HP C737990900 Product manual

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

2
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
copyright. All rights reserved. No
part of this document may be
photocopied, reproduced or
translated to another language
without the prior written consent of
Hewlett-Packard.
© Copyright 2000–2003 by
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.

3
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.

4
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

5
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

6
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

7
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: [phone]
Web URL: http://www.ecma.ch
Global Engineering Documents 2805 McGaw
Irvine, CA 92714
USA
Tel: [phone] or 714 261 1455

8

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