HP C737990900 Manuale del prodotto

the SCSI

interface

hp ultrium drives

technical reference manual

generation 2 SCSI and FC drives

volume 3: the SCSI interface

Part Number: C7379–90900 Volume 3

Edition 4, February 2003

Notice

The information contained in this

document is subject to change

without notice.

Hewlett-Packard makes no

warranty of any kind with regard to

this material, including, but not

limited to, the implied warranties of

merchantability and fitness for a

particular purpose. Hewlett-Packard

shall not be liable for errors

contained herein or direct, indirect,

special, incidental or consequential

damages in connection with the

furnishing, performance, or use of

this document.

Revision History

This document contains proprietary

information which is protected by

part of this document may be

photocopied, reproduced or

translated to another language

without the prior written consent of

Hewlett-Packard.

Hewlett-Packard Limited

Version Date Changes

Edition 1 Nov. 2000 All

Edition 2 Mar. 2001 Addition of Read and Write attribute commands and Drive Error Codes

Edition 3 May 2002 Inclusion of the Request Block Address command and the Control mode

page, together with numerous small changes

Edition 4 Feb 2003 Generation 2 SCSI and FC drive version

This document is frequently revised and updated. To find out if there is a

later version, please ask your HP OEM Representative.

The Purpose of this Manual

This is one of five volumes that document HP Ultrium drives. This volume

provides background information for driver and application developers. The

following products are covered. Capacities are when the drive is using data

compression with a compression ratio of 2:1, where applicable:

■HP Ultrium Generation 2 Full-Height SCSI Internal Drive

■HP Ultrium Generation 2 Full Height FC Internal Drive

Note Throughout this manual frequent reference is made to SCSI

commands. For more information on SCSI commands for

HP Ultrium drives see volume 3, the SCSI Interface, of the

HP Ultrium Technical Reference Manual. Ordering details are

given below.

Related Documents

The following documents provide additional information:

Documents Specific to HP Ultrium Drives

■Hardware Integration Guide, volume 1 of the HP Ultrium Technical

Reference Manual

■The SCSI Interface, volume 3 of the HP Ultrium Technical Reference

Manual

■Specifications, volume 4 of the HP Ultrium Technical Reference Manual

■HP Ultrium Configuration Guide, volume 5 of the HP Ultrium Technical

Reference Manual

■Background to Ultrium Drives, volume 6 of the HP Ultrium Technical

Reference Manual

Please contact your HP supplier for copies.

■The features and benefits of HP Ultrium drives are discussed in the

HP Ultrium Technology White Paper.

■For a general backgrounder on LTO technology and licensing, go to

http://www.lto-technology.com.

Documentation Map

The following will help you locate information in the 6-volume Technical

Reference Manual:

Drives—general

Installation and Configuration

Operation

SCSI Drives FC Drives

Connectors 1HW Integration: ch. 7 1HW Integration: ch. 4

Controller architecture 6Background: ch. 4

Front Panel LEDs 1HW Integration: ch. 6 1HW Integration: ch. 3

Mechanism and hardware 6Background: ch. 3

Specifications 4Specs

SCSI Drives FC Drives

Connectors 1HW Integration: ch. 7 1HW Integration: ch. 4

Determining the configuration 2SW Integration: ch. 2 2SW Integration: ch. 2

External drives (SCSI only) 1HW Integration: ch. 5n/a

In Libraries 1HW Integration: ch. 1

In Servers (SCSI only) 1HW Integration: ch. 4n/a

In Tape Arrays (SCSI only) 1HW Integration: ch. 3n/a

Modes of Usage (SCSI only) 1HW Integration: ch. 8n/a

Optimizing performance (SCSI only) 1HW Integration: ch. 8n/a

2SW Integration: ch. 4

UNIX configuration 5UNIX Config

SCSI Drives FC Drives

External drives (SCSI only) 1HW Integration: ch. 5n/a

In Libraries 1HW Integration: ch. 1

In Servers (SCSI only) 1HW Integration: ch. 4n/a

In Tape Arrays (SCSI only) 1HW Integration: ch. 3n/a

Cartridges

Interface

Maintenance and Troubleshooting

SCSI Drives FC Drives

Cartridge Memory (LTO-CM) 2SW Integration: ch. 5

6HW Integration: ch. 5

Cartridges 1HW Integration: ch. 9 1HW Integration: ch. 5

Features 6HW Integration: ch. 5

Managing the use of cartridges 2SW Integration: ch. 1

Use of cartridges 2SW Integration: ch. 3

SCSI Drives FC Drives

SCSI Guide 3SCSI

Commands 3SCSI: ch. 4

Error codes 1HW Integration: ch. 10 1HW Integration: ch. 6

Implementation 3SCSI: ch. 1

Interpreting sense data 2SW Integration: ch. 3

Messages 3SCSI: ch. 2

Mode pages

—see the MODE SENSE command 3SCSI: ch. 4

Pre-execution checks 3SCSI: ch. 3

Responding to Sense Keys and ASC/Q 2SW Integration: ch. 6

Sense Keys and ASC/Q

—see REQUEST SENSE command 3SCSI: ch. 4

SCSI Drives FC Drives

Cleaning 2SW Integration: ch. 5

2SW Integration: ch. 7

External drives (SCSI only) 1HW Integration: ch. 5n/a

In Libraries 1HW Integration: ch. 1

In Servers (SCSI only) 1HW Integration: ch. 4n/a

In Tape Arrays (SCSI only) 1HW Integration: ch. 3n/a

Monitoring drive and tape condition 2SW Integration: ch. 7

Software troubleshooting techniques 2SW Integration: ch. 1

Dealing with Errors

Ultrium Features

SCSI Drives FC Drives

Error Codes 1HW Integration: ch. 10 1HW Integration: ch. 6

Handling errors 2SW Integration: ch. 5

How error correction works 6Background: ch. 4

Logs—see the LOG SENSE command 3SCSI: ch. 4

Recovering from write and read errors 2SW Integration: ch. 7

Software response to error correction 2SW Integration: ch. 3

Software response to logs 2SW Integration: ch. 3

TapeAlert log 2SW Integration: ch. 7

SCSI Drives FC Drives

Adaptive Tape Speed (ATS) 6Background: ch. 1

Autoload 1 HW Integration: ch. 2

Automation Control Interface (ACI) 1 HW Integration: ch. 2

6 Background: ch. 1

Cartridge Memory (LTO-CM)s 1 HW Integration: ch. 2

2SW Integration: ch. 5

6HW Integration: ch. 5

Data Compression, how it works 6Background: ch. 5

Data Compression, managing 2SW Integration: ch. 5

Design principles 6Background: ch. 1

OBDR and CD-ROM emulation 6Background: ch. 1

2SW Integration: ch. 7

Performance optimization 1HW Integration: ch. 8n/a

2SW Integration: ch. 1

Performance, factors affecting 2SW Integration: ch. 4

Software design 2SW Integration: ch. 1

Supporting Ultrium features 2SW Integration: ch. 5

Ultrium Format 6Background: ch. 2

General Documents and Standardization

■Small Computer System Interface (SCSI-1), ANSI X3.131-1986. This is the

ANSI authorized standard for SCSI implementation, available through

ANSI

■Enhanced Small Computer System Interface (SCSI-2), ANSI X3T9.2-1993

Rev. 10L, available through ANSI

Copies of General Documents can be obtained from:

ANSI 11 West 42nd Street

New York, NY 10036-8002

USA

ISO CP 56

CH-1211 Geneva 20

Switzerland

ECMA 114 Rue du Rhône

CH-1204 Geneva

Switzerland

Tel: +41 22 849 6000

Web URL: http://www.ecma.ch

Global Engineering Documents 2805 McGaw

Irvine, CA 92714

USA

Tel: 800 854 7179 or 714 261 1455

Contents 9

The Purpose of this Manual 3

Related Documents 3

Documents Specific to HP Ultrium Drives 3

Documentation Map 4

General Documents and Standardization 7

1Interface Implementation 13

The SCSI Interface 13

Supported Messages 14

Supported Commands 14

SCSI Features 15

Design Approach 15

Power-On 15

Reset Strategy 15

Abort Handling 16

Bus Parity Errors (Parallel SCSI only) 18

Disconnect Strategy (Parallel SCSI only) 19

Multi-Initiator Support 19

Fibre Channel Operation 20

Fibre Channel Addressing 20

Names 20

Addresses 21

HP’s Implementation of Names and Addresses 21

Implications for Libraries 22

Field Replaceable Units 23

Descriptions of Signals (Parallel SCSI only) 23

contents

Contents

10 Contents

2Messages 25

Message Out Support (Parallel SCSI only) 25

Message In Support (Parallel SCSI only) 26

Extended Message Support 27

Status 29

3Commands—Introduction 31

Summary 31

Command Details 32

Pre-Execution Checks 32

Bad LUN Check 32

Deferred Error Check 33

Diagnostic Status Check 33

Fixed Bit Check 34

Flag Link Check 34

Illegal Command Check 34

Illegal Field/Request Check 34

Media Access Check 35

Media Information Check 36

Media Write Check 37

Parameter List Check 37

Reservation Check 37

Unit Attention Check 38

Command Descriptor Block 38

4Commands 41

ERASE 19h 42

INQUIRY 12h 44

INQUIRY Data Pages 45

Vital Product Data Pages 49

Supported Vital Product Data Pages Page 49

Unit Serial Number Page 50

Device Identification Page 51

Defined Identifiers 52

Drive Component Revision Levels Pages 53

LOAD/UNLOAD 1Bh 55

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