Quantum SDLT 600, 1200 Series DAT Autochanger User's Guide

$

6'/7

,QWHUIDFH*XLGH,QWHUIDFH*XLGH,QWHUIDFH*XLGH

6&6,

SDLT 600 Fibre Channel Interface Guide, 81-81200-02 A01, December 2007, Made in USA.

Quantum Corporation provides this publication “as is” without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability or fitness for a particular purpose. Quantum Corporation may revise this publication from time to time without notice.

Your right to copy this document is limited by copyright law. Making copies or adaptations without prior written authorization of Quantum Corporation is prohibited by law and constitutes a punishable violation of the law.

TRADEMARK STATEMENT

Quantum, DLT, DLTtape, the Quantum logo, and DLTtape logo are all registered trademarks of Quantum Corporation. SDLT and Super DLTtape are trademarks of Quantum Corporation.

Other trademarks may be mentioned herein which belong to other companies.

SDLT 600 SCSI Interface Guide Table of Contents

81-81200-02

REV A01

Ta b l e o f C o n t e n t s

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Purpose and Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Referenced Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Structure of this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

For More Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Reader Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SCSI Parallel Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Background Information About SCSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Information Transfer Phases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

SCSI Bus Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Attention Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Reset Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

3 SCSI Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Message Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Supported SCSI Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

ABORT TASK SET (06h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

TARGET RESET (0Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

TASK COMPLETE (00h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

DISCONNECT (04h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

IDENTIFY (80h - FFh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

IGNORE WIDE RESIDUE (23h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

INITIATOR DETECTED ERROR (05h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

LOGICAL UNIT RESET (17h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

81-81200-02 REV A01 January 2005 v

Table of Contents SDLT 600 SCSI Interface Guide

MESSAGE PARITY ERROR (09h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

MESSAGE REJECT (07h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

NO OPERATION (08h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

PARALLEL PROTOCOL REQUEST (extended message 04h) . . . . . . . . . . . . . . . . . . . . . . . 3-10

RESTORE POINTERS (03h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

SAVE DATA POINTER (02h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

SYNCHRONOUS DATA TRANSFER REQUEST (extended message 01h) . . . . . . . . . . . . . 3-12

WIDE DATA TRANSFER REQUEST (extended message 03h). . . . . . . . . . . . . . . . . . . . . . . 3-14

4 SCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Overview of SCSI Command and Status Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Status and Error Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

DATA Phase Command Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Unit Attention Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Behavior at Power-On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Data Cache and Tape Write Interaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

SCSI Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

ERASE Command (19h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

INQUIRY Command (12h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Standard Inquiry Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Vendor Specific Inquiry Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

Vital Product Data Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Supported Vital Product Data Page (00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Unit Serial Number Page (80h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Device Identification Page (83h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

Firmware Build Information Page (C0h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

Subsystem Components Revision Page (C1h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

LOAD UNLOAD Command (1Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

LOCATE Command (2Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30

LOG SELECT Command (4Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

Overview: LOG SELECT Command Descriptor Block Errors . . . . . . . . . . . . . . . . . . . . . . . . 4-33

Operation of LOG SELECT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

LOG SELECT Log Page Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Error Detection Summary in LOG SELECT Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38

LOG SENSE Command (4Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

Error Summary in LOG SENSE Command Descriptor Block . . . . . . . . . . . . . . . . . . . . . . . . . 4-41

Supported Pages Log Page (Page 00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42

Read (Page 03h) / Write (Page 02h) Error Log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-43

LAST n ERROR EVENTS Log Page (07h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-47

vi January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide Table of Contents

Sequential Access Device Log Page (0Ch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49

Temperature Log Page (0Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51

TapeAlert Log Page (2Eh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53

Read / Write Compression Log Page (32h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-57

Device Wellness Log Page (33h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61

Device Status Log Page (3Eh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-64

MODE SELECT (6) / (10) Command (15h / 55h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-67

Mode Parameter List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69

Mode Parameter Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-71

Mode Parameter Block Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-73

Mode Page Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75

Read / Write Error Recovery Page (01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-76

Disconnect / Reconnect Page (02h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-78

Control Mode Page (0Ah). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-80

Data Compression Page (0Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-82

Device Configuration Page (10h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-84

Medium Partition Page (11h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-87

Logical Unit Control Page (18h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-89

Port Control Page (19h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-90

TapeAlert Page (1Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-92

Vendor Specific Configuration Page (25h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-95

Disaster Recovery Control Page (3Ch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-97

EEPROM Vendor Specific Page (3Eh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-98

Changeable Parameters Within MODE SELECT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-105

MODE SENSE (6) / (10) Command (1Ah / 5Ah). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-107

MODE SENSE Data Headers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-109

MODE SENSE Block Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-111

MODE SENSE Mode Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-113

Read / Write Error Recovery Page (01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114

Disconnect / Reconnect Page (02h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-116

Control Mode Page (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-118

Data Compression Page (0Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-120

Device Configuration Page (10h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-122

Medium Partition Page (11h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-125

Logical Unit Control Page (18h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-126

Port Control Page (19h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-127

TapeAlert Page (1Ch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-129

Vendor Specific Configuration Control Page (25h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-131

Disaster Recovery Control Page (3Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-133

EEPROM Vendor Specific Page (3Eh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-134

81-81200-02 REV A01 January 2005 vii

Table of Contents SDLT 600 SCSI Interface Guide

PERSISTENT RESERVE IN Command (5Eh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-135

PERSISTENT RESERVE OUT Command (5Fh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-142

PREVENT / ALLOW MEDIUM REMOVAL Command (1Eh) . . . . . . . . . . . . . . . . . . . . . . . . . 4-152

READ Command (08h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-153

Filemark and End-of-Data Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-154

End-of-Medium/Partition Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-155

READ ATTRIBUTE Command (8Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-156

Error Summary for the READ ATTRIBUTE Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-157

READ ATTRIBUTE Service Action Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-158

ATTRIBUTE VALUES Service Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-159

ATTRIBUTE LIST Service Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-160

VOLUME LIST Service Action. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-161

PARTITION LIST Service Action. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-162

Enhanced Medium Auxiliary Memory (EMAM) Attributes . . . . . . . . . . . . . . . . . . . . . . . . . 4-163

Attribute Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-163

Attribute Identifier Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-165

Unique Features of the SDLT Tape Drive Implementation of Read / Write Attributes . . . . . 4-179

A Comparison of MAM and EMAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-179

READ BLOCK LIMITS Command (05h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-181

READ BUFFER Command (3Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-183

Retrieving Diagnostic Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-185

Read Data from the Saved Buffer (A1h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-185

Read Data from the Live Buffer (A2h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-185

Compression. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-186

Combined Header and Data Mode (00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-186

Data Mode (02h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-187

Descriptor Mode (03h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-187

Read Data from Echo Buffer (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-187

Echo Buffer Descriptor Mode (0Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-188

READ POSITION Command (34h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-189

Read Position Data — Short Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-190

Read Position Data — Long Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-192

RECEIVE DIAGNOSTIC RESULTS Command (1Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-194

RELEASE (10) Command (57h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-196

RELEASE UNIT Command (17h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-198

REPORT DENSITY SUPPORT Command (44h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-199

REPORT DEVICE IDENTIFIER Command (A3h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-204

REPORT LUNS Command (A0h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-206

REPORT SUPPORTED OPERATION CODES Command (A3h). . . . . . . . . . . . . . . . . . . . . . . . 4-208

All_commands Parameter Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-210

viii January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide Table of Contents

One_command Parameter Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-212

REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Command (A3h) . . . . . . . . . . 4-214

REQUEST SENSE Command (03h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-216

RESERVE (10) Command (56h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-228

RESERVE UNIT Command (16h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-230

REWIND Command (01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-232

SEND DIAGNOSTIC Command (1Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-233

Level 1 Test: Electronics Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-234

Level 2 Test: Write / Read Functionality Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-234

SET DEVICE IDENTIFIER Command (A4h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-237

SPACE Command (11h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-239

TEST UNIT READY Command (00h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-241

VERIFY Command (13h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-242

WRITE Command (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-243

WRITE ATTRIBUTE Command (8Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-245

Error Summary for the WRITE ATTRIBUTE Command . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-247

WRITE BUFFER Command (3Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-249

Write Combined Header and Data Mode (00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-250

Write Data Mode (02h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-250

Download Microcode Mode (04h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-251

Download Microcode and Save Mode (05h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-251

Write Data to Echo Buffer Mode (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-251

WRITE FILEMARKS Command (10h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-252

81-81200-02 REV A01 January 2005 ix

Table of Contents SDLT 600 SCSI Interface Guide

x January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide List of Tables

81-81200-02

REV A01

List of Tables

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Table 1-1. Typographical Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SCSI Parallel Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Table 2-1. Drive’s MESSAGE OUT Phase Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

3 SCSI Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Table 3-1. SCSI Message Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Table 3-2. SDLT Tape Drive Extended Message — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . 3-3

Table 3-3. SDLT Tape Drive Supported Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Table 3-4. Drive’s Response to DISCONNECT Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Table 3-5. IDENTIFY Message — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Table 3-6. IGNORE WIDE RESIDUE Message — Field Definitions . . . . . . . . . . . . . . . . . . . . . . . 3-7

Table 3-7. Drive’s Response to INITIATOR DETECTED ERROR Message . . . . . . . . . . . . . . . . . 3-8

Table 3-8. Features of the PARALLEL PROTOCOL REQUEST Message . . . . . . . . . . . . . . . . . . 3-11

Table 3-9. Transfer Periods and Transfer Rates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

4 SCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Table 4-1. SCSI Commands Supported by SDLT Tape Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Table 4-2. Status Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Table 4-3. Units for Length Fields. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Table 4-4. DATA Phase Command Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Table 4-5. Fields Common to Many SCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Table 4-6. ERASE Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . . . . . . . . . 4-10

Table 4-7. INQUIRY Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . . . . . . . 4-12

Table 4-8. Standard Inquiry Data Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

81-81200-02 REV A01 January 2005 xi

List of Tables SDLT 600 SCSI Interface Guide

Table 4-9. Vendor Specific Inquiry Data Page — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . 4-18

Table 4-10. Unit Serial Number Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Table 4-11. Device Identification Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

Table 4-12. Vendor-unique Logical Unit Identifier — Field Descriptions . . . . . . . . . . . . . . . . . . . 4-22

Table 4-13. Logical Unit NAA Identifier — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

Table 4-14. Firmware Build Information Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 4-25

Table 4-15. Subsystem Components Revision Page — Field Descriptions . . . . . . . . . . . . . . . . . . 4-27

Table 4-16. LOAD UNLOAD Command Descriptor Block — Field Descriptions . . . . . . . . . . . . 4-28

Table 4-17. LOCATE Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . . . . . . . 4-30

Table 4-18. LOG SELECT Command Descriptor Block — Field Descriptions. . . . . . . . . . . . . . . 4-32

Table 4-19. LOG SELECT Page-clearing Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

Table 4-20. LOG SELECT Log Page Header — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . 4-34

Table 4-21. LOG SELECT Log Parameters — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 4-35

Table 4-22. LOG SENSE Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . . . . 4-40

Table 4-23. Read / Write Error LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . 4-43

Table 4-24. Log Parameters for Read / Write Error LOG SENSE Page —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44

Table 4-25. Last n Error Events LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . 4-48

Table 4-26. Log Parameters for Last n Error Events LOG SENSE Page — Field Descriptions . . 4-48

Table 4-27. Sequential Access Device LOG SENSE Header — Field Descriptions . . . . . . . . . . . 4-49

Table 4-28. Sequential Access Device LOG SENSE Page Parameters — Field Descriptions . . . . 4-50

Table 4-29. Temperature LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 4-51

Table 4-30. Temperature LOG SENSE Parameters — Field Descriptions . . . . . . . . . . . . . . . . . . . 4-52

Table 4-31. TapeAlert Page LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . . . . 4-53

Table 4-32. TapeAlert Page LOG SENSE Parameters — Field Descriptions. . . . . . . . . . . . . . . . . 4-54

Table 4-33. TapeAlert Flags, Severity Levels, and Meanings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55

Table 4-34. Read / Write Compression Ratio LOG SENSE Header — Field Descriptions . . . . . . 4-57

Table 4-35. Log Parameters for Read / Write Compression Ratio LOG SENSE Page — Field

Descriptions (Parameter Codes 00h and 01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58

Table 4-36. Log Parameters for Read / Write Compression Ratio LOG SENSE Page — Field

Descriptions (Parameter Codes 02h through 09h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-59

Table 4-37. Device Wellness LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . . . 4-61

Table 4-38. Log Parameters for Device Wellness LOG SENSE Page — Field Descriptions . . . . . 4-63

Table 4-39. Device Status LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . . . . . 4-64

Table 4-40. Log Parameters for Device Status LOG SENSE Page — Field Descriptions . . . . . . . 4-65

Table 4-41. Log Parameters for Device Status LOG SENSE Parameter 0001h (Cleaning-Related) —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-66

Table 4-42. MODE SELECT (6)/(10) Command Descriptor Block — Field Descriptions . . . . . . 4-69

Table 4-43. MODE SELECT Mode Parameter List — Field Descriptions . . . . . . . . . . . . . . . . . . 4-70

Table 4-44. MODE SELECT Mode Parameter Header — Field Descriptions. . . . . . . . . . . . . . . . 4-72

xii January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide List of Tables

Table 4-45. MODE SELECT Mode Parameter Block Descriptor — Field Descriptions . . . . . . . . 4-74

Table 4-46. MODE SELECT Page Descriptor — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 4-75

Table 4-47. Read / Write Error Recovery MODE SELECT Page — Field Descriptions . . . . . . . . 4-77

Table 4-48. Disconnect / Reconnect MODE SELECT Page — Field Descriptions . . . . . . . . . . . . 4-79

Table 4-49. Control Mode MODE SELECT Page — Field Descriptions. . . . . . . . . . . . . . . . . . . . 4-80

Table 4-50. Data Compression MODE SELECT Page — Field Descriptions . . . . . . . . . . . . . . . . 4-83

Table 4-51. Device Configuration MODE SELECT Page — Field Descriptions. . . . . . . . . . . . . . 4-85

Table 4-52. Medium Partition MODE SELECT Page — Field Descriptions. . . . . . . . . . . . . . . . . 4-87

Table 4-53. Logical Unit Control MODE SELECT Page — Field Descriptions . . . . . . . . . . . . . . 4-89

Table 4-54. Port Control MODE SELECT Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . 4-90

Table 4-55. TapeAlert MODE SELECT Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . 4-92

Table 4-56. Vendor Specific Configuration MODE SELECT Page — Field Descriptions . . . . . . 4-96

Table 4-57. Disaster Recovery Control MODE SELECT Page — Field Descriptions. . . . . . . . . . 4-97

Table 4-58. EEPROM Vendor Specific MODE SELECT Page — Parameter Descriptions . . . . . 4-98

Table 4-59. Changeable Mode Parameters Within MODE SELECT . . . . . . . . . . . . . . . . . . . . . . 4-105

Table 4-60. MODE SENSE Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . 4-108

Table 4-61. MODE SENSE Data Header — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 4-110

Table 4-62. MODE SENSE Block Descriptor — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 4-112

Table 4-63. MODE SENSE Page — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-113

Table 4-64. Supported MODE SENSE Block Pages and Page Codes . . . . . . . . . . . . . . . . . . . . . 4-113

Table 4-65. Read / Write Error Recovery MODE SENSE Page — Field Descriptions . . . . . . . . 4-115

Table 4-66. Disconnect / Reconnect MODE SENSE Page — Field Descriptions . . . . . . . . . . . . 4-117

Table 4-67. Control Mode MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . 4-118

Table 4-68. Data Compression MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . 4-120

Table 4-69. Device Configuration MODE SENSE Page — Field Descriptions. . . . . . . . . . . . . . 4-123

Table 4-70. Medium Partition MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . . 4-125

Table 4-71. Logical Unit Control MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . 4-127

Table 4-72. Port Control MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . 4-128

Table 4-73. TapeAlert MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . 4-130

Table 4-74. Vendor Specific Configuration Control MODE SENSE Page — Field Descriptions 4-132

Table 4-75. Disaster Recovery Control MODE SENSE Page — Field Descriptions . . . . . . . . . . 4-133

Table 4-76. EEPROM Vendor Specific MODE SENSE Page — Field Descriptions. . . . . . . . . . 4-134

Table 4-77. PERSISTENT RESERVE IN Command — Field Descriptions . . . . . . . . . . . . . . . . 4-136

Table 4-78. Read Keys Parameters — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-138

Table 4-79. Read Reservations Parameters — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 4-139

Table 4-80. PERSISTENT RESERVE IN Read Reservations Descriptor — Field Descriptions. 4-140

Table 4-81. PERSISTENT RESERVATION IN Type Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-140

Table 4-82. PERSISTENT RESERVE OUT Command — Field Descriptions . . . . . . . . . . . . . . 4-143

Table 4-83. PERSISTENT RESERVE OUT Command’s Service Action Descriptions. . . . . . . . 4-144

Table 4-84. PERSISTENT RESERVE OUT Type Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-148

81-81200-02 REV A01 January 2005 xiii

List of Tables SDLT 600 SCSI Interface Guide

Table 4-85. PERSISTENT RESERVE OUT Parameter List — Field Descriptions . . . . . . . . . . . 4-150

Table 4-86. SDLT Tape Drive Interpretation of Service and Scope Value . . . . . . . . . . . . . . . . . . 4-151

Table 4-87. PREVENT / ALLOW MEDIUM REMOVAL Command Descriptor Block — Field

Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-152

Table 4-88. READ Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . . . . . . . . 4-153

Table 4-89. READ ATTRIBUTE Parameter Data — Field Descriptions . . . . . . . . . . . . . . . . . . . 4-156

Table 4-90. READ ATTRIBUTE Command Service Action Codes. . . . . . . . . . . . . . . . . . . . . . . 4-158

Table 4-91. READ ATTRIBUTE with ATTRIBUTE VALUES Service Action Parameter Data — Field

Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-159

Table 4-92. READ ATTRIBUTE with ATTRIBUTE LIST Service Action Parameter Data — Field

Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-160

Table 4-93. READ ATTRIBUTE with VOLUME LIST Service Action Parameter Data — Field

Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-161

Table 4-94. READ ATTRIBUTE with PARTITION LIST Service Action Parameter Data — Field

Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-162

Table 4-95. EMAM Attribute Parameter Data — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . 4-164

Table 4-96. EMAM Attribute Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-164

Table 4-97. EMAM Attribute Identifier Range Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-165

Table 4-98. Device Type Attributes (for EMAM) Supported by the SDLT Tape Drive

Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-165

Table 4-99. DEVICE VENDOR/SERIAL NUMBER Attribute Parameter Data — Field Descriptions 4-168

Table 4-100. MEDIUM USAGE HISTORY Attribute Parameter Data —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-170

Table 4-101. PARTITION USAGE HISTORY Attribute Parameter Data —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-173

Table 4-102. Medium Type Attributes (for EMAM) Supported by the SDLT Tape Drive Firmware 4175

Table 4-103. MEDIUM TYPE and MEDIUM TYPE INFORMATION Attributes . . . . . . . . . . . 4-177

Table 4-104. Host Type Attributes (for MAM) Supported by the SDLT Tape Drive Firmware. . 4-177

Table 4-105. TEXT LOCALIZATION IDENTIFIER — Attribute Values. . . . . . . . . . . . . . . . . . 4-178

Table 4-106. READ BLOCK LIMITS Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . 4-182

Table 4-107. READ BUFFER Command Descriptor Block — Field Descriptions . . . . . . . . . . . 4-184

Table 4-108. READ BUFFER Header — Field Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-186

Table 4-109. ECHO BUFFER Descriptor — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 4-188

Table 4-110. READ POSITION Command Descriptor Block — Field Descriptions. . . . . . . . . . 4-189

Table 4-111. READ POSITION (Short Form) Data — Field Descriptions . . . . . . . . . . . . . . . . . 4-190

Table 4-112. READ POSITION (Long Form) Data — Field Descriptions . . . . . . . . . . . . . . . . . 4-192

Table 4-113. RECEIVE DIAGNOSTIC RESULTS Command Data — Field Descriptions . . . . 4-194

Table 4-114. RELEASE (10) Command — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 4-197

Table 4-115. RELEASE UNIT Command — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . 4-198

xiv January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide List of Tables

Table 4-116. REPORT DENSITY SUPPORT Command — Field Descriptions . . . . . . . . . . . . . 4-199

Table 4-117. REPORT DENSITY SUPPORT Header — Field Descriptions. . . . . . . . . . . . . . . . 4-200

Table 4-118. REPORT DENSITY SUPPORT Data Block Descriptor —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-202

Table 4-119. REPORT DEVICE IDENTIFIER Command Descriptor Block — Field Descriptions. 4204

Table 4-120. REPORT DEVICE IDENTIFIER Parameter Data — Field Descriptions . . . . . . . . 4-205

Table 4-121. REPORT LUNS Command Descriptor Block — Field Descriptions . . . . . . . . . . . 4-206

Table 4-122. REPORT SUPPORTED OPERATION CODES Command Descriptor Block — Field

Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-209

Table 4-123. All_commands Parameter Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 4-210

Table 4-124. All_commands Command Descriptor — Field Descriptions. . . . . . . . . . . . . . . . . . 4-211

Table 4-125. One_command Parameter Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 4-213

Table 4-126. REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Command Descriptor

Block — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-215

Table 4-127. TASK MANAGEMENT FUNCTIONS Command Parameter Data — Field Descriptions 4-215

Table 4-128. REQUEST SENSE Command Data — Field Descriptions . . . . . . . . . . . . . . . . . . . 4-216

Table 4-129. REQUEST SENSE Data — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-218

Table 4-130. Supported Sense Keys for REQUEST SENSE Command . . . . . . . . . . . . . . . . . . . 4-220

Table 4-131. Supported ASC / ASCQ (Hex) for REQUEST SENSE Command . . . . . . . . . . . . . 4-221

Table 4-132. RESERVE (10) Command — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 4-229

Table 4-133. RESERVE UNIT Command Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . 4-230

Table 4-134. REWIND Command Data — Field Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-232

Table 4-135. SEND DIAGNOSTIC Command Data — Field Descriptions . . . . . . . . . . . . . . . . 4-233

Table 4-136. SEND DIAGNOSTIC CDB Fields — Selftst, DevOfl, and UnitOfl. . . . . . . . . . . . 4-235

Table 4-137. Sense Keys for SEND DIAGNOSTIC Command . . . . . . . . . . . . . . . . . . . . . . . . . . 4-235

Table 4-138. ASC / ASCQ for SEND DIAGNOSTIC Command . . . . . . . . . . . . . . . . . . . . . . . . 4-236

Table 4-139. SET DEVICE IDENTIFIER Command Descriptor Block — Field Descriptions. . 4-238

Table 4-140. SET DEVICE IDENTIFIER Parameter List — Field Description . . . . . . . . . . . . . 4-238

Table 4-141. SPACE Command Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-239

Table 4-142. VERIFY Command Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-242

Table 4-143. WRITE Command Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-244

Table 4-144. WRITE ATTRIBUTE Command Parameter Data — Field Descriptions . . . . . . . . 4-246

Table 4-145. WRITE ATTRIBUTE Command Parameter Data — Field Descriptions . . . . . . . . 4-247

Table 4-146. WRITE BUFFER Command Descriptor Block — Field Descriptions . . . . . . . . . . 4-250

Table 4-147. WRITE FILEMARKS Command — Field Descriptions. . . . . . . . . . . . . . . . . . . . . 4-252

81-81200-02 REV A01 January 2005 xv

List of Tables SDLT 600 SCSI Interface Guide

xvi January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide List of Figures

81-81200-02

REV A01

List of Figures

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2 SCSI Parallel Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3 SCSI Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Figure 3-1. Extended Message — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Figure 3-2. IDENTIFY Message — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Figure 3-3. IGNORE WIDE RESIDUE Message — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Figure 3-4. PARALLEL PROTOCOL REQUEST Message — Data Format . . . . . . . . . . . . . . . . 3-10

Figure 3-5. SYNCHRONOUS DATA TRANSFER REQUEST Message — Data Format . . . . . . 3-12

Figure 3-6. WIDE DATA TRANSFER REQUEST Message — Data Format. . . . . . . . . . . . . . . . 3-14

4 SCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Figure 4-1. ERASE Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Figure 4-2. INQUIRY Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . . 4-11

Figure 4-3. Standard Inquiry Data Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-4. Vendor Specific Inquiry Data Page — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17

Figure 4-5. Supported Vital Product Data Pages — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Figure 4-6. Unit Serial Number Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Figure 4-7. Device Identification Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

Figure 4-8. Vendor-unique Logical Unit Identifier— Data Format . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Figure 4-9. Logical Unit NAA Identifier — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

Figure 4-10. Firmware Build Information Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

Figure 4-11. Subsystem Components Revision Page — Data Format . . . . . . . . . . . . . . . . . . . . . . 4-26

Figure 4-12. LOAD UNLOAD Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . 4-28

Figure 4-13. LOCATE Command Descriptor Block — Data Format. . . . . . . . . . . . . . . . . . . . . . . 4-30

Figure 4-14. LOG SELECT Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . 4-31

81-81200-02 REV A01 January 2005 xvii

List of Figures SDLT 600 SCSI Interface Guide

Figure 4-15. LOG SELECT Log Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34

Figure 4-16. LOG SELECT Log Page — Parameters Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

Figure 4-17. LOG SENSE Command Descriptor Block — Data Format. . . . . . . . . . . . . . . . . . . . 4-39

Figure 4-18. Supported Pages LOG SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . 4-42

Figure 4-19. Read / Write Error LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . . 4-43

Figure 4-20. Log Parameters Format for Read / Write Error LOG SENSE Page . . . . . . . . . . . . . . 4-44

Figure 4-21. Last n Error Events LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . 4-47

Figure 4-22. Log Parameters Format for Last n Error Events LOG SENSE Page . . . . . . . . . . . . . 4-48

Figure 4-23. Sequential Access Device LOG SENSE Page — Header Format . . . . . . . . . . . . . . . 4-49

Figure 4-24. Log Parameters Format for Sequential Access Device LOG SENSE Page . . . . . . . . 4-49

Figure 4-25. Temperature LOG SENSE Page — Header Format. . . . . . . . . . . . . . . . . . . . . . . . . . 4-51

Figure 4-26. Log Parameters Format for Temperature Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51

Figure 4-27. TapeAlert LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-53

Figure 4-28. TapeAlert LOG SENSE Page — Parameters Format. . . . . . . . . . . . . . . . . . . . . . . . . 4-54

Figure 4-29. Read / Write Compression Ratio LOG SENSE Page — Header Format . . . . . . . . . . 4-57

Figure 4-30. Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page

(Parameter Codes 00h and 01h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-57

Figure 4-31. Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page

(Parameter Codes 02h through 09h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58

Figure 4-32. Device Wellness LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . . . 4-61

Figure 4-33. Log Parameters Format for Device Wellness LOG SENSE Page (Parameter Codes 0000h

– 000Fh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-62

Figure 4-34. Device Status LOG SENSE Page — Header Format. . . . . . . . . . . . . . . . . . . . . . . . . 4-64

Figure 4-35. Log Parameters Format for Device Status LOG SENSE Page. . . . . . . . . . . . . . . . . . 4-64

Figure 4-36. Cleaning-Related Log Parameters Format for Device Status LOG SENSE Page . . . 4-66

Figure 4-37. MODE SELECT (6) Command Descriptor Block — Data Format . . . . . . . . . . . . . . 4-68

Figure 4-38. MODE SELECT (10) Command Descriptor Block — Data Format . . . . . . . . . . . . . 4-68

Figure 4-39. MODE SELECT (6) Mode Parameter List — Data Format . . . . . . . . . . . . . . . . . . . 4-69

Figure 4-40. MODE SELECT (10) Mode Parameter List — Data Format . . . . . . . . . . . . . . . . . . 4-70

Figure 4-41. MODE SELECT (6) Mode Parameter Header — Data Format . . . . . . . . . . . . . . . . . 4-71

Figure 4-42. MODE SELECT (10) Mode Parameter Header — Data Format . . . . . . . . . . . . . . . . 4-71

Figure 4-43. MODE SELECT Mode Parameter Block Descriptor — Data Format. . . . . . . . . . . . 4-73

Figure 4-44. MODE SELECT Page Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75

Figure 4-45. Read / Write Error Recovery MODE SELECT Page — Data Format . . . . . . . . . . . . 4-76

Figure 4-46. Disconnect / Reconnect MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . 4-78

Figure 4-47. Control Mode MODE SELECT Page — Data Format. . . . . . . . . . . . . . . . . . . . . . . . 4-80

Figure 4-48. Data Compression MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . . . . 4-82

Figure 4-49. Device Configuration MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . 4-84

Figure 4-50. Medium Partition MODE SELECT Page — Data Format. . . . . . . . . . . . . . . . . . . . . 4-87

Figure 4-51. Logical Unit Control MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . . 4-89

xviii January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide List of Figures

Figure 4-52. Port Control MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 4-90

Figure 4-53. TapeAlert MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-92

Figure 4-54. Vendor Specific Configuration MODE SELECT Page — Data Format . . . . . . . . . . 4-95

Figure 4-55. Disaster Recovery Control MODE SELECT Page — Data Format . . . . . . . . . . . . . 4-97

Figure 4-56. EEPROM Vendor Specific MODE SELECT Page — Data Format . . . . . . . . . . . . . 4-98

Figure 4-57. EEPROM Vendor Specific Page “Vendor ID” Example — Data Format . . . . . . . . 4-104

Figure 4-58. MODE SENSE (6) Command Descriptor Block — Data Format . . . . . . . . . . . . . . 4-107

Figure 4-59. MODE SENSE (10) Command Descriptor Block — Data Format . . . . . . . . . . . . . 4-108

Figure 4-60. MODE SENSE (6) Data Header — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-109

Figure 4-61. MODE SENSE (10) Data Header — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . 4-110

Figure 4-62. MODE SENSE Block Descriptor — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . 4-111

Figure 4-63. MODE SENSE Page — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-113

Figure 4-64. Read / Write Error Recovery MODE SENSE Page — Data Format . . . . . . . . . . . . 4-114

Figure 4-65. Disconnect / Reconnect MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . 4-116

Figure 4-66. Control Mode MODE SENSE Page — Data Format. . . . . . . . . . . . . . . . . . . . . . . . 4-118

Figure 4-67. Data Compression MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . 4-120

Figure 4-68. Device Configuration MODE SENSE Page — Data Format. . . . . . . . . . . . . . . . . . 4-122

Figure 4-69. Medium Partition MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . . 4-125

Figure 4-70. Logical Unit Control MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . . 4-126

Figure 4-71. Port Control MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 4-127

Figure 4-72. TapeAlert MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-129

Figure 4-73. Vendor Specific Configuration Control MODE SENSE Page — Data Format . . . . 4-131

Figure 4-74. Disaster Recovery Control MODE SENSE Page — Data Format. . . . . . . . . . . . . . 4-133

Figure 4-75. EEPROM Vendor Specific MODE SENSE Page — Data Format. . . . . . . . . . . . . . 4-134

Figure 4-76. PERSISTENT RESERVE IN Command Descriptor Block — Data Format . . . . . . 4-135

Figure 4-77. PERSISTENT RESERVE IN Read Keys Parameters — Data Format . . . . . . . . . . 4-137

Figure 4-78. PERSISTENT RESERVE IN Read Reservations Parameters — Data Format . . . . 4-138

Figure 4-79. PERSISTENT RESERVE IN Read Reservations Descriptor — Data Format. . . . . 4-140

Figure 4-80. PERSISTENT RESERVE OUT Command Descriptor Block — Data Format . . . . 4-142

Figure 4-81. PERSISTENT RESERVE OUT Parameter List — Data Format . . . . . . . . . . . . . . . 4-149

Figure 4-82. PREVENT / ALLOW MEDIUM REMOVAL Command Descriptor Block — Data

Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-152

Figure 4-83. READ Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . . . 4-153

Figure 4-84. READ ATTRIBUTE Command Descriptor Block — Data Format. . . . . . . . . . . . . 4-156

Figure 4-85. READ ATTRIBUTE with ATTRIBUTE VALUES Service Action — Parameter List

Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-159

Figure 4-86. READ ATTRIBUTE with ATTRIBUTE LIST Service Action — Parameter List Format 4-160

Figure 4-87. READ ATTRIBUTE with VOLUME LIST Service Action — Parameter List Format 4161

81-81200-02 REV A01 January 2005 xix

List of Figures SDLT 600 SCSI Interface Guide

Figure 4-88. READ ATTRIBUTE with PARTITION LIST Service Action — Parameter List Format4162

Figure 4-89. EMAM Attribute — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-163

Figure 4-90. DEVICE VENDOR/SERIAL NUMBER Attribute — Data Format . . . . . . . . . . . . 4-167

Figure 4-91. MEDIUM USAGE HISTORY Attribute — Data Format . . . . . . . . . . . . . . . . . . . . 4-170

Figure 4-92. PARTITION USAGE HISTORY Attribute — Data Format . . . . . . . . . . . . . . . . . . 4-173

Figure 4-93. READ BLOCK LIMITS Command Descriptor Block — Data Format . . . . . . . . . 4-181

Figure 4-94. READ BLOCK LIMITS Data — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-181

Figure 4-95. READ BUFFER Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . 4-183

Figure 4-96. READ BUFFER Header — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-186

Figure 4-97. READ BUFFER Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-187

Figure 4-98. ECHO BUFFER Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-188

Figure 4-99. READ POSITION Command Descriptor Block — Data Format . . . . . . . . . . . . . . 4-189

Figure 4-100. READ POSITION (Short Form) — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 4-190

Figure 4-101. READ POSITION (Long Form) — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 4-192

Figure 4-102. RECEIVE DIAGNOSTIC RESULTS Command Descriptor Block — Data Format . 4194

Figure 4-103. RECEIVE DIAGNOSTIC RESULTS — Data Format . . . . . . . . . . . . . . . . . . . . . 4-195

Figure 4-104. RELEASE (10) Command Descriptor Block — Data Format. . . . . . . . . . . . . . . . 4-196

Figure 4-105. RELEASE (10) ID Only Parameter List — Data Format . . . . . . . . . . . . . . . . . . . 4-197

Figure 4-106. RELEASE UNIT Command Descriptor Block — Data Format . . . . . . . . . . . . . . 4-198

Figure 4-107. REPORT DENSITY SUPPORT Command Descriptor Block — Data Format. . . 4-199

Figure 4-108. REPORT DENSITY SUPPORT Header — Data Format . . . . . . . . . . . . . . . . . . . 4-200

Figure 4-109. REPORT DENSITY SUPPORT Data Block Descriptor — Data Format . . . . . . . 4-201

Figure 4-110. REPORT DEVICE IDENTIFIER Command Descriptor Block — Data Format. . 4-204

Figure 4-111. REPORT DEVICE IDENTIFIER — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . 4-205

Figure 4-112. REPORT LUNS Command Descriptor Block — Data Format . . . . . . . . . . . . . . . 4-206

Figure 4-113. LUN Reporting Parameter List — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-207

Figure 4-114. REPORT SUPPORTED OPERATION CODES Command Descriptor Block — Data

Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-208

Figure 4-115. All_commands Parameter Data — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 4-210

Figure 4-116. All_commands Command Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . 4-211

Figure 4-117. One_command Parameter Data — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 4-212

Figure 4-118. REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Command Descriptor

Block — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-214

Figure 4-119. TASK MANAGEMENT FUNCTIONS Command Parameter Data — Data Format . 4215

Figure 4-120. REQUEST SENSE Command Descriptor Block — Data Format. . . . . . . . . . . . . 4-216

Figure 4-121. REQUEST SENSE — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-217

Figure 4-122. RESERVE (10) Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . 4-228

Figure 4-123. RESERVE (10) ID Only Parameter List — Data Format. . . . . . . . . . . . . . . . . . . . 4-229

xx January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide List of Figures

Figure 4-124. REQUEST SENSE Command Descriptor Block — Data Format. . . . . . . . . . . . . 4-230

Figure 4-125. REWIND Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . 4-232

Figure 4-126. SEND DIAGNOSTIC Command Descriptor Block — Data Format . . . . . . . . . . 4-233

Figure 4-127. SET DEVICE IDENTIFIER Command Descriptor Block — Data Format . . . . . 4-237

Figure 4-128. SET DEVICE IDENTIFIER Parameter List — Data Format . . . . . . . . . . . . . . . . 4-238

Figure 4-129. SPACE Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . 4-239

Figure 4-130. TEST UNIT READY Command Descriptor Block — Data Format . . . . . . . . . . . 4-241

Figure 4-131. VERIFY Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . 4-242

Figure 4-132. WRITE Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . 4-243

Figure 4-133. WRITE ATTRIBUTE Command Descriptor Block — Data Format. . . . . . . . . . . 4-245

Figure 4-134. WRITE ATTRIBUTE — Parameter List Format . . . . . . . . . . . . . . . . . . . . . . . . . . 4-246

Figure 4-135. WRITE BUFFER Command Descriptor Block — Data Format . . . . . . . . . . . . . . 4-249

Figure 4-136. WRITE FILEMARKS Command Descriptor Block — Data Format . . . . . . . . . . 4-252

81-81200-02 REV A01 January 2005 xxi

List of Figures SDLT 600 SCSI Interface Guide

xxii January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide Introduction

81-81200-02 REV A01

1.1 Purpose and Scope

CHAPTER 1

Introduction

This reference guide is a comprehensive source of information about SCSI commands and SCSI messages used by the Super DLTtape™-generation (SDLT) tape drives. This document is written for original equipment manufacturers (OEMs) that are integrating the Quantum SDLT tape drive into a system or subsystem. Background knowledge of the SCSI-3, SAM, SPC, SPI, and SSC standards is assumed.

This document’s primary audience is the OEM technical system integrators who are responsible for the SCSI interface. In addition, technically astute end-users can use this manual for installation and operation of the tape drive, although that group is a secondary audience.

1.2 Referenced Documents

• Super DLTtape Interactive Library Interface Specification (6464162-01)

81-81200-02 REV A01 January 2005 1-1

Related Documents SDLT 600 SCSI Interface Guide

1.3 Related Documents

• SDLT 600 Fibre Channel Interface Guide (81-81202-02)

• SDLT 600 Product Manual (81-81184-01)

• Current standards documents available from www.t10.org:

 SCSI Architecture Model (SAM-2)

 SCSI Parallel Interface (SPI-3)

 SCSI Primary Commands (SPC-2)

 SCSI Stream Commands (SSC)

1.4 Structure of this Manual

• Chapter 1, Introduction, is the chapter you are currently reading.

• Chapter 2, SCSI Parallel Protocol, provides an overview of SDLT tape drive-specific SCSI

information. Background knowledge of the SCSI-3, SAM, SPC, SPI, and SSC standards is assumed.

• Chapter 3, SCSI Messages, lists and describes the SCSI messages supported by SDLT tape drives. The SCSI message system allows communication between SCSI initiators and SCSI targets (the SDLT tape drive, in this case) for interface management and command elaboration and qualification.

• Chapter 4, SCSI Commands, describes in detail each command supported by SDLT tape drives. The SCSI command system enables a SCSI initiator to direct an SDLT tape drive to perform a wide range of operational and diagnostic functions. This chapter also provides Sense Key and Additional Sense Code information for the REQUEST SENSE and SEND DIAGNOSTIC SCSI commands as well as density codes for the MODE SELECT and MODE SENSE commands.

1-2 January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide Chapter 1: Introduction

1.5 Conventions

This manual uses the following conventions to designate specific elements:

Table 1-1. Typographical Conventions

Element Convention Example

Commands Uppercase (unless case-

sensitive)

Messages Uppercase IDENTIFY

Hexadecimal Notation Number followed by

lowercase h

Binary Notation Number followed by

lowercase b

Decimal Notation Number without suffix 512

Acronyms Uppercase POST

Abbreviations Lowercase, except where

standard usage requires uppercase

1.6 For More Information

The web site http://www.dlttape.com includes information about the various DLTtape systems available for purchase. To locate specific product-related support information or to register your tape drive, visit http://www.quantum.com/AM/support/. Once you are registered, you can download a variety of useful drivers, software programs, and diagnostic utilities.

TEST UNIT READY

25h

101b

Mb (megabits) MB (megabytes)

For personalized information about Quantum’s reliable data protection products, call 1-800-624-5545 in the U.S.A. and Canada.

81-81200-02 REV A01 January 2005 1-3

Reader Comments SDLT 600 SCSI Interface Guide

1.7 Reader Comments

Quantum is committed to providing the best products and service. We encourage your comments, suggestions, and corrections for this manual. Please send all comments on existing documentation to:

Quantum Technical Publications 4001 Discovery Dr. Suite 1100 Boulder, Colorado USA 80303

or if you prefer, e-mail your comments to:

doc-comments@quantum.com

1-4 January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide SCSI Parallel Protocol

This chapter covers the following topics:

• “Background Information About SCSI” describes the knowledge required to use this manual

• “Information Transfer Phases” describes the specifics of information transfer in SDLT tape drives.

81-81200-02 REV A01

CHAPTER 2

SCSI Parallel Protocol

successfully.

• “SCSI Bus Conditions” describes the two asynchronous conditions of the SCSI bus.

2.1 Background Information About SCSI

Small Computer System Interface (SCSI) is one of the industry’s most widely adopted I/O interfaces; it is widely used in computing platforms from personal computers to mainframes to peripheral devices of all types. SDLT tape drives conform to the SPI-3 standard. You should familiarize yourself with the SCSI-3, SAM-2, SPC-2, SPI-3, and SSC standards before using the remaining portions of this manual.

Important features of SPI-3 implementation include the following:

• Efficient peer-to-peer I/O bus for up to 15 devices

• Asynchronous transfer rates that depend only on device implementation and cable length

• Logical addressing (rather than physical addressing) for all data blocks

• Multiple initiators and multiple targets

• Distributed arbitration (bus contention logic)

• Command set enhancement.

NOTE: Complete SCSI standards documents are available at www.t10.org.

81-81200-02 REV A01 January 2005 2-1

Information Transfer Phases SDLT 600 SCSI Interface Guide

2.2 Information Transfer Phases

The COMMAND, DATA, STATUS, and MESSAGE phases are known as the information transfer phases because they are used to transfer data or control information. Keep the following guidelines in

mind:

• SDLT tape drives support wide asynchronous and synchronous data transfers.

• Odd parity is generated during all information transfer phases during which the device writes data

to the SCSI bus and parity is checked during all transfer phases in which data is read from the bus by the SDLT tape drive.

• SDLT tape drives support block sizes from 4 bytes to 16,777,212 bytes.

• The tape drive disconnects from the SCSI bus at regular intervals during information transfer

phases to allow other devices to access the bus. These disconnects are user-configurable using the Disconnect-Reconnect Page of the MODE SELECT command.

• The SDLT tape drive does not act as an initiator on the SCSI bus. Therefore, the drive does not:

1) generate unsolicited interrupts to the bus, 2) initiate its own SCSI commands, or 3) assert bus reset.

• The SDLT 600 SCSI drive supports both LVD and single-ended bus configurations.

2.3 SCSI Bus Conditions

The SCSI bus has two asynchronous conditions:

• Attention Condition

• Reset Condition

2.3.1 Attention Condition

The Attention Condition informs an SDLT tape drive that an initiator has a message ready. The drive gets the message by performing a MESSAGE OUT phase. The Attention Condition requires the following timing:

• The initiator creates the Attention Condition by asserting ATN at any time except during the ARBITRATION or BUS FREE phases.

• The initiator negates the ATN signal at least two deskew delays before asserting the ACK signal while transferring the last byte of the message.

2-2 January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide Chapter 2: SCSI Parallel Protocol

• If an initiator wishes to send a message before transitioning to a new bus phase, the initiator asserts the ATN signal, then waits at least two deskew delays before negating the ACK signal for the last byte transferred in the current bus phase. Asserting the ATN signal later may not be honored until a later bus phase which may result in an unexpected action.

The SDLT tape drive responds with a MESSAGE OUT phase, as described in the following table:

Table 2-1. Drive’s MESSAGE OUT Phase Response

ATN Signal True in Phase... The Drive Enters MESSAGE OUT…

COMMAND After transferring part or all of the command descriptor block

bytes.

DATA At the drive’s earliest convenience (often on a logical block

boundary). The initiator continues REQ/ACK handshakes until it detects the phase change.

STATUS After the initiator has acknowledged the status byte.

MESSAGE IN Before it sends another message. This permits a MESSAGE

PARITY ERROR message from the initiator to be associated with the appropriate message.

SELECTION

RESELECTION

1. Before the initiator releases BSY, provided the initiator asserted ATN.

2. The initiator should only assert the ATN signal during a RESELECTION phase to transmit a TARGET RESET or DISCONNECT message.

Immediately after that SELECTION phase.

After the drive has sent its IDENTIFY message for that RESELECTION phase.

The initiator keeps the ATN signal asserted if more than one byte is to be transferred. The initiator may negate the ATN signal at any time, except that it should not negate ATN while the ACK signal is asserted during a MESSAGE OUT phase.

NOTE: Normally, the initiator negates the ATN signal while the REQ signal is

true and the ACK signal is false during the last REQ/ACK handshake of

the MESSAGE OUT phase.

81-81200-02 REV A01 January 2005 2-3

SCSI Bus Conditions SDLT 600 SCSI Interface Guide

2.3.2 Reset Condition

The SDLT tape drive responds to bus reset conditions as follows:

• Within 250 milliseconds—and typically under 4 milliseconds—after a bus reset, the drive responds to SCSI bus selections and returns the appropriate normal responses. Tape motion commands are returned with Check Condition status, Sense Key of Not Ready, until the drive makes the medium ready.

• The drive rewinds the tape medium to Beginning of Partition (BOP, which is Beginning of Tape [BOT]).

NOTE: The SDLT tape drive does not implement the hard reset alternative for bus

RESET processing.

The SDLT tape drive recognizes multiple bus resets in succession as well as bus resets of arbitrarily long duration (power-on conditions). It recovers within the time limits specified above following the last bus reset.

2-4 January 2005 81-81200-02 REV A01

SDLT 600 SCSI Interface Guide SCSI Messages

This chapter provides a detailed description of the SCSI messages SDLT tape drives support. Specifically, it covers the following topics:

• “Message Format” lists the specific format of SCSI messages.

• “Supported SCSI Messages” contains descriptions of each of the messages supported by the drive.

81-81200-02 REV A01

CHAPTER 3

SCSI Messages

3.1 Message Format

A message can be one or more bytes in length. One or more messages can be sent during a single MESSAGE phase, but a message cannot be split across multiple MESSAGE phases. The initiator is required to end the MESSAGE OUT phase (by negating ATN) when it sends certain messages that are identified in Table 3-3 .

When a connection to the SDLT tape drive is established (that is, the drive is selected with ATN asserted), the first message byte passed by the initiator must be either an IDENTIFY, ABORT TASK SET, or TARGET RESET message. If not, the drive discards the message, saves no status information, and enters the BUS FREE phase.

If an initiator supplies an unsupported message (for example, TASK COMPLETE or a reserved or undefined message code), the drive returns a MESSAGE REJECT message and continues where it left off (possibly returning to MESSAGE OUT if ATN is raised).

81-81200-02 REV A01 January 2005 3-1

Message Format SDLT 600 SCSI Interface Guide

The first byte of the message, as defined in Table 3-1, determines the format of the message.

Table 3-1. SCSI Message Format

Message Code Message

00h One-byte message (TASK COMPLETE)

01h Extended message

02h – 1Fh One-byte message

20h – 2Fh Two-byte message

30h – 54h Reserved

55h One-byte message

56h – 7Fh Reserved

80h – FFh One-byte message (IDENTIFY)

Two-byte messages consist of two consecutive bytes. The value of the first byte, as defined in

Table 3-1, determines which message will be transmitted. The second byte is a parameter byte that is

used as defined in the message description.

A value of 1 in the first byte indicates the beginning of a multiple-byte extended message. The minimum number of bytes sent for an extended message is three. The extended message format is shown in Figure 3-1, and the data fields are described in Table 3-2.

Bit

Byte

0 Extended Message (01h)

1 Extended Message Length

3 to n-1 Extended Message Arguments

7 6 5 4 3 2 1 0

Extended Message Code

Figure 3-1. Extended Message — Data Format

3-2 January 2005 81-81200-02 REV A01

+ 264 hidden pages