* Normally reserved for host. † Sets device address to storage subsystem slot number.

________________________________________________________________________________________________________________________

Off Off Off On On

2.4 Installing the SWXTL-BA SBB Tape Drive Into a StorageWorks Expansion Storage Subsystem

CAUTION

Refer to the applicable documentation for your host computer and/or your specific operating system before installing the drive. This installation procedure assumes that you have already installed and appropriately cabled the StorageWorks Storage Expansion Pedestal and have checked out that subsystem as applicable, so that it is ready to receive this SBB unit.

You install the SWXTL-BA SBB tape drive in a storage subsystem by inserting the drive so that the connector on the lower portion of the rear surface fits into any available SCSI device storage slot. This means any of slots 2 through 6; the three-slot span of this SBB device means that you cannot use slot 0 or 1, which are covered if you select slot 2, and slot 7 is reserved for the pedestal power supply.

The drive can be installed using the hot-swap method where the drive is installed with the host system powered on and operating, or with the host system powered off. Before using the hot-swap method, consult your system administrator to ensure that your operating system supports this type of installation.

To install the tape drive:

1. Open the door on the front bezel of the StorageWorks Expansion Storage Pedestal sub-

system (refer to Figure 2–2) and remove the bezel by pressing down on the plastic locking tabs at the bottom inside surface of the bezel (just in front of the power supply) and then pulling the bottom of the bezel forward, after which you can simply lift the entire bezel assembly free.

2. Remove the filler panel (or any previously mounted SBB) from the desired three adjacent

device slots in the storage subsystem by squeezing the locking handles at the ends of each respective panel (or SBB) and removing the panel (or SBB).

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

3. Install the tape drive in the open slot, sliding the drive in firmly until its locking handles

snap into place.

4. Perform the POST test, as described in the following subsection, to verify the operational

integrity of the drive.

Figure 2–2 Installing the SWXTL-BA into an Expansion Storage Pedestal

2.5 Power-On Self-Test (POST)

The power-on self-test (POST) exercise verifies the proper installation of the tape drive. The test may be performed with the host computer powered on, if your operating system permits, or with the SCSI bus either connected or disconnected. Refer to Figure 2–3 for the locations of the front panel LED indicators on the drive. To execute the power-on self-test, proceed as follows:

The description of the indicator sequence described in the following procedure describes what happens when the 10/20-GB tape drive is connected to an active SCSI bus. If the SCSI bus is not connected, all left-side panel indicators remain on at all times that power is applied to the unit.

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NOTE 1

Chapter 2. Installation and Operation of the SWXTL-BA SBB Tape Drive

NOTE 2

If the WRITE-PROTECTED indicator flashes orange and the TAPE IN USE indicator flashes yellow continuously for more than 30 seconds in the following test, the POST test has failed. Repeat the test to clear the failure (power off and then on). If the test still fails, replace the drive.

Figure 2–3 Tape Drive Front Panel Controls and Indicators

1. Ensure that there is no cassette tape in the drive.

2. Power on the 10/20-GB DLT Cartridge Tape Drive device, either by cycling the pedestal

subsystem power switch off and on or, if other SBB units in that subsystem are active and should not be powered down, by hot-swapping the SBB unit under test (i.e., pull it free from the pedestal and then slide it back into its operating position).

3. Observe that all left-side panel indicators initially light, with all right-side indicators then

lighting sequentially, from top to bottom.

4. If the SCSI bus is not connected, all left-side panel indicators will stay lit; if the SCSI

bus is connected, all left-side panel indicators should go out within 1 second after power is applied, while all right-side panel indicators should remain lighted for 3 to 5 seconds and then go out, except for the T

APE IN USE indicator, which should continue to blink for

a few seconds while tape mechanism searches for tape and then go out, at which time an internal beeper sounds to alert the operator and the green O

PERATE HANDLE indicator

becomes steadily lit to indicate that door latch is released and that the cartridge insert/release handle can be pulled up to allow insertion of tape.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

5. Load a cassette tape into the drive and observe the TAPE IN USE indicator. The indicator

initially should blink momentarily at 1-second intervals after the handle is closed (pushed down) as the tape drive engages the tape, then double-blink at the same interval while the tape is being moved to the correct position. Depending on whether this is a new tape or a tape with some previously recorded data, this blinking period should extend for from 20 seconds to a few minutes after the cassette is loaded, until the tape has reached the applicable position for recording new data, after which the T cator should remain steadily on.

6. After the unit passes POST, connect the subsystem to your host computer through ap-

propriate SCSI interface cables, and then have your system administrator assign a device name to the drive, if applicable.

If you are connecting the SBB tape drive to a fast, single-ended SCSI bus, the interface cable cannot exceed three meters (9.8 feet). If you are connecting the tape drive to a slow, single-ended SCSI bus, the interface cable can be up to 6 meters (19.7 feet) in length. In both cases, this maximum cable length includes not only the length of cable from the pedestal subsystem to the host computer but also the length of cable internal to the subsystem (including the backplane) and the length of cable internal to the host computer.

APE IN USE indi-

NOTE

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Installation and Operation of the

SWXTL-BT Tabletop Tape Drive

This chapter provides specific details pertaining to the SWXTL-BT SBB Tape Drive, that is designed to be operated as an independent standalone unit on the desktop, a convenient shelf, or other flat surface. The chapter tells how to unpack the tabletop unit, how to perform required preinstallation adjustments, set the SCSI address, operate the power-on self-test, and connect the unit to your host system.

3.1 Introduction

CAUTION

Refer to applicable instructions for your specific operating system before installing the drive and executing the power-on self-test procedure.

The SWXTL-BT Tabletop Tape Drive is an independent unit that requires a shelf space measuring at least 9-1/4” wide by 13” deep (plus cable connection space). Connection to your host computer is accomplished through a SCSI-bus interface cable. To install the drive, you first must perform applicable preinstallation procedures to enable or disable parity, as desired, and to set the SCSI ID address to the desired device number. You can then power-up the drive and confirm that the power-on self-test (POST) procedure confirms the operational integrity of your tabletop unit. Once you know the tape drive is fully operational, you can connect an applicable SCSI interface cable from the connector at the rear of the SWXTL-BT Tape Drive to the SCSI-bus interface card in your host system and, if applicable, terminate the SCSI bus.

This chapter describes how to unpack the received SWXTL-BT tabletop drive, how to prepare the drive for installation, how to set the parity capability and SCSI ID of the tape drive, how to perform the initial Power-On Self-Test (POST) procedure, and how to connect the tape drive to your host computer. The information in this chapter is divided as follows:

• Unpacking

• Preinstallation setup of the drive

• POST procedure

• Connection of the tape drive to your host computer

Order Number: EK–SM1TB–UG. E01 3–1

3.2 Unpacking

Unpack and inspect the contents of your shipment. It should contain the following items:

• This guide

• One SWXTL-BT Tabletop DLT cassette tape drive

• One blank CompacTape III cassette tape cartridge

• One CleaningTape III head-cleaning tape cassette

• One SCSI bus terminator

• One StorageWorks 10/20-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.

Confirm that you have received, either as a separate shipment or as part of this same order, depending on your reseller, an appropriate SCSI-bus interface cable, corresponding to the type of SCSI interface controller mounted in your computer system. (Refer to Table 3–1).

Table 3–1 10/20-GB DLT Cartridge Tape Drive SCSI Interface Cables

Chapter 3. Installation and Operation of the SWXTL-BT Tabletop Tape Drive

Application Drive-end

Connector

Low-Density toLow-Density

Cable Low-Density to

High-Density

Cable

The 50-pin low-to-low-density cable is compatible with most ISA-type SCSI-bus adapters.

The 50-pin high-density cable is compatible with either of:

a. Most EISA-bus SCSI adapters. b. Daisy-chain connection to DEC BA350 (Pedestal) or DEC BA353 (Desktop) SCSI storage

expansion cabinets.

_______________________________________________________________________________________________________________________________________________

Low-Density 50-pin

3.3 Preinstallation Procedures

Perform the following procedure before installing the SWXTL-BT tape drive.

3.3.1 Setting the SCSI ID Address of the Tape Drive

The SWXTL-BT Tabletop Tape Drive contains a push-button counter switch in the upper right corner of the rear panel. The push-button counter is preset at the factory to SCSI ID 0, but you can easily set the tape drive to any desired specific address by manually changing the setting of the counter. The single-digit counter shows the current SCSI ID address selection. Each time you press the button located just above the counter readout, the counter (and the SCSI ID address) increments to the next higher value, until you reach 7, the upper limit. Each time you press the button located just below the counter readout, the counter (and the SCSI ID address) decrements to the next lower value, until you reach 0, the lower limit.

Host-end Connector

Low-Density 50-pin

High-Density 50-pin

Digital SCSI Cable Part Number

BC19J-1E (18 inches long) BC19J-06 (2.0 meters long)

BC09D-03 (3.0 feet long) BC09D-06 (6.0 feet long)

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StorageWorks DLT 10/20-GB Cartridge Tape Drive

3.4 Installation of SWXTL-BT Tabletop DLT Tape Drive

The SWXTL-BT Tabletop DLT Tape Drive is an independent unit that requires a shelf space measuring at least 9-1/4” wide by 13” deep (plus cable connection space). Connect the tape drive to an appropriate power source, using the supplied power cable, as follows:

1. Plug the female end of the power cord into the power jack at the rear face of the tape

drive unit and then plug the other end of that cord into an appropriate power source, providing 120/240 Vac at 50/60 Hz.

2. Perform the POST test described in the following subsection t o verify the operational in-

tegrity of the drive.

3.4.1 SWXTL-BT Power-On Self-Test (POST)

The POST test verifies operational integrity of the tape drive. The first time that you run this test, the SWXTL-BT tape drive unit should be disconnected from the host computer, with no tape cartridge in the drive. Once you have confirmed that the tape drive is operational, you can run the POST checkout with the host system connected, as desired. Refer to Figure 3-1 for the locations of the front panel LED indicators on the drive.

To execute the power-on self-test, proceed as follows:

NOTE 1

The description of indicator sequence described in the following procedure describes what happens when the 10/20-GB tape drive is connected to an active SCSI bus. If the SCSI bus is not connected, all left-side panel indicators remain on at all times that power is applied to the unit.

NOTE 2

If the WRITE-PROTECTED indicator flashes orange and the TAPE IN USE indicator flashes yellow continuously for more than 30 seconds in the following test, then the POST test has failed. Repeat the test to clear the failure (power off and then on). If the test still fails, replace the drive.

1. Ensure that there is no cassette tape in the drive.

2. Power on the tape drive (depress top “1” portion of 1/0 rocker switch on rear panel) and

observe that all left-side panel indicators initially light, with all right-side indicators then lighting sequentially, from top to bottom.

3. If the SCSI bus is not connected, all left-side panel indicators will stay lit; if the SCSI

APE IN USE indicator, which continues to blink for a few

APE IN

USE indicator goes out, an internal beeper sounds to alert the operator and the green

PERATE HANDLE indicator becomes steadily lit to indicate that the door latch is re-

O leased and that the cartridge insert/release handle can be pulled up to allow insertion of tape.

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Chapter 3. Installation and Operation of the SWXTL-BT Tabletop Tape Drive

Figure 3–1 SWXTL-BT Tape Drive Front Panel Controls and Indicators

4. Load a cassette tape into the drive (refer to Figure 4–3) and observe the TAPE IN USE indicator. The indicator initially should blink momentarily at 1-second intervals after the handle is closed (pushed down) as the tape drive engages the tape, then double-blink at the same interval while the tape is being moved to the correct position. Depending on whether this is a new tape or a tape with some previously recorded data, this blinking period should extend from 20 seconds to a few minutes after the cassette is loaded, until the tape has reached the applicable position for recording new data, after which the T

USE indicator should remain steadily on.

APE

5. After the unit passes POST, connect the unit to your host computer through appropriate SCSI interface cables, as follows. If applicable, have your system administrator assign a device name to the drive.

NOTE

If you are connecting the tabletop tape drive to a fast, singleended SCSI bus, the interface cable cannot exceed three meters (9.8 feet). If you are connecting the tape drive to a slow, singleended SCSI bus, the interface cable can be up to 6 meters (19.7 feet) in length. Table 3–1 provides part-number identifications for ordering appropriate cables.

a. Connect the appropriate 50-pin-connector end of the SCSI cable to either of the

two vertically oriented jacks at the upper right rear of the tape drive unit.

b. If this tape drive is the last unit on the SCSI bus, make sure that the supplied

terminator is securely fastened in place in the adjacent connector.

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StorageWorks DLT 10/20-GB Cartridge Tape Drive

c. Connect the other end of the SCSI cable to the applicable connector provided on

the SCSI controller card in your host system.

d. After the unit is connected to the SCSI bus, you may wish to repeat the power-on

self-test exercise to confirm the operational integrity of all connections.

Order Number: EK–SM1TB–UG. E01 3–5

Controls, Indicators, and Operation of the

10/20 GB DLT Cartridge Tape Drive

This chapter identifies the switches and LED indicators on the front panel of the 10/20-GB DLT Cartridge Tape Drive, describes how to use them (including operation of the power-on self-test (POST), provides use rules f or the CompacTape III 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.

4.1 General

Digital’s 10/20-GB-family of DLT Tape Drives offer outstanding performance and integrity, combined with ease of use. All normal-use operator controls are mounted on the front panel, consisting of two push-button switches, a pull-down handle, and several color-differentiated LED indicators to indicate operational status at any given time. The drive uses these indicators to “report” when the unit is ready for a tape, data format of the tape currently mounted, when the heads need to be cleaned, and when it is safe to take a tape out of the drive, as well as whether or not the tape cartridge currently is write-protected.

4.2 Front-Panel Controls and Indicators

All operating controls are located on the front panel (refer to Figure 4–1). The cartridge insert/release handle provides simplified tape loading and unloading proce-

dures, printed on the handle. This handle must be pulled down in order for a tape cartridge to be loaded or removed, as described in the following procedures, but must not be pulled down unless the green O

The right-side front panel of the tape cassette drive contains four indicators (W PROTECTED, TAPE IN USE, USE CLEANING TAPE, and OPERATE HANDLE LEDs) and one push-button switch (U

Table 4–1 identifies each of these indicators/controls and gives the operating condition and function of each one.

The left-side front panel of the tape cassette drive contains five indicators (TK85, TK86, TZ87, C SELECT push-button). Table 4–2 identifies each of these indicators/controls and gives the operating condition and function of each one.

OMPRESS, and DENSITY OVERRIDE LEDs) and one push-button switch (DENSITY

PERATE HANDLE indicator is lit.

NLOAD push-button).

RITE

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

Figure 4–1 SWXTL-BT Tape Drive Front Panel Controls and Indicators

4.2.1 UNLOAD Push-Button

CAUTION

Pressing the UNLOAD push-button during normal tape operations may halt the tape and result in the loss of data.

Activation of the UNLOAD push-button causes the tape drive to rewind the tape and then unload the tape from the tape drive mechanism back into the cartridge. The tape must be completely rewound and unloaded into the cartridge before you remove the cartridge from the drive. Depending on the tape position when you press the U

NLOAD push-button, an unload-

ing operation may take from 10 seconds up to 2 minutes. In the event that the tape drive is writing data to the tape when you press the U

NLOAD push-

button, the 10/20-GB tape drive flushes any buffered write data to the medium before beginning the unloading sequence.

If the drive is in error state (all four right-side panel indicators flashing), pushing the U

NLOAD push-button causes the tape drive to reset and unload the tape, if possible.

4.2.2 Cartridge Insert/Release Handle

Operate the cartridge insert/release handle to load a cartridge or to eject a cartridge only when the Operate Handle indicator is lit. The handle lifts to the open position and lowers to the closed position. (See Section 4.6.3 for cartridge loading procedures, Section 4.6.6 for cartridge unloading procedures.)

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Chapter 4. Controls, Indicators, and Operation of 10/20-GB DLT Cartridge Tape Drive

Table 4–1 Right-side Front Panel Indicators and Controls

Label Color State Operating Condition or Function

Write Protected Orange On Loaded tape is write-protected.

Off Loaded tape is write-enabled.

Tape in Use Yellow On Tape is loaded, ready for use.

Blinking Tape is moving.

Use Cleaning Tape Yellow On Drive heads need cleaning, or else

current data cartridge is bad.

Remaining on after you unload cleaning tape.

Turns on again when data cartridge is loaded after cleaning.

Off Cleaning is complete or un-

OPERATE HANDLE Green On Cartridge insert/release handle is

Off Cartridge insert/release handle is

UNLOAD Recessed

(pushed in)

At rest (out)

All right-side front panel indicators

On (simultaneously) Power-on self-test is starting.

Blinking An error has occurred. Press the

Cleaning tape attempted to clean the drive heads, but was expired (insufficient cleaning area), so heads were not adequately cleaned.

Data cartridge may be defective; try another cartridge.

necessary.

unlocked and can be operated.

locked. Do not operate handle. Used to unlock the tape cassette

door handle (press and hold for 1 to 2 seconds).

Normal inactive condition for this spring-loaded push-button switch.

Unload push-button or turn drive power off and then on again to clear the error.

4.2.3 DENSITY SELECT Switch

Activation (momentary, only) of the DENSITY SELECT push-button causes the tape drive first to enter the density-select mode and then, with each subsequent momentary action, to select the next-in-sequence density selection. In addition, this switch also functions as an enable/disable selection switch for the tape drive’s compression capability when the drive is operating in the TZ87 density mode, as discussed in section 4.7.1.1.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

Table 4–2 Left-side Front Panel Indicators and Controls

Label Color State Operating Condition or Function

TK85 Yellow On Indicates tape was last recorded in

Blinking Indicates tape was last recorded in

TK86 Yellow On Indicates tape was last recorded in

Blinking Indicates tape was last recorded in

TZ87 Yellow On (default) Indicates tape was last recorded in TZ87

Blinking Indicates tape was last recorded in

Off Compression mode is disabled.

Compress Yellow On Compression mode is enabled.

Density Override Yellow On A density selection has been set from

Off (default) Density selection is under host control or

Blinking Unit is in density selection mode;

Density Select Recessed

(pushed in)

At rest (out)

TK85 format.

another density but has been selected for recording in TK85 density. (You select this density for a write from BOT.)

TK86 format.

another density but has been selected for recording in TK86 density. (You select this density for a write from BOT.)

format.

another density but has been selected for recording in TZ87 density. (You select this density for a write from BOT.)

(Compression can be done in TZ87 density, only.)

the drive’s front panel.

else is automatic.

pressing Density Select push-button at this time will cause next-higher density option to be selected.

If Density Override indicator is off, activates density selection mode, causing that indicator to blink. If Density Override indicator is blinking (meaning density selection mode is already active), causes next higher density option to be selected.

Normal inactive condition for this springloaded push-button switch.

4.3 Power-On Self-Test (POST)

The POST (Power-On Self-Test) test , which is performed automatically whenever the 10/20-GB tape drive is powered on, verifies operational integrity of the tape drive. Operation of the POST exercise for the different models is delineated in Section 2.5 for the SWXTLBT SBB and Section 3.4.1 for the SWXTL-BT Tabletop, as part of the installation procedures, but is repeated here, generically, for convenience. The operation may be

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Chapter 4. Controls, Indicators, and Operation of 10/20-GB DLT Cartridge Tape Drive

performed with the host system power on (if your operating system permits) or off, and with the SCSI bus connected or disconnected. (Refer to Figure 4–1 for the locations of the front panel LED indicators on the drive.)

NOTE 1

The description of indicator sequence described in this procedure, as in the associated tables, describes what happens when the 10/20-GB unit is connected to an active SCSI bus. If the SCSI bus is not connected, all left-side panel indicators remain on at all times that power is applied to the unit.

To execute POST, proceed as follows:

NOTE 2

If the WRITE-PROTECTED indicator flashes orange and the TAPE IN USE indicator flashes yellow continuously for more than 30 seconds in the POST exercise, then the test has failed. Repeat the test to clear the failure (power off and then on). If the test still fails, replace the drive.

1. Power on the tape drive (if you are using the tabletop unit, depress top “1” portion of 1/0

rocker switch on the rear panel; if you are using an SBB mounted in a storage pedestal, turn on pedestal power or else pull the SBB tape drive out and then push it back into place).

2. Observe that all left-side panel indicators initially light, with all right-side indicators then

lighting sequentially, from top to bottom.

If the SCSI bus is not connected, all left-side panel indicators will stay lit; if the SCSI

APE IN USE indicator, which continues to blink for a few

seconds while tape mechanism searches for tape. Subsequent indicator activity depends on whether or not a tape cartridge currently is mounted in the tape drive, as defined in Table 4–3. (If no tape is present, the T

APE IN USE indicator continues to blink until the

applicable point for recording new data is under the recording head, at which time that indicator becomes steadily lit; if no cartridge is mounted, the Tape in Use indicator goes out, a transducer inside the unit beeps to alert you, and the green O

PERATE HANDLE

indicator becomes steadily lit to indicate that the door latch is released and that you can pull up the cartridge insert/release handle to allow insertion of tape.)

Following initialization, the drive is in one of the four states defined in Table 4–3.

NOTE

Under normal conditions, you should not power up a tape drive with a tape cartridge mounted, so that only conditions a and d in Table 4–3 would apply. The two intervening conditions, describing situations in which a tape was already mounted before power was applied, are included to cover emergency situations.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

Table 4–3 Operating States of 10/20-GB DLT Cartridge Tape Drive Unit

Following Initialization

Starting Condition Status Light Sequence

a. If no tape cartridge is

mounted in drive and the drive passes POST:

b. If a cartridge is present in

the drive and the cartridge insert/release handle is

down

c. If a cartridge is present in

the drive and the cartridge insert/release handle is up.

d. If the drive detects an error

condition.

(1) The yellow T

APE IN USE light turns off.

(2) The internal audio-transducer alarm beeps. (3) The green O

PERATE HANDLE light turns on.

(4) The handle is unlatched. You can now raise the handle and insert a tape car-

tridge into the drive. (1) The drive loads the tape cartridge. (2) The yellow T

APE-IN-USE light blinks while the

tape is mounting and then lights steadily.

(3) The left-side indicator corresponding with the

last-written density format of the current tape cartridge lights.

(4) The D

ENSITY OVERRIDE blinks.

(5) You can now select a density (refer to Section

4.7.1); the drive is ready for use. (1) The yellow TAPE IN USE light turns off. (2) The internal audio transducer beeps. (3) The green O

PERATE HANDLE light flashes.

When you lower the handle, the cartridge loads. All right- or left-side lights blink repeatedly.

Try to unload the tape and reinitialize the drive by pressing the Unload push-button or by turning drive power off and then on again (or, if you have an SBB, by hot-swapping that unit). If you do this, the right- or left-side lights stop blinking and the drive tries to reinitialize; if the attempt succeeds, the lights momentarily turn on steadily again and then go off.

Not recommended. Shutting down power while a tape cartridge is still mounted in the drive can result in damage either to the tape cartridge (and/or its data) or to the drive, itself.

Not recommended.

4.4 Status Indication of Tape Drive LEDs

The status of the tape drive under different conditions is indicated by the WRITE PROTECTED and TAPE IN USE LEDs. In the normal operating state, the WRITE PROTECTED LED only indicates the write-protect status and the T and load status. Table 4–4 describes the status conditions represented by the LEDs. Refer to Figure 4–1 to identify the LEDs on the front panel.

APE IN USE LED only indicates the drive activity

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Chapter 4. Controls, Indicators, and Operation of 10/20-GB DLT Cartridge Tape Drive

Table 4–4 Tape Drive LED Status

Status WRITE PROTECTED LED TAPE IN USE LED

No tape loaded. Off Off Tape loaded, write en-

abled. Tape loaded, write-pro-

tected. No SCSI/drive activity. Off SCSI/drive activity. Off Load sequence. Off

Unload sequence Off†, goes off. Flashes yellow @≈1-second interval

Reset sequence Orange

Power on self test (POST)

Test complete, no failure.

Test failure, drive fault. Flashes orange @ 2 Hz. Double-flashes yellow @≈1-second

†

If cassette is write-protected, orange WRITE-PROTECTED LED will light.

_______________________________________________________________________________________________________________________________________

Off Yellow

Orange Yellow

†

Off Flashes orange @ 2 Hz for

first few seconds, then goes off for remainder of powerup test sequence.

Resume normal operation,

†

off

Yellow (steady) Blinks on and off to track activity Blinks yellow @≈1-second interval (25%

on). Yellow continuously when done. Indicates drive activity.

(25% on). Goes off when done. Indicates drive activity.

Yellow, blinking. Normal indications.

Double-flashes yellow @≈1-second interval for length of test. Normal activity indications when test complete.

interval.

4.5 CompacType III DLT Tape Cassette

The tape cassette contains a write-protect slide-bar switch (Figure 4–2) which is the same color as the body of the tape cassette but exposes an orange area in a rectangular aperture above the arrow on the left side of that switch when in the write-protect position. To "writeprotect" the tape, slide the tab to the left before loading the tape in the drive or before starting any write operations. To "write-enable" the tape, slide the switch to the right before loading the tape in the drive or before any write operations.

4.6 Using and Handling CompacTape III Tape Cassettes

The data tape cartridge is a 4-1/8-inch, gray, plastic cartridge containing 1200 feet of 1/2inch magnetic metal particle tape. The medium is a half-inch cartridge or ANSI-compatible equivalent. It is written and read using the interchange format proposed in the applicable pending ANSI X3B5 project.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

You can order the data cartridge (Part No. TK85-01) and/or the cleaning cartridge (Part No. TK85-HC) from your reseller or by calling DECdirect at 800-DIGITAL in the U.S.A. o r 800-27-6215 in Canada. (Refer to Table 1-1 for quantity-order part numbers.)

Appropriate label cards are supplied with each tape cartridge. Always place the label in the recessed area on the cartridge. Never affix a label over another label. Also, please note that any substitute media must meet ANSI X3B5 certification requirements.

To ensure optimal performance from your cassettes tapes, observe the following guidelines when using and handling the tapes.

• Avoid placing the tape cassettes near sources of electromagnetic radiation such as

terminals, video, or X-ray equipment. Radiation from this type of equipment can erase or corrupt data on the tape

• Keep tape cassettes out of direct sunlight and away from heaters and sources of heat

NOTE

CAUTION

• Store tape cassettes and cleaning cassette at room temperatures between +5°C and

+32°C (40°F through 90°F).

• Store cassettes in a dust-free environment where the relative humidity is within the

range from 20% to 60%.

4.6.1 Write-Protect Switch

The tape cartridge has a write-protect slide-bar switch on the right side of its front surface so that you can prevent the accidental overwriting of data stored on the tape (see Figure 4–2). To read or copy from orange area is exposed in the rectangular aperture directly over the left-side arrow on the switch, indicating that the tape is in its “write-protected" state. This prevents writing to the tape and ensures that data will not be accidentally overwritten. Use the following guidelines when setting the write-protect tab:

• If you are reading data (copying from tape), set the write-protect tab to “Write Protected”

(to the left, orange area showing).

• If you are writing data (writing to tape), set the write-protect tab to “Write Enabled” (to

the right, orange area not

• When loading a tape cassette into the drive, make sure the cassette's write-protect tab is

on the right, facing you.

the tape cassette, slide the write-protect bar-switch to the left, so that an

showing).

4.6.2 Data Protection

If you move the cartridge write-protect switch to the left, the drive turns on the WRITE PROTECTED LED immediately. If the drive is writing to the tape when you move the switch, however, write-protection does not take effect until that write has been completed.

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Chapter 4. Controls, Indicators, and Operation of 10/20-GB DLT Cartridge Tape Drive

Figure 4–2 CompacTape III Data Tape Cartridge

Table 4–5 describes what happens to data protection when you move the write-protect switch before loading the cassette.

Table 4–5 Moving Write-Protect switch Before Tape Drive Operation

If you move the Write Protect switch ... Then ...

To the left, with the orange area showing through the aperture above the left arrow symbol on the switch ...

To the right, with no orange area showing in the aperture above the left arrow on the switch ...

The tape drive cannot write data to the tape.

The tape drive can write data to the tape (if the tape is not software write-protected).

Table 4–6 describes what happens to data protection when you move the write-protect switch during operation:

Table 4–6 Moving Write-Protect switch During A Read/Write Operation

If you move the Write Protect switch ... Then ... From the write-protected position (left) to the

write-enabled position (right, no orange area showing in aperture above left arrow symbol) ...

From the write-enabled position (right) to the write-protected position (left, orange area showing in aperture) ...

The tape becomes write-enabled after variable amount of time (in the order of seconds).

The tape becomes write-protected after a variable amount of time (in the order of seconds, unless write operation is in process, in which case the effect does not become active until that write operation is completed).

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

4.6.3 Loading A Cartridge

The cartridge insert/release handle on the front of the drive provides outline procedures for loading a cartridge into the tape drive (right side of handle) and unloading a cartridge from the drive (left side of handle). The following is a more detailed version of the procedure for loading a cartridge (refer to Figure 4–3).

Never operate the cartridge insert/release handle unless the green Operate Handle indicator is steadily lit.

1. When the green OPERATE HANDLE indicator is lit steadily, pull the cartridge insert/release handle open by pulling the bottom edge up and forward.

2. Insert the rear end of the cartridge (opposite from the surface containing the write-protect switch) into the aperture behind the handle, right side up (name on top, with arrows on write-protect switch on front pointing down).

3. Push the cartridge assembly into the drive until the cartridge reaches its full-stop position, with the cartridge fully pressed into the unit.

4. Push the insert/release handle closed by pushing front edge back and down.

CAUTION

After the door becomes closed, the green O

APE IN USE indicator blinks to show that the tape is loading. When the tape is at the

low T BOT (beginning of tape) marker, the yellow T

PERATE HANDLE indicator goes out and the yel-

APE IN USE indicator lights steadily. The tape

is then ready for use.

Figure 4–3 Loading Cartridge Into Tape Drive

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Chapter 4. Controls, Indicators, and Operation of 10/20-GB DLT Cartridge Tape Drive

4.6.4 Tape in Use

When the yellow TAPE IN USE light is on steadily, the tape is ready for use. While the tape is being read, written to, or rewound, the yellow T describes what is happening during cartridge use:

Table 4–7 What is Happening During Cartridge Use (Right-Side Indicators)

If ... It means ...

1. The yellow TAPE IN USE indicator is on steadily

2. The yellow TAPE IN USE indicator blinks irregularly.

3. The yellow TAPE IN USE indicator blinks regularly.

4. The audio transducer beeps and the green O turns on.

5. All four right-side indicators blink An error has occurred during operation.

PERATE HANDLE indicator

APE IN USE indicator blinks. Table 4–7

A cartridge is loaded, but the tape is not moving. This condition can mean that no application is communicating with the controller, or that the application is communicating but is not delivering commands for tape motion.

A read or write is in progress.

The tape is loading, unloading, or rewinding.

The tape is unloaded.

4.6.5 Unloading A Cartridge

NOTE

The cleaning cartridge expires after approximately 20 uses, after which time there is insufficient cleaning area remaining on the cleaning tape to adequately clean the heads.

NOTE

The following procedure presumes that the operator manually initiates the unloading sequence by pressing the Unload push-button. In some host-driven applications, the application software may issue the appropriate system software command to initiate the unloading sequence, producing the same effect.

1. Press the UNLOAD push-button on the front panel’s right side (or issue the appropriate system software command). The yellow T winds.

2. When the internal audio transducer beeps and the green Operate Handle indicator lights steadily, pull the cartridge insert/release handle open by pulling the bottom edge up and forward. (Refer to Figure 4–4).

3. Remove the cartridge by pulling it forward from the aperture.

APE IN USE indicator blinks as the tape re-

4. Push the insert/release handle closed by pushing front edge back and down.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

Figure 4–4 Unloading Cartridge From Tape Drive

4.6.6 Using the Tape Cleaning Cartridge

Table 4–8 explains when you should use the cleaning cartridge.

4.6.7 Preserving Cartridges

CAUTION

Remove a cartridge from the tape drive before turning off or powering down the host system. Failure to remove a cartridge can result in damage to the cartridge and/or to the tape drive.

To prolong the life of a cartridge, return the cartridge to its plastic case and secure the case cover when you remove the cartridge from the tape drive.

To maximize the life of recorded or unrecorded cartridges, store cartridges in a clean environment with the following conditions:

• Do not drop or bang the cartridge. Doing so can displace the tape leader, making the car-

tridge unusable and possibly damaging the drive.

• Keep tape cartridges out of direct sunlight and away from heaters and other heat sources.

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Chapter 4. Controls, Indicators, and Operation of 10/20-GB DLT Cartridge Tape Drive

Table 4–8 When To Use the Cleaning Cartridge

If ... It means ... And you should ...

1. The yellow USE CLEANING TAPE indicator lights.

2. A particular cartridge causes the

SE CLEANING TAPE

U indicator to turn on frequently.

3. The USE CLEANING TAPE indicator turns on after you clean the drive heads and reload your data cartridge.

4. The USE CLEANING TAPE indicator is on after you load the cleaning cartridge.

The drive heads need cleaning or the tape is defective (see Item 3, in this table).

The data cartridge may be defective.

Your data cartridge may be causing the problem.

Cleaning has not been done and the cleaning cartridge has expired.

Use the cleaning cartridge. Follow the instructions in Section 4.6.5 for unloading the data cartridge, then follow the instructions in Section 4.6.3 to load the CompacTape III Cleaning tape into the drive. The cleaning operation begins automatically as soon as the cartridge insert/release handle becomes closed. When cleaning is complete, the internal beeper sounds to tell you to remove the cleaning cartridge.

Back up this data on another cartridge, and then discard the old cartridge. A damaged cartridge may cause unnecessary use of the cleaning cartridge.

Try a different data cartridge.

Discard and replace the cleaning cartridge.

• Store tape cartridges in temperatures between 10oC and 40o C (50oF to 104oF). For

longer cartridge life, always store the cartridge in its plastic container and in room envi-

ronment conditions of 72

F ± 7oF (22oC ± 4oC).

• If the tape cartridge has been exposed to heat or cold extremes, stabilize the cartridge at

room temperature for the same amount of time it was exposed—up to 24 hours.

• Do not place cartridges near electromagnetic interference sources, such as terminal, mo-

tors, video, or X-ray equipment. (Data stored on the tape can be altered by the electromagnetic interference created by such sources.)

• Store tape cartridges in a dust-free environment where the relative humidity is between

20% and 80%. For longer cartridge life, store the cartridge at 40% ± 20% relative humidity.

• Place an identification label only in the slide-in slot on the front of the cartridge; do not

affix any adhesive label to the surface of the cartridge.

• Do not adhere labels to the cartridge anywhere except in the slide-in slot.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

4.7 Selecting Density

The 10/20-GB DLT Cartridge Tape Drive is designed to write and read in either 10-GB (uncompressed) or 20-GB (compressed) data format on DLT cartridge tapes. The tape drive also can both read and write in lower-density formats used in earlier DLT systems, as designated in Table 4–9. All selections, including the compression mode (which constitutes another density selection), are selectable by the Density Select push-button switch. This section describes the 10/20-GB DLT Cartridge Tape Drive’s density select features.

Table 4–9 Density Selections Available On 10/20-GB DLT Cartridge Tape Drive

Front Panel

Designation Cartridge Type/Format Storage Capacity

TK85 CompacTape III/TK85 2.6 GBF TK86 CompacTape III/TK86 6.0 GBF TZ87 CompacTape III/TZ87 10.0 GBF, uncompressed;

If you reuse a tape on which other data was previously recorded, and write from the beginning of the tape (BOT), all previously recorded data is lost, including density changes.

20.0 GBF, compressed

CAUTION

4.7.1 How To Select Density At The Front Panel

To select density with the 10/20-GB DLT Cartridge Tape Drive:

1. Insert a tape cartridge into the tape drive. The yellow T the tape loads and calibrates.

2. Wait until the yellow T

APE IN USE indicator becomes and remains steadily lit, indicating

completion of the calibration process.

3. Press and release the Density Select push-button on the front panel’s left side one time (momentary depression only; do not hold down) to enter the density-select mode. the D

ENSITY OVERRIDE indicator lights. If this is a previously recorded cartridge, the indica-

tor corresponding to the density selection used the last time this tape was written to also lights.

4. Press and release the Density Select switch again (momentary depression, only) to cause the indicator corresponding to the next-in-sequence density option to blink, and repeat this action as necessary until the indicator corresponding to the desired density option is blinking. (If this cartridge was previously recorded in a different format, the indicator corresponding to the tape’s current density selection remains steadily lit. If this is a blank tape, each indicator goes out when the next-in-sequence density is selected, except that the TZ87 indicator remains lit if you press the D compression mode, in which case both the TZ87 and C blinking.)

APE IN USE indicator blinks while

ENSITY SELECT button again to enable

OMPRESS indicators will be

5. After the host system writes new data to the tape in the selected format, the indicator corresponding to the selected density lights steadily, and the indicator identifying the last-used density option goes out.

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Chapter 4. Controls, Indicators, and Operation of 10/20-GB DLT Cartridge Tape Drive

4.7.1.1 Selection of Compression Mode

Depending on the type of data involved, the compression capability o the 10/20-GB DLT Tape Drive can store up to double the amount of data on a tape. This compression capability is another density selection. When the tape drive is operating in regular TZ87 mode (only the yellow TZ87 indicator is lit), the tape drive can store up to 10 GB on a regular CompacTape III DLT data cartridge and can transfer data (read or write) at a rate of up to 1.25 MB/s. When the tape drive is operating in compressed TZ87 mode (both the yellow TZ87 indicator and the adjacent C

OMPRESS indicator are lit), the tape drive can store up to 20 GB on the

same cartridge and can transfer data (read or write) at a rate of up to 2.5 MB/s (assuming a 2:1 compression ratio).

4.7.1.2 Density Select Example

Suppose, for example, that you have installed a tape with a prerecorded TK85 density, and you use the density-selection push-button to select the TZ87 density. You should observe the following:

• The D

ENSITY OVERRIDE indicator is lit, indicating that a density selection has been

made from the front panel.

• The TK85 indicator initially lights and remains lit, indicating the initial density selec-

tion of the current tape.

• After you toggle the density-select switch to make the TZ87 indicator blink, the drive

keeps that indicator blinking, indicating that a density change is pending, while the TK85 density indicator remains steadily lit during the writing process.

After a write from BOT occurs, you should observe the following:

• The TZ87 indicator becomes steadily lit.

• The TK85 indicator goes out.

• The D

If you now activate the density-select mode again (by momentarily pressing the D

ENSITY OVERRIDE indicator remains lit.

ENSITY

SELECT push-button) and then press that push-button one more time, the tape drive goes into its compression mode: the TZ87 indicator remains lit, but the adjacent C

OMPRESS indicator

also lights. Compression mode, which is available only for the TZ87 density, lets the tape drive read or write at twice the transfer rate and data capacity of the uncompressed mode (again, assuming a 2:1 compression ratio on the data).

4.7.2 Density Selection Rules

Density selection occurs in accordance with the following rules (See also Table 4–10):

READ or WRITE APPEND Density Selection

The indicator on the left side of the front panel of the drive will designate the density of the tape currently mounted in the drive.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

WRITE From BOT Density Selection

Full-tape density for a new tape or one that is to be reused may be selected by:

• Use of the front-panel Density Select push-button. (Using the Density Select push-but-

ton always overrides an existing selection.)

• Programmable host commands from the application software.

• If neither of these two conditions exists, however, the selected density will be the

default, native TZ87 mode (with compression enabled).

Regardless of the operating conditions, a write from BOT destroys existing data on the tape.

You can use the drive’s control panel at various times, not just after loading a tape. Density selection will be inactive until a write command is issued (at BOT). The controller remembers the lastused density selection state until you do one of the following:

• Change the density selection.

• Unload the tape.

CAUTION

NOTE

Table 4–10 Results of Density Selection

If ... Then ...

You did not press the DENSITY SELECT pushbutton.

You pressed the Density Select push-button, and the actual (last-used) density of the tape loaded in the drive is the same as the density you selected.

You pressed the DENSITY SELECT push-button, and the actual (last-used) density of the tape loaded in the drive differs from the selected density option.

The corresponding indicator on the left side of the front panel lights to show the actual density of the loaded tape while the tape is reading or writing. The applicable drive density indicator lights steadily, and the density override indicator is not lit.

Both the indicator for the actual density and the D OVERRIDE indicator light. (If the actual tape density is TZ87 format, and you have also selected the TZ87 tape density, for example, the TZ87 indicator is lit and the D indicator is lit.)

The following conditions should occur during the initial portion of the writing process: The D The indicator next to the designation of the actual (last-used) density designation lights steadily. The indicator next to the designation of the desired density option blinks.

If the actual/default density of the currently loaded tape is TZ86, for example, and you have selected the TZ87 density option, the TZ86 indicator initially lights steadily to show the current format, the TZ87 indicator initially blinks to show that you have selected that format, and the D lit until the BOT signal is processed, marking the actual beginning of writing. After that actual writing begins, the D indicator remains steadily lit during the writing process, but the TZ87 indicator goes out and the TZ86 indicator becomes steadily lit.

ENSITY

ENSITY OVERRIDE

ENSITY OVERRIDE indicator lights steadily.

ENSITY OVERRIDE indicator remains steadily

ENSITY OVERRIDE

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Maintenance

This chapter describes preventive maintenance and troubleshooting for the 10/20-GB DLT Cartridge Tape Drive. It identifies common errors, describes how to clean the heads of the tape drive, and provides a troubleshooting table to help diagnose common problems.

5.1 Introduction

This chapter describes what to do if you have problems with your tape drive or tape.

5.2 Common Errors

5.2.1 Avoiding Basic Problems

You can avoid some errors by following these basic guidelines:

• Use the correct cartridge type, as delineated in Chapter 1. (Any substitute media must

comply with ANSI X3B5 certification requirements.)

• Care for your cartridges (both data and cleaning) in accordance with the guidelines in

Chapter 4.

• Make sure the cartridge leader and the drive leader are i n their correct positions. (Refer to

Section 5.4, following.)

• Unload the cartridge before powering down the tape drive.

• Do not load a cartridge until after tape drive is initialized.

5.2.2 Error Influences

If an error occurs during tape drive operation, you may be able to correct the error yourself. Factors influencing errors include the following:

• Defective media.

• Dirty drive heads.

• Operator or user errors.

• Incorrect backup commands.

Use Table 5–1 to interpret error symptoms, determine their cause, and take corrective action.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

Table 5–1 Possible Corrections for Common Error Situations

Symptom Probable Cause Possible Correction

Failure to mount or read/write with new or used cartridge.

Application softwaregenerated initialize command fails with parity error.

Green Operate Handle indicator stays lit and tape does not move; Yellow Tape in Use indicator is lit but does not blink.

All right-side or left-side indicators are blinking.

Bad cartridge Retry same operation with a different car-

Dirty drive head(s) Use CleaningTape III head-cleaning car-

Tape calibration failed. Use CleaningTape III head cleaning car-

Cartridge loading error. Dismount the cartridge and inspect it for a

Drive failed self-test or detected a hard error during operation.

tridge.

tridge (see Section 4.6.5).

tridge, or else try a different data cartridge.

mispositioned leader (see Section 5.4.1 in this chapter). If the drive leader is not in the correct location, call your reseller or Digital services.

Inspect the drive for a damaged, misplaced, or unhooked leader (see Section 5.4.2 in this chapter). If the drive leader is not in the correct location, call your reseller or Digital services.

Try to clear the error by pressing the Unload button, or turn power off and then back on again. If the error does not clear (the tape does not rewind and unload, and the lights blink), you have a hardware failure; call your reseller or Digital services.

5.3 Cleaning the Heads

This section describes how to clean the heads of the tape drive. The heads are the components that physically read and write data to and from the cassette tape (media). We recommend that you perform the head-cleaning procedure approximately every two weeks, or after 50 hours of drive usage. Under normal conditions, it should not be necessary to exceed this cleaning schedule. If a particular cassette causes problems, try another data cassette.

Never attempt to clean the heads in a manner other than described in the following procedure. Doing so will void the product warranty.

To clean the heads, use the CleaningTape III head-cleaning cartridge, as follows:

1. Apply power t o the tape drive and wait for the internal audio transducer to beep and the

green O

2. Pull open the cartridge insert/release handle and insert the yellow CleaningTape III head-

cleaning cassette (Part No. TK85HC) into the drive for its full length, then close the handle (refer to Figure 4–3).

PERATE HANDLE indicator to light..

CAUTION

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Chapter 5. Maintenance

3. When you close the cassette insert/release handle after inserting the tape, the drive auto-

matically executes the head-cleaning operation, which takes at least 30 seconds. When the head-cleaning cassette has completed this task, the tape drive electronics (1) stop the drive, (2) unlatch the cartridge insert/release handle, and (3) turn on the green O

PERATE

HANDLE indicator so that you can remove the head-cleaning cartridge.

4. Mark the frequency-of-use label on the head-cleaning cassette, placing a check mark in

the next-available square on the card each time you use the head-cleaning cassette.

CAUTION

Remove the head-cleaning cassette as soon as possible following completion of the cleaning operation. Leaving a head-cleaning cassette in the drive might result in redundant cleaning operations each time power to the tape drive unit is turned off and on, resulting in unnecessary wear on the tape drive’s read/write heads.

Under normal conditions, the head-cleaning cassette is effective for about 20 cleanings. If the head-cleaning cassette has been overused, so that it i s expired, the Use Cleaning Tape will remain lit after you load the cleaning cassette, and no cleaning action will take place. If this happens, try another cleaning tape.

5.4 Inspections

5.4.1 Checking the Cartridge Leader

Before you use a tape cartridge, be sure its tape leader is in the correct position, as illustrated in Figure 5–1. Lift the door latch with your thumb and open the small door on the rear face of the cartridge to expose the leader.

5.4.2 Checking the Drive Leader

To examine the drive take-up leader, tilt the cartridge receiver door on the front of the drive and look inside to see that the drive leader is connected to the buckling link-hook, which should be engaged in the leader slot as illustrated in Figure 5–2 and Figure 5–3.

CAUTIONS

Do not touch exposed magnetic tape inside your tape cartridge; the normal oil on your skin can damage the tape and cause subsequent problems with respect to writing new data or reading data already stored.

If the tape leader inside the cartridge is not in the correct position, do not try to fix it. Instead, discard that cartridge and substitute a different cartridge.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

Figure 5–1 Checking Out Cartridge Leader

Figure 5–2 Correct Engagement of Take-Up Leader in Tape Drive

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Figure 5–3 Correct and Incorrect Positions of Tape Drive Leader

Chapter 5. Maintenance

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

5.5 Troubleshooting

Table 5–2 describes some common drive problems and suggests possible solutions.

Table 5–2 Troubleshooting Table

Symptom Probable Cause Possible Solution

Unable to back up or copy data to tape.

WRITE PROTECTED indicator flashes orange.

TAPE IN USE and WRITE PROTECTED LEDs flash rapidly in unison.

Cartridge writeprotected. No tape in drive.

Excessive tape errors. Perform head cleaning procedure

Dirty heads or bad media.

1. Set write-protected tab on cartridge to write-enabled.

2 Insert tape.

(Section 0) . If error repeats, try another tape.

Eject tape. Perform head cleaning procedure (Section 0) . If error repeats, try another tape.

After applying power, nothing happens. All indicators off, except green O indicator.

Drive not available to system.

PERATE HANDLE

Drive error, possibly a hard failure.

No tape loaded. Load tape.

Drive not plugged in. (If SBB unit, Storage Expansion Pedestal may not be plugged in.)

SCSI ID switches set to incorrect address.

Defective SCSI cable.

Eject tape. Power off and power on the drive. If error repeats, replace the drive.

1. Check ac power source.

2. Check SCSI ID switch settings.

3. Ensure power cable is plugged in and SCSI cable is seated properly.

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Specifications

This appendix describes the physical, electrical, and environmental specifications for the StorageWorks 10/20GB DLT Cartridge Tape Drive Family , covering both the SWXTL-BA StorageWorks Building Block (SBB) & the SWXTL-BT Tabletop DLT Cartridge Tape Drive.

Table A–1 10/20-GB DLT Cartridge Tape Drive Specifications

Characteristic Specification(s)

Performance

Read/write speed 120 in/s, streaming Transfer rate, raw 1.7 MB/s Transfer rate, user native 1.25 MB/s Transfer rate, user compressed Over 2.5 MB/s maximum Write

Over 3.0 MB/s maximum Read Repositioning time (typical) 1.3s Error rate, detected 1 in 1017 bits read Error rate, undetected 1 in 1030 bits read (calculated) Error correction code Custom Reed-Solomon ECC Drive interface SCSI-2 Passes per cassette tape Over 500,000 passes Power requirements 120/240 Vac @ 60/50 Hz

Data organization

Recording format 128-track serial serpentine fixed block Recording density 62,500 bits/in Track density 256 tracks/in Data encoding 2,7 RLL Record size Variable up to 64 KB with 4-KB blocking factor Data compression algorithm DLZ Maximum capacity (formatted) 20 GB (per cartridge)

†

Assumes a 2:1 compression ratio. (Continued on next page)

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

Table A–1 10/20-GB DLT Cartridge Tape Drive Specifications (Continued)

Characteristic Specification(s) Recording medium:

Tape 0.5 metal particle (MP) tape, 1400 to 1500 Oersted, 0.5

mil thick Length 1186 ft (usable) Cartridge CompacTape III 0.5-in tape in a 4.1x4.1x1 in cartridge Durability 500,000 tape-head passes Shelf life 10 years minimum @20°C and 40% RH (noncondensing)

Operating environment:

Temperature 10°C to 40°C Relative humidity 20% to 80% noncondensing Altitude (maximum) 8,000 ft Software support

Physical Characteristics

SWXTL-BA SBB Tape Drive

Height 14.52 cm (5.72 in) Width 23.49 cm (9.25 in) Length 33.22 cm (13.08 in) Weight 7.7 Kg (16.9 lb)

SWXTL-BT Tabletop Tape Drive

Height 13.49 cm (5.31 in) Width 23.50 cm (9.25 in) Length 33.22 cm (13.08 in) Weight 7.7 Kg (16.9 lb)

Refer to Appendix B

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Product Notes for

™

Windows NT,

This appendix provides information for the system administrator, who should read this appendix before installing and using the 10/20-GB DLT Cartridge Tape Drives (SWXTL-BA or SWXTL-BT) with a host system operating under the Windows NT, Novell, and MS-DOS operating systems,.

Novell,™ and MS-DOS

B.1 Host SCSI Interface

The 10/20-GB DLT Cartridge Tape Drive devices (SWXTL-BA and SWXTL-BT) use the standard SCSI-2 command set to interface to the PC-based host system. Therefore, the host system must be equipped with a SCSI adapter to properly interface the tape drive with the host. For example, the host SCSI adapter might interface the computer's EISA or PCI bus to the SCSI-2 port of the tape drive.

A host PC SCSI adapter is normally supplied with a compatible software driver for use with its operating system. When operating under the Windows NT, Novell, or MS-DOS operating systems, the software driver must be preloaded in accordance with the SCSI adapter manufacturer’s installation procedure in order to ensure a proper interface between the 10/20GB DLT Cartridge Tape Drive and the host. In addition, a user-level tape read/write software program may be required to implement tape support under the Windows NT, Novell, and MS-DOS environments. There are many commercial software products available that provide host or network-based functionality (data backup and restore, archiving, data logging, etc.) for these operating systems.

™

Before purchasing a user-level software product, ensure that the 10/20-GB DLT Cartridge Tape Drive is supported by that product (see note below). Commercial software vendors usually publish a supported hardware list, or have telephone technical support personnel that will answer questions regarding compatibility of a particular tape drive or other storage devices. When choosing a software product suitable for your application, follow the software vendor's installation procedure to implement support for your tape drive.

The 10/20-GB DLT Cartridge Tape Drive is functionally equivalent to the TZ87N (DEC part no.) tape drive. Commercial software products that support the TZ87N will also support both the SWXTL-BA SBB and the SWXTL-BT Tabletop devices.

_______________

Novell™ is a trademark of Novell, Inc. Windows NT™ and MS-DOS™ are trademarks of Microsoft Corporation

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NOTE

StorageWorks DLT 10/20-GB Cartridge Tape Drive

Finally, if your host is operating under Novell Netware, Novell, Inc. provides a software product called "Server Backup" with some of its operating system products. This program has been found to work well with the SWXTL-BT Tape Drive (used in the tape loaders) and in the SBB. The SWXTL-BL mini-library autoloader is not supported by this software product, however.

B–2 Order Number: EK–SM1TB–UG. E01

Product Notes for Sun™

This appendix describes how to include the SWXTL cartridge tape drive SBB in a Sun SPARC system running Solaris™ 2.3 (or later) and SunOS™ 4.1.x. The information covers the installation of the SWXTL tape drive hardware and configuring the system to communicate with the drive.

C.1 General Information

Densities can only be changed at the beginning of the tape. Front panel operation will override software control of density and compression settings. To use software-controlled density selections, the drive must first be placed in

“automatic” mode. To accomplish this, press the D number of times until only the D

Compression can be enabled or disabled at any time, with the change taking effect immediately when writing TZ87 density.

ENSITY OVERRIDE light is on.

ENSITY SELECT button the required

C.2 Modifications Required for SunOS 4.1.x

C.2.1 Installation Procedure

NOTES

1. The SWXTL designation in the following procedure is the StorageWorks product name for "DEC TZ87".

2. In order to support the addition of this device, the applicable drive information must be supplied in the /sys/scsi/targets/st_conf.c file. For additional information, read the man pages for "st".

C.2.1.1 System Modification

Perform the following steps to modify the system for communication with the SWXTL

tape drive:

1. From the command line, type:

cd /sys/scsi/targets

_______________

Sun™, SunOS™ and Solaris™ are trademarks or registered trademarks of Sun Microsystems, Inc.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

2. Edit the "st_conf.c" file and carefully add the following structure before the entry for

"/* Exabyte 8mm 5GB cartridge */":

/* TZ87 10GB DLT Streaming /w Compression Cartridge tape drive */ {

"DEC TZ87 10GB Cart. DLT Steaming /w Compression", 12 , "DEC TZ87",ST_TYPE_DEFAULT, 8192, (ST_BSF | ST_VARIABLE | ST_LONG_ERASE | ST_KNOWS_EOD), 5000, 5000, { 0x17, 0x18, 0x80, 0x81 }, { 0, 0, 0, 0 }

3. Verify that the above entry is added to the st_conf.c file correctly. Where,

• The first parameter

Compression)

• The second parameter (

(DEC TZ87 10GB Cart. DLT Streaming /w

is the name given to the drive.

12) is the length of the vendor ID provided by the

"inquiry" command.

• The third parameter (

are included between “

• The fourth parameter (

• The fifth parameter (

• The sixth parameter (

| ST_KNOWS_EOD

• The seventh parameter (

• The eighth parameter (

• The ninth parameter (

DEC TZ87) is the vendor ID. (Ensure that five spaces

DEC” and “TZ87” elements.)

ST_TYPE_DEFAULT) is the drive type for the driver.

8192) is the block size in bytes.

ST_BSF | ST_VARIABLE | ST_BSR | ST_LONG_ERASE

) comprises the drive options.

5000) is the maximum number of read retries.

5000) is the maximum number of write retries.

0x17, 0x18, 0x80, 0x81) comprises the density codes

(low é hi) as defined below:

• 0x17 is the vendor-unique density code for the TK85 (2.6 GB).

• 0x18 is the vendor-unique density code for TK86 (6.0 GB).

• 0x80 is the vendor-unique density code for the TK87 native in the uncompressed

mode (10 GB).

• 0x81 is the vendor unique code for the TK87 in the compressed mode (20 GB).

• The tenth parameter (0,0 . . .) is the speed code (not used).

C.2.1.2 Rebuilding of Kernel

After you have edited the "st_conf.c" file and added the above entry, rebuild thekernel using the standard procedure (for further help, refer to the man pages of the config command).

C.2.1.3 Installation of tape drive

Install the tape drive into the storage subsystem and power on the workstation. We recommend that the SWXTL SCSI device address be set to ID 4 or 5.

C–2 Order Number: EK-SM1TB-UG. E01

Appendix C. Product Notes for Sun

NOTE

If your SCSI host adapter is supported by the “probe-scsi” command, you can use this command at the boot prompt to verify that the connected device is correctly attached to the system.

C.2.1.4 Rebooting of system

Reboot the system, using the following command at the boot prompt:

>boot

The system reboots with the newly compiled kernel and creates special files in /dev so that it can communicate with the SWXTL SBB. Verify that “

DLT Streaming /w Compression

” is displayed as a target when the system is

DEC TZ87 10GB Cart.

booting. At this time the tape is configured in the /dev directory with "rst" (rewind on close) and

"nrst" (no rewind on close) format. If the entry in the kernel configuration file for the SWXTL SBB were st4, for example, then "rst" would be "rst4, rst12, rst20, rst28" and nrst would be"nrst4, nrst12, nrst20, nrst28".

• rst4 and nrst4 correspond to the 0x17 density mode (TK85 format)

• rst12 and nrst12 correspond to the 0x18 density mode (TK86 format)

• rst20 and nrst20 correspond to the 0x80 density mode (TK87 native format)

• rst28 and nrst28 correspond to the 0x81 density mode (TK87, compressed format)

C.2.1.5 Testing the SWXTL SBB

To test the SWXTL drive, back up the “passwd” file to tape using the “tar” command, as follows:

tar cvf /dev/rst4 /etc/passwd

The system responds with:

a /etc/passwd 1 blocks

Note that depending on the size of the file, a different number of blocks may be reported.

C.2.1.6 Verification

Verify that the “passwd” file was written to tape using the following command:

tar tvf /dev/rst4

The system responds with:

/etc/passwd

The installation and verification procedure is now complete.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

C.2.2 Dump Parameters for the Tape Drive

The parameters that should be used when running the dump utility with the SWXTL tape drive are:

density: 62500 (BPI) size: 1200 (1200-foot tape) blocking factor: 126

Example 1

The following example shows backing up the entire disk partition onto the SWXTL tape drive:

dump 0dsbf 62500 1200 126 /dev/rst20 /dev/sd0g

For further help, refer to man pages of the dump command.

C.3 Modifications Required for Solaris 2.3 (or later)

C.3.1 Installation Procedure

NOTES

1. The “SWXTL” designation in the following procedure is the StorageWorks product name for the TZ87 tape drive.

2. I n order to support the addition of this device, drive information must be supplied in the global properties that apply to each of the targets, or as properties that are applicable to one target only. The "st driver" looks for the property called "tape-config-list". For additional information, read the man page “st”. We recommend here the use of the global properties approach.

/kernel/drv/st.conf

file as

C.3.1.1 System Modification

Perform the following steps to modify the system to communicate with the SWXTL tape drive:

1. From the command line, type:

cd /kernel/drv

2. Edit the “st.conf” file by adding the following before the first occurrence of

“name=":

# entry for TZ87 tape drive tape-config-list = "DEC TZ87",

"DEC 10GB Cart. DLT Streaming /w Compression”, “TZ87-data”; TZ87-data = 1,0x36,8192,0x1639,4,0x17,0x18,0x80,0x81,3;

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where: In the “tape-config-list” parameter:

Appendix C. Product Notes for Sun

• The first parameter (

DEC TZ87) is the parameter returned by the SWXTL

SBB on a SCSI inquiry command. (There should be five spaces between “ and “

TZ87” elements.)

• The second parameter (DEC 10GB Cart. DLT Streaming /w

compression) is a nickname for the SWXTL drive.

• The third parameter is defined as follows:

In the “TZ87-data” string: – The first parameter (1) is the revision level of the software and is set to 1. The

first parameter (1) is the revision level of the software and is set to 1.

– The second parameter (

(This is defined

in /usr/include/sys/mtio.h.)

0x36) is the tape type, specifying “other” tape drive.

– The third parameter (8192) is the block size in bytes. – The fourth parameter (

0x1639) defines the options selected. The 0x1639

value represents the following options:

ST_VARIABLE = 0x0001 ST_BSF = 0x0008 ST_BSR = 0x0010 ST_LONG_ERASE = 0x0020 ST_KNOWS_EOD = 0x0200 ST_UNLOADABLE = 0x0400 ST_LONG TIMEOUTS = 0x1000

DEC”

– The fifth parameter (

4) defines the number of densities. The maximum

definable number of densities is 4.*

– The sixth parameter (

0x17) is the vendor-unique density code for the TK85

(2.6 GB).

– The seventh parameter (

0x18) is the vendor-unique density code for TK86

(6.0 GB).

– The eighth parameter (

0x80) is the vendor-unique density code for the TK87

native (10 GB).

– The ninth parameter (

0x81) is the default density code for the TK87

compressed mode.

– The last parameter in the SWXTL-data parameter is the default density 3,

TK87 in the compressed mode.

_______________

*This maximum definable number of densities is a Sun Operating System limitation.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

C.3.1.2 System Shutdown

After you have edited the “st.conf” file, shut down the system as follows:

sync cd /

shutdown -i0 -g0 -y

C.3.1.3 Installation of the Tape Drive

Install the tape drive into the storage subsystem and power on the workstation. We recommend that the SWXTL SCSI device address be set to ID 4 or 5.

If your SCSI host adapter is supported by the “probe-scsi” command, then you can use this command at the boot prompt to verify that the connected device is correctly attached t o the system.

C.3.1.4 Rebooting of System

Reboot the system using the following command at the boot prompt:

NOTE

>boot -rv

Note that the switch "r" forces the kernel to be re-configured, and switch "v" enables a display of the system configuration at boot time.

The system compiles the kernel and creates special files in /dev so that it can communicate with the SWXTL SBB. Since you booted the system using the verbose switch, the system displays all of its SCSI targets. Verify that “DEC 10GB Cart. DLT Streaming /w Compression” is displayed as a target when the system is booting.

At this time, the tape drive is configured in the /dev directory in two ways: rmt format, and rst format.

“rmt” format

In this format, the drive is configured with various options. For further explanations, see the man pages on “st” (the modes are x, xl, xm, xh, xc, and xu, where x is the rmt number).

• Options x, xu, and xc, correspond to the 0x81, (TK87, compressed) density mode.

• Option xl, corresponds to the 0x17 (TK85) density mode.

• Option xm corresponds to 0x18 (TK86) density mode.

• Option xh corresponds to 0x80 (TK87, native) density mode.

• Option b associates with the BSD behavior and is for backward compatibility on all

of the above options. For further information, refer to the man pages of “mtio”.

• The n option provides access to the device with no rewind, similar to nrst (below),

and is also applicable to all of the above options.

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Appendix C. Product Notes for Sun

“rst” format

Special files “rst” (rewind on close) and “nrst” (no rewind on close) are also built and reside in the /dev directory. For example, if the SCSI target ID for the SWXTL drive is 4 and

the drive is connected to the native SCSI bus, then “rst” will be “rst4, rst12, rst20,

and rst28” and nrst will be “nrst4, nrst12, nrst20, and nrst28”.

• rst4 and nrst4 correspond to the 0x17 density mode (TK85 format)

• rst12 and nrst12 correspond to the 0x18 density mode (TK86 format)

• rst20 and nrst20 correspond to the 0x80 density mode (TK87, native format)

• rst28 and nrst28 correspond to the 0x81 density mode (TK87, compressed format)

C.3.1.5 Test

To test the SWXTL drive, back up the “passwd” file to tape using the “tar” command, as follows:

tar cvf /dev/rst4 /etc/passwd

The system responds with:

a /etc/passwd 1 blocks

Note that, depending on the size of the file, a different number of blocks may be

reported.

C.3.1.6 Verification

Verify that the “passwd” file was saved to tape using the following command:

tar tvf /dev/rst4

The system responds with

/etc/passwd

The installation and verification procedure is now complete.

C.3.2 Running Sun Diagnostics (Optional)

The diagnostic exerciser provided with the Sun operating system (“sundiag”) does not support the generic DLT tape drive configuration. In order to run “sundiag”, you must modify the st.conf file in the /kernel/drv directory. Change the “tape type” in the SWXTL-data parameter from 0x36 (generic other type of drive) to 0x29 (Exabyte 8500 8mm cartridge) and re-boot the system with the “boot -r” option. You can now run “sundiag” when the system is up and running.

CAUTION

Remember to change the “tape type” back to 0x36 and reboot the system with the “boot -r” option after running “sundiag”.

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

C.3.3 Dump Parameters for the Tape Drive

The parameters that should be used when running the ufsdump utility with the SWXTL tape drive are as follows:

density (d) = 62500 (BPI)

blocking factor = 126 Example, The following parameter is an example of how to back up the entire disk partition

(/dev/rdsk/c0t3d0s6) onto the SWXTL tape drive:

ufsdump 0dbfo 62500 126 /dev/rmt/2 /dev/rdsk/c0t3d0s6

C–8 Order Number: EK-SM1TB-UG. E01

Product Notes for IBM™ RS/6000

This appendix provides information for the system administrator. It should be read before installing and using the SWXTL-BA tape drive SBB with a host system with the AIX 3.2.5 (or later) operating system.

D.1 Modifications Required to Operate the SWXTL-BA with AIX 3.2.5 (or later)

After the SWXTL-BA tape drive has been properly attached to the SCSI bus, install the device using "smit" or by executing specific commands while logged into the root account. Section D.1.1 below describes how to install the tape drive using the fast-path command (smit dev). Section D.1.2 describes how to install the device using the command-line interface.

D.1.1 Installing the SWXTL-BA Using the SMIT Command

While the SWXTL-BA can operate with a variable block size (0) or the conventional values of 512 or 1024, for best performance us a block sixe of at least 10240.



From the command line, type:

# smit dev



Select menu entry "Configure the devices you have added after the IPL".



Select menu entry "Change/show the characteristics". a) Select the entry that matches the controller and target ID of your installation.

Example: rmt1 available 00–03–00–50 other SCSI tape drive

where 3 is the SCSI controller number and 5 is the SCSI target ID

b) On the menu, change the settings of the "BLOCK size", "DENSITY setting #1", and

"DENSITY setting #2".

Set “BLOCK size” to 10240.

Set “DENSITY setting #1” to 129.

Set “DENSITY setting #2” to 128.

Density codes are listed in Section D.1.2 below.

c) Accept the changes.

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StorageWorks DLT 10/20-GB Cartridge Tape Drive

D.1.2 Installing the SWXTL-BA Using Command-Line Interface



From the command line, type:

# cfgmgr



To determine which rmt has been added, type:

# lsdev –Cc tape

Example:

# lsdev –Cc tape

Name Status Location Description rmt0 Available 00–03–00–50 Other SCSI Tape Drive



Next, type:

# chdev –l <rmt*> –a density_set_1=129 –a density_set_2=128



Finally, type the following:

# chdev –l <rmt*> –a block_size=<SIZE>

Example:

# chdev –l rmt0 –a block_size=10240

rmt0 changed

where, <rmt*> is the tape drive added as shown by the lsdev command. <SIZE> is the fixed block size (0 = variable, 10240 is suggested).

Density code “129” specifies compressed format while “128” specifies uncompressed format. In rare cases, other density codes may be useful. The legal values for the density code are listed in the following table:

Density Code Meaning

10 TK50 – 6667 bpi FMF serial cartridge tape X3B5/86-199 (read-only) 22 TK70 – 10000 bpi FMF serial cartridge tape X3.193-1990 (read-only) 23 TK85 – 42500 bpi FMF serial cartridge tape X3B5/91-1174, 2.6 GB 24 TK86 – Same as TK85 except with 56 track pairs versus 24, 6.0 GB

25 TK87 – 62500 bpi, 64 track pairs, serial cartridge tape, 10 GB (native) 127 No change from previous density (Mode Select) 129 TK87 format, compression DISABLED 128 TK87 format, compression ENABLED

D

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Appendix D. Product Notes for IBM RS/6000

The files that are created are:

Tape Drive Special File Characteristics

Special File Name Rewind-on-Close Retention-on Open Bytes-per-Inch

/dev/rmt* /dev/rmt*.1 /dev/rmt*.2 /dev/rmt*.3 /dev/rmt*.4 /dev/rmt*.5 /dev/rmt*.6 /dev/rmt*.7

Yes No Density Setting # 1

No No Density Setting # 1

Yes Yes Density Setting # 1

No Yes Density Setting # 1

Yes No Density Setting # 2

No No Density Setting # 2

Yes Yes Density Setting # 2

No Yes Density Setting # 2

NOTES

1. The suggested values of compressed and uncompressed format respectively. The only use of uncompressed format is to determine the relative effectiveness of the compressed mode.

2. The

3. IBM-supplied tape drives default to a block size of 1024 while tape

density value

TK70, TK85, and TK86 cartridges.

drives from other manufacturers default to a block size of 512. StorageWorks recommends changing the block size of the SWXTLAA to be compatible with the IBM-supplied drives. However, for some uses such as making bootable tapes or transferring tapes between host systems, a value of 512 or 0 (variable size) may be needed.

can be useful in reading tapes on earlier TK50,

density setting #1

and #2 are for

Order Number: EK–SMITB–UG. E01 D–3

Product Notes for Hewlett-Packard

This appendix describes how to include the tape drive in an HP 9000 Series 700 system running HP-UX 9.05 or

10.00 and an HP 9000 Series 800 running HP-UX 9.04 or 10.00. The information covers configuration of the host system to communicate with the tape drive.

E.1 General Information

If the necessary drivers are not already built into your existing kernel, you will need to rebuild your kernel.

When using the dump utility, you must supply the correct density code and tape length size for dump to use in its calculations. Refer to Section E.6 for details. We recommend a value of 126 for the blocking factor parameter.

For this device to be recognized and operational on the S800 servers, it personality was changed to that of an EXABYTE 8505. Ensure you have the SWHTL part number, not the SWXTL one.

E.2 Modifications Required

E.2.1 Installation Procedure

The “EXABYTE EXB-8505” designation in the following procedure is the StorageWorks internal name of the SWHTL Part number. The "DEC TZ87" designation in the following procedure is the StorageWorks internal name for the SWXTL part number.

E.2.1.1 Installation of Tape Drive

Install the tape drive into the StorageWorks enclosure and power-on the workstation. Ensure that the address of the tape drive does not conflict with the address of any other device on that SCSI bus.

E.2.1.2 System Modification

Enter the System Administration Manager (SAM) as superuser. From the first-level menu, choose Peripheral Devices. From the second-level menu, choose Tape Drives. The system’s hardware will be scanned, and the “available tape drives” window will identify the tape drive as a SCSI Tape Drive (HP-UX 9.05, 9.04) or as a “EXB-8505 5 GB 8mm Tape Drive” (HP-UX 10.00) for the SWHTL, and as a “DEC TZ87” (HP-UX 10.00) for the SWXTL with the appropriate hardware path. Highlight that selection and then pull down the

NOTES

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

Actions menu and select the Add function. The program at this time will check the kernel to determine if the necessary drivers are built in, displaying the results.

If necessary, the program will rebuild the kernel. If this occurs, you will have to reboot the system in order to use the tape drive. For further information on adding tape devices, refer to Hewlett-Packard’s Installing Peripherals manual, P/N B2355-40041.

E.3 Series 700 System Device Files

The System Administration Manager program automatically creates the appropriate device files and places them in the /dev/rmt directory, when adding the device through SAM. Additionally, the device files are created automatically upon system initialization.

E.3.1 HP–UX 9.05

The following naming convention is used for the tape drive SBB, as shown in the examples listed below:

/dev/rmt/c#d#[hlmc][n][b]

where: c# specifies the controller designation, which may contain either two or

three characters, specifies the following:

where # is sc[f], in accordance with the following:

s is the system bus module:

2 = core I/O (the default) 4 = EISA SCSI

c is the slot number:

0 for core I/O n for EISA, the value is determined by the slot number as reported

by the H/W path reported by “ioscan.”

f is the function number. This value identifies the location on the core I/O

bus. For the SCSI interface, the value is 1. If you are using the EISA SCSI interface, the f value is 0.

d# designates the SCSI address of the tape drive, where # here identifies a

number value.

h/l/m/c specifies density, with h meaning high density, l meaning low density,

m meaning standard DDS format, and c meaning data compression.

n specifies no rewind on close. b specifies Berkeley behavior.

For additional information about magnetic tape operation, refer to mt(7) of the manual (P/N B 2355-90033) or the Man pages.

_______________

The

h, l, and m device designations all yield the same result. The c device designation enables

compression.

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HP-UX Reference

Appendix E. Product Notes for Hewlett-Packard

Examples

For a tape drive SBB installed in slot location 4 of the StorageWorks SWXSE-02 expansion enclosure connected to the main (core) SCSI bus, the following device files would be produced in the directory /dev/rmt:

c201d4c c201d4l c201d4cb c201d4lb c201d4cn c201d4ln c201d4cnb c201d4lnb c201d4h c201d4m c201d4hb c201d4mb c201d4hn c201d4mn c201d4hnb c201d4mnb

For a tape drive SBB installed in slot location 4 of the StorageWorks SWXSE-02 expansion enclosure connected to a SCSI adapter in EISA slot 1, the following device files would be produced in the directory /dev/rmt:

c410d4c c410d4l c410d4cb c410d4lb c410d4cn c410d4ln c410d4cnb c410d4lnb c410d4h c410d4m c410d4hb c410d4mb c410d4hn c410d4mn c410d4hnb c410d4mnb

E.3.2 HP–UX 10.00

The following naming convention is used on systems which support long filenames for the DLT format tape drive, as shown in the examples below:

/dev/rmt/c#t#d#BEST[n][b]

where:

c# specifies the instance number of the interface card t# specifies the SCDI address of the tape drive d# specifies the device number (LUN) at the SCSI address BEST specifies the highest capacity density, which for this device is the TK87

compressed format

n specifies no rewind on close b specifies Berkeley behavior

Examples: For a tape drive SBB installed in slot location 4 of the StorageWorks SWXSE-02 expansion

enclosure connected to the main (core) SCSI bus, the following device files would be produced in the directory /dev/rmt:

c0t40BEST c0t40BESTnb c0t4d0BESTb c0t40BESTnb

For systems which do not support long file names, the following device naming conventions is used:

#m #mb #mn #mnb

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StorageWorks DLT 10/20 GB Cartridge Tape Drive

where:

# specifies an arbitrary number to distinguish this tape drive from others N specifies no rewind on close b specifies Berkeley behavior

This tape drive will read both TK85 (2.6 MB) and TK86 (6.0 MB) densities but will not write these densities to the above device files. Use the front panel override button to write these densities.

To list the device files associated with each device, issue the command “ioscan -f -n/more”.

E.4 Series 800 System Device Files

The System Administration Manager program automatically creates the appropriate device files and places them in the /dev/rmt directory when adding the device through SAM. Additionally, the device files are created automatically upon system initialization..

E.4.1 HP–UX 9.04

NOTE

The following naming convention is used for the tape drive SBB, as shown in the examples listed below:

/dev/rmt/lu[l|m|h[c]][n][b]

where: lu specifies the logical unit as reported for the tape drive using the “ioscan -

f” commmand

h/l/m/c specifies density, with h meaning high density, l meaning low density,

m meaning standard DDS format, and c meaning data compression

n specifies no rewind on close b specifies Berkeley behavior

For additional information about DDS tapes, refer to mt(7) of the HP-UX Reference manual (P/N B 2355-90033).

Example

If you were to install a tape drive SBB in the StorageWorks SWXSE-02 expansion enclosure, the following device files would be produced for the device having a logical unit number of 4 in the directory /dev/rmt:

4hc 4l 4hcb 4lb 4hnc 4ln 4hncb 4lnb 4h 4m 4hb 4mb 4hn 4mn 4hnb 4mnb

The h, l, and m device designations all yield the same result. To disable compression, use the front panel

override button and select the desired density

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Appendix E. Product Notes for Hewlett-Packard

E.4.2 HP-UX 10.00

The following naming convention is used on systems which support long filenames for the DLT format tape drive SBB, as shown in the examples below:

/dev/rmt/c#t#d#BEST[n][b]

where:

compressed format

n specifies no rewind on close b specifies Berkeley behavior

Examples: For a tape drive SBB installed in slot location 4 of the StorageWorks SWXSE-02 expansion

enclosure connected to the main (core) SCSI bus, the following device files would be produced in the directory /dev/rmt:

c0t40BEST c0t40BESTnb c0t4d0BESTb c0t40BESTnb

For systems which do not support long file names, the following device naming conventions is used:

#m #mb #mn #mnb

where:

# specifies an arbitrary number to distinguish this tape drive from others N specifies no rewind on close b specifies Berkeley behavior

This tape drive will read both TK85 (2.6 MB) and TK86 (6.0 MB) densities but will not write these densities to the above device files. Use the front panel override button to write these densities.

To list the device files associated with each device, issue the command “ioscan -f -n/more”.

E.5 Testing the Tape Drive

NOTE

To test the tape drive, back up the “passwd” file to tape using the “tar” command, as follows (assuming that you installed the drive in accordance with the preceding example):

tar cvf /dev/rmt/4h /etc/passwd

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The system responds with something similar to the following:

a /etc/passwd 1 blocks

Note that depending on the size of the file, a different number of blocks may be reported.

E.5.1 Verification

Use the following command to verify that the “passwd” file was written to tape: (use the correct device filename for the platform and operating system in use)

tar tvf /dev/rmt/c201d4h

The system responds with something similar to the following:

rw-r--r-- 0/10 535 Mar 23 16:31 1994 /etc/passwd

The installation and verification procedure is now complete.

E.6 Dump Parameters for the Tape Drive

The parameters that should be used when running the dump utility with the tape drive are:

density = 62500 (for DDS1 or DDS2 tapes) size = 1200 (for 1200 foot tape) blocking factor = 126 (recommended)

Example:

The following example shows the command for backing up an entire disk partition onto the tape drive, using a 120-meter tape:

(use the correct device filename for the platform and operating system in use)

dump 0dsbf 62500 1200 126 /dev/rmt/c201d4h /dev/dsk/c202d6S0

For further help, refer to man pages of the dump command.

E–6 Order Number: EK–SM1TB–UG. E01

Reader’s Comments

Manual Order Number:

EK–SM1TB–UG. E01

DLT 10/20-GB Cartridge Tape Drive –StorageWorks Building Block (SWXTL-BA) / –Tabletop Tape Drive (SWXTL-BT)

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StorageWorks SWXTL-BA, SWHTL-BA, SWXTL-BT User Manual

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