Quantum 818120201 User Manual

SDLT 600 Fibre Channel Interface Guide

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SDLT 600 Fibre Channel Interface Guide

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SDLT 600 Fibre Channel Interface Guide

Revision History

All revisions made to this document are listed below in chronological order.

Document Release Date Summary of Changes

A01 October 10,

2003

A02 July 9, 2004 Maintenance release. All functions and features of the V25

Initial release.

firmware release are described.

iii

SDLT 600 Fibre Channel Interface Guide

SDLT 600 Fibre Channel Interface Guide SCSI Commands

81-81202-01 REV A02

Ta ble of Contents

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 Fibre Channel Protocol and SCSI . . . . . . . . . . . . . . . . . . . . . . . 2-1

Background Information About Fibre Channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Fibre Channel Interface Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Relationship Between Fibre Channel and SCSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

World-wide Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Implementation Details for SDLT 600 Tape Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Task Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Persistent Reservations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Link Service and Unsolicited Control Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Basic Link Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Extended Link Service Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Extended Link Service Loop Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

FC-4 Link Service Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Unsolicited Control / Name Server Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

3 SCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Overview of SCSI Command and Status Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Unit Attention Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

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Table of Contents SDLT 600 Fibre Channel Interface Guide

Behavior at Power-On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Data Cache and Tape Write Interaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

SCSI Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

ERASE Command (19h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

INQUIRY Command (12h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Standard Inquiry Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Vendor Specific Inquiry Data Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Vital Product Data Pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Supported Vital Product Data Page (00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Unit Serial Number Page (80h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Device Identification Page (83h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Firmware Build Information Page (C0h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Subsystem Components Revision Page (C1h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24

LOAD UNLOAD Command (1Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26

LOCATE Command (2Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28

LOG SELECT Command (4Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

Overview: LOG SELECT Command Descriptor Block Errors . . . . . . . . . . . . . . . . . . . . . . . . 3-31

Operation of LOG SELECT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

LOG SELECT Log Page Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

Error Detection Summary in LOG SELECT Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-36

LOG SENSE Command (4Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37

Error Summary in LOG SENSE Command Descriptor Block . . . . . . . . . . . . . . . . . . . . . . . . . 3-39

Supported Pages Log Page (Page 00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40

Read (Page 03h) / Write (Page 02h) Error Log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41

LAST n ERROR EVENTS Log Page (07h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45

Sequential Access Device Log Page (0Ch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47

Temperature Log Page (0Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49

TapeAlert Log Page (2Eh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51

Read / Write Compression Log Page (32h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55

Device Wellness Log Page (33h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-59

Device Status Log Page (3Eh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62

MODE SELECT (6) / (10) Command (15h / 55h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-65

Mode Parameter List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-67

Mode Parameter Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-69

Mode Parameter Block Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71

Mode Page Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-73

Read / Write Error Recovery Page (01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-74

Disconnect / Reconnect Page (02h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-76

Control Mode Page (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-78

Data Compression Page (0Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-80

vi July 2004 81-81202-01 REV A02

SDLT 600 Fibre Channel Interface Guide Table of Contents

Device Configuration Page (10h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-82

Medium Partition Page (11h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-85

Fibre Channel Logical Unit Control Page (18h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-87

Fibre Channel Port Control Page (19h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-88

TapeAlert Page (1Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-90

Vendor Specific Configuration Page (25h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-93

Disaster Recovery Control Page (3Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-95

EEPROM Vendor Specific Page (3Eh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-96

Changeable Parameters Within MODE SELECT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-103

MODE SENSE (6) / (10) Command (1Ah / 5Ah). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-105

MODE SENSE Data Headers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-107

MODE SENSE Block Descriptor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-109

MODE SENSE Mode Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-111

Read / Write Error Recovery Page (01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-112

Disconnect / Reconnect Page (02h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-114

Control Mode Page (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-116

Data Compression Page (0Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-118

Device Configuration Page (10h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-120

Medium Partition Page (11h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-123

Fibre Channel Logical Unit Control Page (18h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-124

Fibre Channel Port Control Page (19h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-125

TapeAlert Page (1Ch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-127

Vendor Specific Configuration Control Page (25h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-129

Disaster Recovery Control Page (3Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-131

EEPROM Vendor Specific Page (3Eh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-132

PERSISTENT RESERVE IN Command (5Eh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-133

PERSISTENT RESERVE OUT Command (5Fh). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-140

PREVENT / ALLOW MEDIUM REMOVAL Command (1Eh) . . . . . . . . . . . . . . . . . . . . . . . . . 3-150

READ Command (08h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-151

Filemark and End-of-Data Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-152

End-of-Medium/Partition Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-153

READ ATTRIBUTE Command (8Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-154

Error Summary for the READ ATTRIBUTE Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-155

READ ATTRIBUTE Service Action Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-156

ATTRIBUTE VALUES Service Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-157

ATTRIBUTE LIST Service Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-158

VOLUME LIST Service Action. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-159

PARTITION LIST Service Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-160

Enhanced Medium Auxiliary Memory (EMAM) Attributes . . . . . . . . . . . . . . . . . . . . . . . . . 3-161

Attribute Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-161

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Table of Contents SDLT 600 Fibre Channel Interface Guide

Attribute Identifier Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-163

Unique Features of the SDLT Tape Drive Implementation of Read / Write Attributes . . . . . 3-177

A Comparison of MAM and EMAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-177

READ BLOCK LIMITS Command (05h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-179

READ BUFFER Command (3Ch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-181

Retrieving Diagnostic Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-183

Read Data from the Saved Buffer (A1h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-183

Read Data from the Live Buffer (A2h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-183

Compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-184

Combined Header and Data Mode (00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-184

Data Mode (02h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-185

Descriptor Mode (03h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-185

Read Data from Echo Buffer (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-185

Echo Buffer Descriptor Mode (0Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-186

READ POSITION Command (34h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-187

Read Position Data — Short Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-188

Read Position Data — Long Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-190

RECEIVE DIAGNOSTIC RESULTS Command (1Ch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-192

REPORT DENSITY SUPPORT Command (44h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-194

REPORT DEVICE IDENTIFIER Command (A3h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-199

REPORT LUNS Command (A0h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-201

REPORT SUPPORTED OPERATION CODES Command (A3h) . . . . . . . . . . . . . . . . . . . . . . . . 3-203

All_commands Parameter Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-205

One_command Parameter Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-207

REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Command (A3h) . . . . . . . . . . 3-209

REQUEST SENSE Command (03h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-211

REWIND Command (01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-223

SEND DIAGNOSTIC Command (1Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-224

Level 1 Test: Electronics Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-225

Level 2 Test: Write / Read Functionality Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-225

SET DEVICE IDENTIFIER Command (A4h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-228

SPACE Command (11h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-230

TEST UNIT READY Command (00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-232

VERIFY Command (13h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-233

WRITE Command (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-234

WRITE ATTRIBUTE Command (8Dh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-236

Error Summary for the WRITE ATTRIBUTE Command . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-238

WRITE BUFFER Command (3Bh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-240

Write Combined Header and Data Mode (00h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-241

Write Data Mode (02h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-241

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Table of Contents SDLT 600 Fibre Channel Interface Guide

Download Microcode Mode (04h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-242

Download Microcode and Save Mode (05h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-242

Write Data to Echo Buffer Mode (0Ah) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-242

WRITE FILEMARKS Command (10h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-243

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81-81202-01 REV A02

List of Tables

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

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

2 Fibre Channel Protocol and SCSI . . . . . . . . . . . . . . . . . . . . . . . 2-1

Table 2-1. Supported Task Management Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Table 2-2. Supported Basic Link Service Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Table 2-3. Supported Extended Link Service Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Table 2-4. Supported Extended Link Service Loop Initialization Commands. . . . . . . . . . . . . . . . . 2-7

Table 2-5. Supported FC-4 Link Service Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Table 2-6. Supported Name Server Requests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

3 SCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Table 3-1. SCSI Commands Supported by SDLT Tape Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Table 3-2. Fields Common to Many SCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Table 3-3. ERASE Command Descriptor Block — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . 3-7

Table 3-4. INQUIRY Command Descriptor Block — Field Descriptions. . . . . . . . . . . . . . . . . . . . 3-9

Table 3-5. Standard Inquiry Data Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Table 3-6. Vendor Specific Inquiry Data Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 3-15

Table 3-7. Unit Serial Number Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Table 3-8. Device Identification Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Table 3-9. Vendor-unique Logical Unit Identifier — Field Descriptions. . . . . . . . . . . . . . . . . . . . 3-19

Table 3-10. Logical Unit NAA Identifier — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Table 3-11. Port NAA Identifier — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Table 3-12. Firmware Build Information Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 3-23

Table 3-13. Subsystem Components Revision Page — Field Descriptions. . . . . . . . . . . . . . . . . . 3-25

Table 3-14. LOAD UNLOAD Command Descriptor Block — Field Descriptions . . . . . . . . . . . 3-26

Table 3-15. LOCATE Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . . . . . . 3-28

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List of Tables SDLT 600 Fibre Channel Interface Guide

Table 3-16. LOG SELECT Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . . 3-30

Table 3-17. LOG SELECT Page-clearing Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

Table 3-18. LOG SELECT Log Page Header — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . 3-32

Table 3-19. LOG SELECT Log Parameters — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 3-33

Table 3-20. LOG SENSE Command Descriptor Block — Field Descriptions . . . . . . . . . . . . . . . 3-38

Table 3-21. Read / Write Error LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . 3-41

Table 3-22. Log Parameters for Read / Write Error LOG SENSE Page —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-42

Table 3-23. Last n Error Events LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . 3-46

Table 3-24. Log Parameters for Last n Error Events LOG SENSE Page — Field Descriptions . . 3-46

Table 3-25. Sequential Access Device LOG SENSE Header — Field Descriptions. . . . . . . . . . . 3-47

Table 3-26. Sequential Access Device LOG SENSE Page Parameters — Field Descriptions . . . 3-48

Table 3-27. Temperature LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . . . . . 3-49

Table 3-28. Temperature LOG SENSE Parameters — Field Descriptions . . . . . . . . . . . . . . . . . . 3-50

Table 3-29. TapeAlert Page LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . . . 3-51

Table 3-30. TapeAlert Page LOG SENSE Parameters — Field Descriptions . . . . . . . . . . . . . . . . 3-52

Table 3-31. TapeAlert Flags, Severity Levels, and Meanings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53

Table 3-32. Read / Write Compression Ratio LOG SENSE Header — Field Descriptions. . . . . . 3-55

Table 3-33. Log Parameters for Read / Write Compression Ratio LOG SENSE Page —

Field Descriptions (Parameter Codes 00h and 01h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-56

Table 3-34. Log Parameters for Read / Write Compression Ratio LOG SENSE Page —

Field Descriptions (Parameter Codes 02h through 09h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-57

Table 3-35. Device Wellness LOG SENSE Header — Field Descriptions . . . . . . . . . . . . . . . . . . 3-59

Table 3-36. Log Parameters for Device Wellness LOG SENSE Page — Field Descriptions . . . . 3-61

Table 3-37. Device Status LOG SENSE Header — Field Descriptions. . . . . . . . . . . . . . . . . . . . . 3-62

Table 3-38. Log Parameters for Device Status LOG SENSE Page — Field Descriptions . . . . . . 3-63

Table 3-39. Log Parameters for Device Status LOG SENSE Parameter 0001h

(Cleaning-Related) — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-64

Table 3-40. MODE SELECT (6)/(10) Command Descriptor Block — Field Descriptions. . . . . . 3-67

Table 3-41. MODE SELECT Mode Parameter List — Field Descriptions . . . . . . . . . . . . . . . . . . 3-68

Table 3-42. MODE SELECT Mode Parameter Header — Field Descriptions . . . . . . . . . . . . . . . 3-70

Table 3-43. MODE SELECT Mode Parameter Block Descriptor — Field Descriptions . . . . . . . 3-72

Table 3-44. MODE SELECT Page Descriptor — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 3-73

Table 3-45. Read / Write Error Recovery MODE SELECT Page — Field Descriptions . . . . . . . 3-75

Table 3-46. Disconnect / Reconnect MODE SELECT Page — Field Descriptions . . . . . . . . . . . 3-77

Table 3-47. Control Mode MODE SELECT Page — Field Descriptions . . . . . . . . . . . . . . . . . . . 3-78

Table 3-48. Data Compression MODE SELECT Page — Field Descriptions. . . . . . . . . . . . . . . . 3-81

Table 3-49. Device Configuration MODE SELECT Page — Field Descriptions . . . . . . . . . . . . . 3-83

Table 3-50. Medium Partition MODE SELECT Page — Field Descriptions . . . . . . . . . . . . . . . . 3-85

Table 3-51. Fibre Channel Logical Unit Control MODE SELECT Page —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-87

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Table 3-52. Fibre Channel Port Control MODE SELECT Page — Field Descriptions. . . . . . . . . 3-88

Table 3-53. TapeAlert MODE SELECT Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 3-90

Table 3-54. Vendor Specific Configuration MODE SELECT Page — Field Descriptions . . . . . . 3-94

Table 3-55. Disaster Recovery Control MODE SELECT Page — Field Descriptions . . . . . . . . . 3-95

Table 3-56. EEPROM Vendor Specific MODE SELECT Page — Parameter Descriptions . . . . . 3-96

Table 3-57. Changeable Mode Parameters Within MODE SELECT. . . . . . . . . . . . . . . . . . . . . . 3-103

Table 3-58. MODE SENSE Command Descriptor Block — Field Descriptions . . . . . . . . . . . . 3-106

Table 3-59. MODE SENSE Data Header — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 3-108

Table 3-60. MODE SENSE Block Descriptor — Field Descriptions . . . . . . . . . . . . . . . . . . . . . 3-110

Table 3-61. MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-111

Table 3-62. Supported MODE SENSE Block Pages and Page Codes . . . . . . . . . . . . . . . . . . . . . 3-111

Table 3-63. Read / Write Error Recovery MODE SENSE Page — Field Descriptions. . . . . . . . 3-113

Table 3-64. Disconnect / Reconnect MODE SENSE Page — Field Descriptions. . . . . . . . . . . . 3-115

Table 3-65. Control Mode MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . . . . 3-116

Table 3-66. Data Compression MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . 3-118

Table 3-67. Device Configuration MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . 3-121

Table 3-68. Medium Partition MODE SENSE Page — Field Descriptions . . . . . . . . . . . . . . . . 3-123

Table 3-69. Fibre Channel Logical Unit Control MODE SENSE Page —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-125

Table 3-70. Fibre Channel Port Control MODE SENSE Page — Field Descriptions . . . . . . . . . 3-126

Table 3-71. TapeAlert MODE SENSE Page — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . 3-127

Table 3-72. Vendor Specific Configuration Control MODE SENSE Page — Field Descriptions3-129

Table 3-73. Disaster Recovery Control MODE SENSE Page — Field Descriptions . . . . . . . . . 3-131

Table 3-74. EEPROM Vendor Specific MODE SENSE Page — Field Descriptions . . . . . . . . . 3-132

Table 3-75. PERSISTENT RESERVE IN Command — Field Descriptions. . . . . . . . . . . . . . . . 3-134

Table 3-76. Read Keys Parameters — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-136

Table 3-77. Read Reservations Parameters — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . 3-137

Table 3-78. PERSISTENT RESERVE IN Read Reservations Descriptor — Field Descriptions 3-138

Table 3-79. PERSISTENT RESERVATION IN Type Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-138

Table 3-80. PERSISTENT RESERVE OUT Command — Field Descriptions . . . . . . . . . . . . . . 3-141

Table 3-81. PERSISTENT RESERVE OUT Command’s Service Action Descriptions . . . . . . . 3-142

Table 3-82. PERSISTENT RESERVE OUT Type Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-146

Table 3-83. PERSISTENT RESERVE OUT Parameter List — Field Descriptions . . . . . . . . . . 3-148

Table 3-84. SDLT Tape Drive Interpretation of Service and Scope Value. . . . . . . . . . . . . . . . . . 3-149

Table 3-85. PREVENT / ALLOW MEDIUM REMOVAL Command Descriptor Block —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-150

Table 3-86. READ Command Descriptor Block — Field Descriptions. . . . . . . . . . . . . . . . . . . . 3-151

Table 3-87. READ ATTRIBUTE Parameter Data — Field Descriptions . . . . . . . . . . . . . . . . . . 3-154

Table 3-88. READ ATTRIBUTE Command Service Action Codes . . . . . . . . . . . . . . . . . . . . . . 3-156

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List of Tables SDLT 600 Fibre Channel Interface Guide

Table 3-89. READ ATTRIBUTE with ATTRIBUTE VALUES Service Action Parameter

Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-157

Table 3-90. READ ATTRIBUTE with ATTRIBUTE LIST Service Action Parameter Data —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-158

Table 3-91. READ ATTRIBUTE with VOLUME LIST Service Action Parameter Data —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-159

Table 3-92. READ ATTRIBUTE with PARTITION LIST Service Action Parameter Data —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-160

Table 3-93. EMAM Attribute Parameter Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . 3-162

Table 3-94. EMAM Attribute Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-162

Table 3-95. EMAM Attribute Identifier Range Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-163

Table 3-96. Device Type Attributes (for EMAM) Supported by the SDLT Tape

Drive Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-163

Table 3-97. DEVICE VENDOR/SERIAL NUMBER Attribute Parameter Data —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-166

Table 3-98. MEDIUM USAGE HISTORY Attribute Parameter Data —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-168

Table 3-99. PARTITION USAGE HISTORY Attribute Parameter Data —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-171

Table 3-100. Medium Type Attributes (for EMAM) Supported by the SDLT Tape

Drive Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-173

Table 3-101. MEDIUM TYPE and MEDIUM TYPE INFORMATION Attributes . . . . . . . . . . 3-175

Table 3-102. Host Type Attributes (for MAM) Supported by the SDLT Tape

Drive Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-175

Table 3-103. TEXT LOCALIZATION IDENTIFIER — Attribute Values . . . . . . . . . . . . . . . . . 3-176

Table 3-104. READ BLOCK LIMITS Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . 3-180

Table 3-105. READ BUFFER Command Descriptor Block — Field Descriptions . . . . . . . . . . 3-182

Table 3-106. READ BUFFER Header — Field Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-184

Table 3-107. ECHO BUFFER Descriptor — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . 3-186

Table 3-108. READ POSITION Command Descriptor Block — Field Descriptions . . . . . . . . . 3-187

Table 3-109. READ POSITION (Short Form) Data — Field Descriptions. . . . . . . . . . . . . . . . . 3-188

Table 3-110. READ POSITION (Long Form) Data — Field Descriptions . . . . . . . . . . . . . . . . . 3-190

Table 3-111. RECEIVE DIAGNOSTIC RESULTS Command Data — Field Descriptions . . . . 3-192

Table 3-112. REPORT DENSITY SUPPORT Command — Field Descriptions. . . . . . . . . . . . . 3-194

Table 3-113. REPORT DENSITY SUPPORT Header — Field Descriptions . . . . . . . . . . . . . . . 3-195

Table 3-114. REPORT DENSITY SUPPORT Data Block Descriptor —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-197

Table 3-115. REPORT DEVICE IDENTIFIER Command Descriptor Block —

Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-199

Table 3-116. REPORT DEVICE IDENTIFIER Parameter Data — Field Descriptions . . . . . . . 3-200

Table 3-117. REPORT LUNS Command Descriptor Block — Field Descriptions . . . . . . . . . . . 3-201

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SDLT 600 Fibre Channel Interface Guide List of Tables

Table 3-118. REPORT SUPPORTED OPERATION CODES Command Descriptor

Block — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-204

Table 3-119. All_commands Parameter Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 3-205

Table 3-120. All_commands Command Descriptor — Field Descriptions . . . . . . . . . . . . . . . . . 3-206

Table 3-121. One_command Parameter Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . 3-208

Table 3-122. REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Command

Descriptor Block — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-210

Table 3-123. TASK MANAGEMENT FUNCTIONS Command Parameter Data — Field

Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-210

Table 3-124. REQUEST SENSE Command Data — Field Descriptions . . . . . . . . . . . . . . . . . . 3-211

Table 3-125. REQUEST SENSE Data — Field Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-213

Table 3-126. Supported Sense Keys for REQUEST SENSE Command . . . . . . . . . . . . . . . . . . . 3-215

Table 3-127. Supported ASC / ASCQ (Hex) for REQUEST SENSE Command . . . . . . . . . . . . 3-216

Table 3-128. REWIND Command Data — Field Description. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-223

Table 3-129. SEND DIAGNOSTIC Command Data — Field Descriptions . . . . . . . . . . . . . . . . 3-224

Table 3-130. SEND DIAGNOSTIC CDB Fields — DHC, Selftst, DevOfl, and UnitOfl. . . . . . 3-226

Table 3-131. Sense Keys for SEND DIAGNOSTIC Command . . . . . . . . . . . . . . . . . . . . . . . . . 3-226

Table 3-132. ASC / ASCQ for SEND DIAGNOSTIC Command . . . . . . . . . . . . . . . . . . . . . . . . 3-227

Table 3-133. SET DEVICE IDENTIFIER Command Descriptor Block — Field

Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-229

Table 3-134. SET DEVICE IDENTIFIER Parameter List — Field Description. . . . . . . . . . . . . 3-229

Table 3-135. SPACE Command Data — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-230

Table 3-136. VERIFY Command Data — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-233

Table 3-137. WRITE Command Data — Field Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-235

Table 3-138. WRITE ATTRIBUTE Command Parameter Data — Field Descriptions. . . . . . . . 3-237

Table 3-139. WRITE ATTRIBUTE Command Parameter Data — Field Descriptions. . . . . . . . 3-238

Table 3-140. WRITE BUFFER Command Descriptor Block — Field Descriptions. . . . . . . . . . 3-241

Table 3-141. WRITE FILEMARKS Command — Field Descriptions . . . . . . . . . . . . . . . . . . . . 3-243

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List of Tables SDLT 600 Fibre Channel Interface Guide

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81-81202-01 REV A02

List of Figures

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

2 Fibre Channel Protocol and SCSI . . . . . . . . . . . . . . . . . . . . . . . 2-1

3 SCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Figure 3-1. ERASE Command Descriptor Block — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Figure 3-2. INQUIRY Command Descriptor Block — Data Format. . . . . . . . . . . . . . . . . . . . . . . . 3-8

Figure 3-3. Standard Inquiry Data Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Figure 3-4. Vendor Specific Inquiry Data Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

Figure 3-5. Supported Vital Product Data Pages — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Figure 3-6. Unit Serial Number Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Figure 3-7. Device Identification Page — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Figure 3-8. Vendor-unique Logical Unit Identifier— Data Format . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Figure 3-9. Logical Unit NAA Identifier — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21

Figure 3-10. Port NAA Identifier — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Figure 3-11. Firmware Build Information Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Figure 3-12. Subsystem Components Revision Page — Data Format. . . . . . . . . . . . . . . . . . . . . . 3-24

Figure 3-13. LOAD UNLOAD Command Descriptor Block — Data Format . . . . . . . . . . . . . . . 3-26

Figure 3-14. LOCATE Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . 3-28

Figure 3-15. LOG SELECT Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . 3-29

Figure 3-16. LOG SELECT Log Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32

Figure 3-17. LOG SELECT Log Page — Parameters Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33

Figure 3-18. LOG SENSE Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . 3-37

Figure 3-19. Supported Pages LOG SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . 3-40

Figure 3-20. Read / Write Error LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . 3-41

Figure 3-21. Log Parameters Format for Read / Write Error LOG SENSE Page . . . . . . . . . . . . . 3-42

Figure 3-22. Last n Error Events LOG SENSE Page — Header Format. . . . . . . . . . . . . . . . . . . . 3-45

Figure 3-23. Log Parameters Format for Last n Error Events LOG SENSE Page. . . . . . . . . . . . . 3-46

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List of Figures SDLT 600 Fibre Channel Interface Guide

Figure 3-24. Sequential Access Device LOG SENSE Page — Header Format. . . . . . . . . . . . . . . 3-47

Figure 3-25. Log Parameters Format for Sequential Access Device LOG SENSE Page . . . . . . . 3-47

Figure 3-26. Temperature LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . . . . . . 3-49

Figure 3-27. Log Parameters Format for Temperature Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49

Figure 3-28. TapeAlert LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-51

Figure 3-29. TapeAlert LOG SENSE Page — Parameters Format . . . . . . . . . . . . . . . . . . . . . . . . 3-52

Figure 3-30. Read / Write Compression Ratio LOG SENSE Page — Header Format . . . . . . . . . 3-55

Figure 3-31. Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page

(Parameter Codes 00h and 01h). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55

Figure 3-32. Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page

(Parameter Codes 02h through 09h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-56

Figure 3-33. Device Wellness LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . . . 3-59

Figure 3-34. Log Parameters Format for Device Wellness LOG SENSE Page

(Parameter Codes 0000h – 000Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-60

Figure 3-35. Device Status LOG SENSE Page — Header Format . . . . . . . . . . . . . . . . . . . . . . . . 3-62

Figure 3-36. Log Parameters Format for Device Status LOG SENSE Page . . . . . . . . . . . . . . . . . 3-62

Figure 3-37. Cleaning-Related Log Parameters Format for Device Status LOG SENSE Page. . . 3-64

Figure 3-38. MODE SELECT (6) Command Descriptor Block — Data Format . . . . . . . . . . . . . 3-66

Figure 3-39. MODE SELECT (10) Command Descriptor Block — Data Format . . . . . . . . . . . . 3-66

Figure 3-40. MODE SELECT (6) Mode Parameter List — Data Format . . . . . . . . . . . . . . . . . . . 3-67

Figure 3-41. MODE SELECT (10) Mode Parameter List — Data Format . . . . . . . . . . . . . . . . . . 3-68

Figure 3-42. MODE SELECT (6) Mode Parameter Header — Data Format . . . . . . . . . . . . . . . . 3-69

Figure 3-43. MODE SELECT (10) Mode Parameter Header — Data Format . . . . . . . . . . . . . . . 3-69

Figure 3-44. MODE SELECT Mode Parameter Block Descriptor — Data Format . . . . . . . . . . . 3-71

Figure 3-45. MODE SELECT Page Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 3-73

Figure 3-46. Read / Write Error Recovery MODE SELECT Page — Data Format . . . . . . . . . . . 3-74

Figure 3-47. Disconnect / Reconnect MODE SELECT Page — Data Format . . . . . . . . . . . . . . . 3-76

Figure 3-48. Control Mode MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . 3-78

Figure 3-49. Data Compression MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . . . 3-80

Figure 3-50. Device Configuration MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . 3-82

Figure 3-51. Medium Partition MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . . . . 3-85

Figure 3-52. Fibre Channel Logical Unit Control MODE SELECT Page — Data Format. . . . . . 3-87

Figure 3-53. Fibre Channel Port Control MODE SELECT Page — Data Format . . . . . . . . . . . . 3-88

Figure 3-54. TapeAlert MODE SELECT Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 3-90

Figure 3-55. Vendor Specific Configuration MODE SELECT Page — Data Format. . . . . . . . . . 3-93

Figure 3-56. Disaster Recovery Control MODE SELECT Page — Data Format . . . . . . . . . . . . . 3-95

Figure 3-57. EEPROM Vendor Specific MODE SELECT Page — Data Format . . . . . . . . . . . . . 3-96

Figure 3-58. EEPROM Vendor Specific Page “Vendor ID” Example — Data Format . . . . . . . . 3-102

Figure 3-59. MODE SENSE (6) Command Descriptor Block — Data Format. . . . . . . . . . . . . . 3-105

Figure 3-60. MODE SENSE (10) Command Descriptor Block — Data Format. . . . . . . . . . . . . 3-106

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SDLT 600 Fibre Channel Interface Guide List of Figures

Figure 3-61. MODE SENSE (6) Data Header — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 3-107

Figure 3-62. MODE SENSE (10) Data Header — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 3-108

Figure 3-63. MODE SENSE Block Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 3-109

Figure 3-64. MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-111

Figure 3-65. Read / Write Error Recovery MODE SENSE Page — Data Format . . . . . . . . . . . 3-112

Figure 3-66. Disconnect / Reconnect MODE SENSE Page — Data Format. . . . . . . . . . . . . . . . 3-114

Figure 3-67. Control Mode MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . . . . 3-116

Figure 3-68. Data Compression MODE SENSE Page — Data Format. . . . . . . . . . . . . . . . . . . . 3-118

Figure 3-69. Device Configuration MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . 3-120

Figure 3-70. Medium Partition MODE SENSE Page — Data Format . . . . . . . . . . . . . . . . . . . . 3-123

Figure 3-71. Fibre Channel Logical Unit Control MODE SENSE Page — Data Format . . . . . . 3-124

Figure 3-72. Fibre Channel Port Control MODE SENSE Page — Data Format. . . . . . . . . . . . . 3-125

Figure 3-73. TapeAlert MODE SENSE Page — Data Format. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-127

Figure 3-74. Vendor Specific Configuration Control MODE SENSE Page — Data Format . . . 3-129

Figure 3-75. Disaster Recovery Control MODE SENSE Page — Data Format . . . . . . . . . . . . . 3-131

Figure 3-76. EEPROM Vendor Specific MODE SENSE Page — Data Format . . . . . . . . . . . . . 3-132

Figure 3-77. PERSISTENT RESERVE IN Command Descriptor Block — Data Format . . . . . 3-133

Figure 3-78. PERSISTENT RESERVE IN Read Keys Parameters — Data Format . . . . . . . . . . 3-135

Figure 3-79. PERSISTENT RESERVE IN Read Reservations Parameters — Data Format. . . . 3-136

Figure 3-80. PERSISTENT RESERVE IN Read Reservations Descriptor — Data Format . . . . 3-138

Figure 3-81. PERSISTENT RESERVE OUT Command Descriptor Block — Data Format . . . 3-140

Figure 3-82. PERSISTENT RESERVE OUT Parameter List — Data Format . . . . . . . . . . . . . . 3-147

Figure 3-83. PREVENT / ALLOW MEDIUM REMOVAL Command Descriptor Block —

Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-150

Figure 3-84. READ Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . . 3-151

Figure 3-85. READ ATTRIBUTE Command Descriptor Block — Data Format . . . . . . . . . . . . 3-154

Figure 3-86. READ ATTRIBUTE with ATTRIBUTE VALUES Service Action — Parameter

List Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-157

Figure 3-87. READ ATTRIBUTE with ATTRIBUTE LIST Service Action — Parameter

List Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-158

Figure 3-88. READ ATTRIBUTE with VOLUME LIST Service Action — Parameter

List Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-159

Figure 3-89. READ ATTRIBUTE with PARTITION LIST Service Action — Parameter

List Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-160

Figure 3-90. EMAM Attribute — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-161

Figure 3-91. DEVICE VENDOR/SERIAL NUMBER Attribute — Data Format . . . . . . . . . . . 3-165

Figure 3-92. MEDIUM USAGE HISTORY Attribute — Data Format . . . . . . . . . . . . . . . . . . . . 3-168

Figure 3-93. PARTITION USAGE HISTORY Attribute — Data Format . . . . . . . . . . . . . . . . . . 3-171

Figure 3-94. READ BLOCK LIMITS Command Descriptor Block — Data Format . . . . . . . . . 3-179

Figure 3-95. READ BLOCK LIMITS Data — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-179

Figure 3-96. READ BUFFER Command Descriptor Block — Data Format . . . . . . . . . . . . . . . 3-181

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List of Figures SDLT 600 Fibre Channel Interface Guide

Figure 3-97. READ BUFFER Header — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-184

Figure 3-98. READ BUFFER Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-185

Figure 3-99. ECHO BUFFER Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-186

Figure 3-100. READ POSITION Command Descriptor Block — Data Format . . . . . . . . . . . . . 3-187

Figure 3-101. READ POSITION (Short Form) — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 3-188

Figure 3-102. READ POSITION (Long Form) — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . 3-190

Figure 3-103. RECEIVE DIAGNOSTIC RESULTS Command Descriptor Block —

Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-192

Figure 3-104. RECEIVE DIAGNOSTIC RESULTS — Data Format . . . . . . . . . . . . . . . . . . . . . 3-193

Figure 3-105. REPORT DENSITY SUPPORT Command Descriptor Block — Data Format . . 3-194

Figure 3-106. REPORT DENSITY SUPPORT Header — Data Format . . . . . . . . . . . . . . . . . . . 3-195

Figure 3-107. REPORT DENSITY SUPPORT Data Block Descriptor — Data Format. . . . . . . 3-196

Figure 3-108. REPORT DEVICE IDENTIFIER Command Descriptor Block — Data Format . 3-199

Figure 3-109. REPORT DEVICE IDENTIFIER — Data Format . . . . . . . . . . . . . . . . . . . . . . . . 3-200

Figure 3-110. REPORT LUNS Command Descriptor Block — Data Format. . . . . . . . . . . . . . . 3-201

Figure 3-111. LUN Reporting Parameter List — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 3-202

Figure 3-112. REPORT SUPPORTED OPERATION CODES Command Descriptor Block —

Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-203

Figure 3-113. All_commands Parameter Data — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 3-205

Figure 3-114. All_commands Command Descriptor — Data Format . . . . . . . . . . . . . . . . . . . . . 3-206

Figure 3-115. One_command Parameter Data — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . 3-207

Figure 3-116. REPORT SUPPORTED TASK MANAGEMENT FUNCTIONS Command

Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-209

Figure 3-117. TASK MANAGEMENT FUNCTIONS Command Parameter Data —

Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-210

Figure 3-118. REQUEST SENSE Command Descriptor Block — Data Format . . . . . . . . . . . . 3-211

Figure 3-119. REQUEST SENSE — Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-212

Figure 3-120. REWIND Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . 3-223

Figure 3-121. SEND DIAGNOSTIC Command Descriptor Block — Data Format . . . . . . . . . . 3-224

Figure 3-122. SET DEVICE IDENTIFIER Command Descriptor Block — Data Format . . . . . 3-228

Figure 3-123. SET DEVICE IDENTIFIER Parameter List — Data Format. . . . . . . . . . . . . . . . 3-229

Figure 3-124. SPACE Command Descriptor Block — Data Format . . . . . . . . . . . . . . . . . . . . . . 3-230

Figure 3-125. TEST UNIT READY Command Descriptor Block — Data Format . . . . . . . . . . 3-232

Figure 3-126. VERIFY Command Descriptor Block — Data Format. . . . . . . . . . . . . . . . . . . . . 3-233

Figure 3-127. WRITE Command Descriptor Block — Data Format. . . . . . . . . . . . . . . . . . . . . . 3-234

Figure 3-128. WRITE ATTRIBUTE Command Descriptor Block — Data Format . . . . . . . . . . 3-236

Figure 3-129. WRITE ATTRIBUTE — Parameter List Format . . . . . . . . . . . . . . . . . . . . . . . . . 3-237

Figure 3-130. WRITE BUFFER Command Descriptor Block — Data Format . . . . . . . . . . . . . 3-240

Figure 3-131. WRITE FILEMARKS Command Descriptor Block — Data Format. . . . . . . . . . 3-243

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1.1 Purpose and Scope

REV

CHAPTER 1

Introduction

This reference guide is a comprehensive source of information about the Fibre Channel Protocol (FCP) for SCSI used by the Super DLTtape™-generation (SDLT) tape drives. Implementation of the FCP standard enables the transmission of standard SCSI command formats, data, and parameters, and the receipt of SCSI status and sense information across a Fibre Channel network using the standard Fibre Channel frame and sequence formats. The SDLT tape drive implementation of FCP operates with Fibre Channel Class of Service 3 and operates across Fibre Channel fabrics and arbitrated loops.

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, FCP, SAM, SSC, SPC, and SPI standards is assumed.

This document’s primary audience is the OEM technical system integrators who are responsible for the FCP 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

• SDLT Interactive Library Interface Specification (6464162-01)

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Related Documents SDLT 600 Fibre Channel Interface Guide

1.3 Related Documents

• SDLT 600 SCSI Interface Guide (81-81200-01)

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

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

 Fibre Channel Protocol for SCSI (FCP)

 SCSI Architecture Model (SAM)

 SCSI Primary Commands (SPC)

 SCSI Parallel Interface (SPI)

 SCSI Stream Commands (SSC)

1.4 Structure of this Manual

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

• Chapter 2, Fibre Channel Protocol and SCSI, provides an overview of SDLT tape drive-

specific information about transmitting SCSI commands using the Fibre Channel Protocol (FCP). Background knowledge of the SCSI-3, FCP, SAM, SSC, SPC, and SPI standards is assumed.

• Chapter 3, SCSI Commands, describes in detail each command supported by SDLT tape drives

using FCP. The SCSI command system enables a Fibre Channel port acting as a SCSI initiator to direct an SDLT tape drive located on another Fibre Channel port 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.

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SDLT 600 Fibre Channel Interface Guide Chapter 1: SCSI Commands

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)

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.

81-81202-01 REV A02 July 2004 1-3

Reader Comments SDLT 600 Fibre Channel 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

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SDLT 600 Fibre Channel Interface Guide SCSI Commands

This chapter presents the background information required to use this manual successfully. Specifically, it covers the following topics:

• “Background Information About Fibre Channel” introduces the Fibre Channel architecture.

• “Implementation Details for SDLT 600 Tape Drives” lists the Fibre Channel features that SDLT

600 tape drives implement.

81-81202-01 REV A02

CHAPTER 2

Fibre Channel Protocol and SCSI

2.1 Background Information About Fibre Channel

Fibre Channel is a high-speed serial architecture that allows either optical or electrical connections at data rates of 1 Gb/second or 2 Gb/second. Fibre Channel supports point-to-point, fabric, and arbitrated loop topologies. Implementation of the Fibre Channel Protocol (FCP) standard enables the transmission of SCSI commands, data, and parameters, and the receipt of SCSI status and sense information across the Fibre Channel connection.

2.1.1 Fibre Channel Interface Type

The SDLT 600 Fibre Channel tape drive supports the following features:

• Automatic speed negotiation, with transfer rates of:

 100 megabytes per second (1 Gb/second)

 200 megabytes per second (2 Gb/second)

• Automatic topology negotiation (the tape drive operates as an NL_Port or N_Port):

 Arbitrated Loop: private loop, NL_Port to NL_Port(s)

 Arbitrated Loop: public loop, NL_Port to NL_Port(s) and one FL_Port

 Fabric attachment: N_Port to F_Port

 Point-to-Point attachment: N_Port to N_Port

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Background Information About Fibre Channel SDLT 600 Fibre Channel Interface Guide

• FCP (SCSI-3 command set) for tape devices

• Class 3 level of service

• Basic and extended link services

• Task retry identification

• Hard assigned port addresses, when attached to a library. The library can assign a hard address to

the tape drive. If the library does not assign a hard address, the tape drive takes a soft address initially.

2.1.2 Relationship Between Fibre Channel and 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. Transmitting SCSI command-set information across a Fibre Channel connection makes the large body of SCSI application and tape driver software available for use in the high-performance Fibre Channel environment.

NOTE: Complete FCP and SCSI standards documents are available at

www.t10.org.

SDLT 600 tape drives conform to the SCSI-3 standard, with commands transported using the FCP-2 standard. This manual assumes you are familiar with the FCP, SAM, SPC, FC-FS, and SSC standards.

2.1.3 World-wide Names

Each SDLT 600 tape drive contains two unique, 64-bit world-wide names for Fabric Login: a node name for the drive and one for the drive’s Fibre Channel port. The drive reports the world-wide names to the host through the INQUIRY Command (12h). See “Device Identification Page (83h)” on

page 3-18 for more information.

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2.2 Implementation Details for SDLT 600 Tape Drives

This section introduces the Fibre Channel features SDLT 600 tape drives implement including task management functions, persistent reservations, Basic and Extended Link Service, and unsolicited control support.

2.2.1 Task Management

SDLT 600 tape drives support the following task management functions:

Table 2-1. Supported Task Management Functions

Task Management

Bit

Flag SDLT 600 Tape Drive Action

7 Obsolete None FCP Command Fields

6 Clear ACA None Task Management Function

5 Target Reset The initiator sends this task management

function to reset all logical units. When the drive receives it, the drive clears all I/O processes. The Target Reset task management flag causes the drive to:

Response Code Setting in FCP Response Payload

Invalid

Not Supported

Task Management Function Complete

• Flush the contents of cache to tape

• Execute a soft reset.

The drive creates a Unit Attention condition for all initiators after accepting and processing the Target Reset. The Additional Sense Code is set to DEVICE RESET FUNCTION OCCURRED.

If a WRITE command is in progress and STATUS has not been sent to the initiator when the drive receives this task management function, some or all of the data for this command may be written to the medium.

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Table 2-1. Supported Task Management Functions (Continued)

Task Management

Bit

Flag

SDLT 600 Tape Drive Action

4 Reset LUN This task management function causes the

drive to reset the selected unit.

Response Code Setting in FCP Response Payload

Task Management Function Complete

When the LUN is set to 0 and the drive receives the Reset LUN task management function, the drive is reset as described in Target Reset above.

3 Reserved None FCP Command Fields

Invalid

2 Clear Task Set None Task Management Function

Not Supported

1 Abort Task Set This task management function causes the

drive to clear the current I/O process on the

Task Management Function

Complete selected unit. Buffered (cached) write operations are completed if possible. The current settings of MODE SELECT parameters and reservations are not affected. Commands, data, and status for other initiators are not affected.

This task management function can be sent to a logical unit that is not currently performing an operation for the initiator.

0 Reserved None FCP Command Fields

Invalid

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2.2.2 Persistent Reservations

SDLT 600 tape drives support the PERSISTENT RESERVE OUT and PERSISTENT RESERVE IN commands. The PERSISTENT RESERVE OUT command allows a node connected to the SDLT 600 tape drive port to reserve the drive for data transfers. The node that issued the PERSISTENT RESERVE OUT command must issue another PERSISTENT RESERVE OUT command to release the drive before a different node can initiate a data transfer to the drive. Reservations in effect are not released by reset or power-down conditions. The PERSISTENT RESERVE IN command obtains information about persistent reservations and registrations active on an SDLT 600 tape drive. See

“PERSISTENT RESERVE OUT Command (5Fh)” on page 3-140 and “PERSISTENT RESERVE IN Command (5Eh)” on page 3-133 for more information.

2.2.3 Link Service and Unsolicited Control Support

SDLT 600 tape drives provide Link Service and Unsolicited Control support as described in this section.

Basic Link Service

The following table lists the Basic Link Service requests the drive supports. Refer to the FC-FS specification for details.

Table 2-2. Supported Basic Link Service Commands

R_CTL Abbreviation Description

80h NOP No Operation

81h ABTS Abort Sequence

84h BA_ACC Basic Accept

85h BA_RJT Basic Reject

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Extended Link Service Commands

The following table lists the Extended Link Service (ELS) commands the drive supports. Refer to the FC-FS specification for details.

Table 2-3. Supported Extended Link Service Commands

ELS Command Abbreviation Description

01h LS_RJT Link Service Reject

02h LS_ACC Link Service Accept

03h PLOGI N_Port Login

04h FLOGI F_Port Login

05h LOGO Logout

06h ABTX Abort Exchange

0Eh RTV Read Timeout Value

11h TEST Test (Loop Initialization)

12h RRQ Reinstate Recovery Qualifier

13h REC Read Exchange Concise

20h PRLI Process Login

21h PRLO Process Logout

50h PDISC Discover N_Port Service Parameters

52h ADISC Discover Address

56h RPS Read Port Status Block

57h RPL Read Port List

60h FAN Fabric Address Notification

78h RNID Request Node Identification Data

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Extended Link Service Loop Initialization

The following table lists the ELS Loop Initialization commands the drive supports. The drive is capable of being a loop initialization master. Refer to the FC-AL-2 specification for details.

Table 2-4. Supported Extended Link Service Loop Initialization Commands

Loop Initialization Identifier

1101h LISM Select Loop Master Based on 8-Byte Port Name

1102h LIFA Fabric Assigned AL_PA Bit Map

1103h LIPA Previously Acquired AL_PA Bit Map

1104h LIHA Hard Assigned AL_PA Bit Map

1105h LISA Soft Assigned AL_PA Bit Map

1106h LIRP Report AL_PA Position Map

1107h LILP Loop AL_PA Position Map

Abbreviation Description

FC-4 Link Service Commands

The following table lists the FC-4 Link Service commands the drive supports. Refer to the FC-FS and FCP-2 specifications for details.

Table 2-5. Supported FC-4 Link Service Commands

FC-4 Command Abbreviation Description

13h REC Read Exchange Concise

14h SRR Sequence Retransmission Request

Unsolicited Control / Name Server Requests

The following table lists the Name Server Requests the drive supports. Refer to FC-GS for details.

Table 2-6. Supported Name Server Requests

Name Server Request Abbreviation Description

0217h RFT_ID Register FC-4 Types

021Fh RFF_ID Register FC-4 Features – Port Identifier

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This chapter describes the supported SCSI commands, options, and error recovery procedures implemented in the Quantum SDLT tape drive. This chapter does not fully reiterate the entire ANSI SCSI specification; for information of this nature, refer to the SCSI specification itself.

The web sites http://www.scsita.org and http://www.t10.org are also helpful sources of information.

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CHAPTER 3

SCSI Commands

3.1 Overview of SCSI Command and Status Processing

The Quantum SDLT tape drive supports the SCSI-3 command set. The SDLT tape drive supports the SCSI commands listed in Table 3-1.

Table 3-1. SCSI Commands Supported by SDLT Tape Drives

Command Operation Code Subsection

ERASE 19h Page 3-7

INQUIRY 12h Page 3-8

LOAD UNLOAD 1Bh Page 3-26

LOCATE 2Bh Page 3-28

LOG SELECT 4Ch Page 3-29

LOG SENSE 4Dh Page 3-37

MODE SELECT (6) / (10) 15h / 55h Page 3-65

MODE SENSE (6) / (10) 1Ah / 5Ah Page 3-105

PERSISTENT RESERVE IN 5Eh Page 3-133

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Table 3-1. SCSI Commands Supported by SDLT Tape Drives (Continued)

Command Operation Code Subsection

PERSISTENT RESERVE OUT 5Fh Page 3-140

PREVENT / ALLOW MEDIUM REMOVAL 1Eh Page 3-150

READ 08h Page 3-151

READ ATTRIBUTE 8Ch Page 3-154

READ BLOCK LIMITS 05h Page 3-179

READ BUFFER 3Ch Page 3-181

READ POSITION 34h Page 3-187

RECEIVE DIAGNOSTIC RESULTS 1Ch Page 3-192

REPORT DENSITY SUPPORT 44h Page 3-194

REPORT DEVICE IDENTIFIER

A3h, SA= 05h

REPORT LUNS A0h Page 3-201

Page 3-199

Page 3-203

Page 3-209

REPORT SUPPORTED OPERATION CODES

REPORT SUPPORTED TASK MANAGEMENT

A3h, SA= 0Ch

A3h, SA= 0Dh

OPERATIONS

REQUEST SENSE 03h Page 3-211

REWIND 01h Page 3-223

SEND DIAGNOSTIC 1Dh Page 3-224

SET DEVICE IDENTIFIER A4h Page 3-228

SPACE 11h Page 3-230

TEST UNIT READY 00h Page 3-232

VERIFY 13h Page 3-233

WRITE 0Ah Page 3-234

WRITE ATTRIBUTE 8Dh Page 3-236

WRITE BUFFER 3Bh Page 3-240

WRITE FILEMARKS 10h Page 3-243

1. SA = Service Action

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NOTE: The RECEIVE DIAGNOSTIC RESULTS and SEND DIAGNOSTIC

DATA commands implement vendor-specific pages to test the drive during the manufacturing process. Quantum recommends that initiators specify only the non-page format variants of these commands (PF=0) for all pages except page 40h.

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3.1.1 Unit Attention Condition

Queued Unit Attentions are implemented on the SDLT tape drive and are maintained separately for each valid LUN for each initiator. Unit Attentions are created in each of the following circumstances:

• At power-on.

• Port logout or implicit logout.

• When the medium may have changed asynchronously.

• When another initiator changes the Mode parameters.

• When a firmware (microcode) update has completed.

• Task Management Target Reset.

Up to three Unit Attentions may be queued for each initiator. If an initiator does not clear its queued Unit Attentions, any additional Unit Attention conditions are not reported.

3.1.2 Behavior at Power-On

The SDLT tape drive’s behavior at power-on consists of the following:

• Transceivers are turned on and auto speed negotiation occurs unless a speed jumper on the rear

panel of the drive is set, in which case the drive operates at the selected speed.

• Topology is initialized (loop, point-to-point, or fabric).

• In point-to-point mode, the drive is ready to send a FLOGI to determine if there is a fabric present.

• In public loop mode, the drive is ready to log into the fabric.

• In private loop mode, the drive is ready to accept a login request from a host.

• The drive rewinds the tape to Beginning of Tape (BOT).

• The drive goes through a calibration process at power-on and loading of media.

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3.1.3 Data Cache and Tape Write Interaction

The Quantum SDLT tape drive contains a data cache that buffers blocks and filemarks until it writes them to tape. This section describes what happens when the drive writes, or “flushes,” those blocks to tape. A MODE SELECT parameter allows the data cache to be disabled (unbuffered mode). In this mode, every WRITE command causes data to be written to the tape medium before the drive returns the STATUS byte to the host.

NOTE: Unbuffered mode is NOT recommended due to the poor performance that

may result.

The drive writes the contents of the write data cache to the tape medium under the following circumstances:

• When the initiator issues a WRITE FILEMARKS command with the Immediate bit set to 0.

• When data has been in the cache longer than the maximum time specified by the value of the

MODE SELECT command Write Delay Time parameter (the default is 10 seconds).

• When the drive receives a non-write-type media access command.

• When a RESET condition occurs.

3.2 SCSI Command Descriptions

The SCSI command descriptions that make up the rest of this chapter contain detailed information about each command the SDLT tape drive supports. The SCSI commands are presented in alphabetical order. Fields common to many of the SCSI commands are not repeated for every command; instead they are supported as shown in Table 3-2:

Table 3-2. Fields Common to Many SCSI Commands

Name of Field How Field is Supported in SCSI Commands

Logical Unit Number (LUN) LUN for the SDLT tape drive is 0.

Control All SCSI commands must have a Control byte, which is implemented as

described in SCSI Architecture Model – 3 (SAM–3).

Reserved Reserved bits, fields, bytes, and code values are set aside for future

standardization and must be set to 0. If the drive receives a command that contains non-zero bits in a reserved field or a reserved code value, the drive terminates the command with a CHECK CONDITION status and the Sense Key is set to ILLEGAL REQUEST.

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Throughout this manual, multiple bytes that contain information about specific command parameters are portrayed as shown in the example of the Parameter List Length field (bytes 7 to 8) of the LOG SELECT command, shown as follows:

Bit

Byte

7 – 8

7 6 5 4 3 2 1 0

(Bytes 0 – 6)

(MSB)

Parameter List Length

(LSB)

This sample indicates that the most significant bit (MSB) of the field is bit 7 of byte 7; the least significant bit is bit 0 of byte 8. The shorthand version of presentation is used in this manual to save space.

This is an alternate, “shorthand” presentation for:

Bit

Byte

7 (MSB)

7 6 5 4 3 2 1 0

(Bytes 0 – 6)

Parameter List Length

(LSB)

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3.3 ERASE Command (19h)

The ERASE command erases the data on the tape medium. The SDLT tape drive erases the data only if the Long bit is set to 1 and the drive receives the ERASE command while it is at Beginning of Tape (BOT). If the Long bit is set to 0, this command has no effect on the tape medium.

NOTE: The time required to completely erase a Super DLTtape II cartridge is

more than 3 hours.

Bit

Byte

0 Operation Code (19h)

1 Reserved Immed Long

2 – 4 Reserved

5 Control

7 6 5 4 3 2 1 0

Figure 3-1. ERASE Command Descriptor Block — Data Format

Table 3-3. ERASE Command Descriptor Block — Field Descriptions

Field Description

Immed Immediate. If set to 0, the drive does not return status until the selected operation

has completed. If set to 1, the drive returns status as soon as it initiates the operation.

Long Must be set to 1 to perform an erase operation. Issuing an ERASE command when

the tape is not at BOT is an ILLEGAL REQUEST. If set to 0, the drive performs no operation—the ERASE command does not affect the tape.

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INQUIRY Command (12h) SDLT 600 Fibre Channel Interface Guide

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3.4 INQUIRY Command (12h)

The INQUIRY command allows the initiator to direct all attached devices to return information about themselves. SDLT devices respond by providing a variety of information, including their World Wide Name and other important characteristics. The SDLT tape drive identifies itself as a Sequential Access Storage Device that implements the SCSI-3 protocol.

NOTE: The tape drive does not need to access its tape medium to respond to the

INQUIRY command.

The drive can provide different categories of data in response to an INQUIRY command:

• Standard Inquiry Data — contains basic data about the drive, including vendor-specific inquiry

data that precisely identifies the revision of SDLT tape drive subsystem components.

• Vital Product Data — comprises several pages of additional data. Each Vital Product Data page

requires a separate INQUIRY command from the initiator. To see a list of specific Vital Product Data pages returned by this SDLT tape drive, refer to “Supported Vital Product Data Page (00h)”

on page 3-16.

An INQUIRY command is neither affected by—nor does it clear—a Unit Attention condition.

Bit

Byte

0 Operation Code (12h)

1 Reserved Obsolete EVPD

2 Page Code

3 – 4

5 Control

7 6 5 4 3 2 1 0

(MSB)

Allocation Length

(LSB)

Figure 3-2. INQUIRY Command Descriptor Block — Data Format

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Table 3-4. INQUIRY Command Descriptor Block — Field Descriptions

Field Description

EVPD Enable Vital Product Data. If set to 0, the drive returns the Standard Inquiry Data.

If EVPD is set to 1, the drive returns the Vital Product Data Page specified by Page Code.

Page Code Specifies the Vital Product Data Page that the drive is to return when EVPD is set

to 1. Figure 3-5 on page 3-16 shows the Page Codes for the Vital Product Data pages the drive supports.

Allocation Length

Specifies the number of bytes of inquiry information the drive is allowed to return to the initiator. The drive does not return Error status if the value in this field truncates the requested information.

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3.4.1 Standard Inquiry Data Page

Figure 3-3 shows the format of the Standard Inquiry Data page returned by the drive.

Bit

Byte

0 Peripheral Qualifier Peripheral Device Type

1 RMB Reserved

2 Ve r s i on

3 Obsolete NormACA HiSup Response Data Format

4 Additional Length

5 SCCS ACC ALUA 3PC Reserved

6 BQue EncServ VS MultiP MChngr Obsolete Addr16

7 RelAdr Obsolete Wbus16 Sync Linked Obsolete CmdQue VS

8 – 15

16 – 31

7 6 5 4 3 2 1 0

(MSB)

Vendor Identification (QUANTUM)

(MSB)

Product Identification

(LSB)

(MSB)

32 – 35

(MSB)

36 – 55

56 Reserved Clocking QAS IUS

57 Reserved

(MSB)

58 – 59

(n – 1)

– n

Version Descriptor (last version descriptor, if more than one)

Product Revision Level (hhss)

(LSB)

Vendor Specific Bytes

(LSB)

Version Descriptor (first version descriptor)

(LSB)

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

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The following table contains field descriptions for the data the drive returns.

Table 3-5. Standard Inquiry Data Page — Field Descriptions

Field Name Va lu e Description

Peripheral Qualifier 0 This field contains 000b if the command is directed to a

valid device. The field contains 011b if there is no device at the selected LUN.

Peripheral Device Type 1 This field contains 01h if the LUN is 0h, 8h if the LUN

selects an attached loader, or 1Fh if no device is attached to the selected LUN.

RMB 1 Removable Medium Bit. Always set to 1.

Version 04h The drive supports ANSI SCSI-3 per SPC-2.

NormACA 0 Normal ACA Supported. When set to 0, indicates that the

drive does not support setting the NACA bit to 1 in the Control byte of the CDB. When set to 1, indicates that the drive supports setting the NACA bit to 1.

HiSup 1 Hierarchical Support. When set to 0, indicates that the

drive does not support the hierarchical addressing model to assign LUNs to logical units. When set to 1, indicates that the drive does support the hierarchical addressing model to assign LUNs to logical units.

Response Data Format 2 This Standard Inquiry Data is in the format described in

the Version field.

Additional Length --- The drive uses this field to indicate the number of

additional bytes of INQUIRY Response Data available. The value depends on the number of version descriptors returned in the INQUIRY Response Data.

SCCS 0 SCC Supported. The drive does not contain an embedded

storage array controller component. Always set to 0.

ACC 0 Access Controls Coordinator. The drive does not contain

an access controls coordinator. Always set to 0.

ALUA 00b Asymmetric Logical Unit Access. Not supported. Always

set to 0.

3PC 0 Third-party Copy. Not supported. Always set to 0.

BQue 0 Tagged (Basic) Command Queuing. Not supported.

Always set to 0.

EncServ 0 Enclosure Services. The drive does not contain an

embedded enclosure services component. Always set to 0.

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Table 3-5. Standard Inquiry Data Page — Field Descriptions (Continued)

Field Name Va lu e Description

VS 0 Vendor Specific. Both VS bits are always set to 0.

MultiP 0 Multi Port. The drive is a single-port device that does not

implement multi-port requirements. Always set to 0.

MChnger 0 Medium Changer. The drive does not support attached

medium changer commands sent to the drive’s LUN. Always set to 0.

Addr16 0 16-bit Addressing. Restricted for Fibre Channel devices.

Always set to 0.

RelAdr 0 Relative Addressing. Not supported. Always set to 0.

WBus16 0 Wide Bus 16. Restricted for Fibre Channel devices.

Always set to 0.

Sync 0 Synchronous Data Transfer. Restricted for Fibre Channel

devices. Always set to 0.

Linked 0 Linked Command Support. Not supported. Always set to

CmdQue 0 Tagged Command Queuing. Not supported. Always set to

Vendor Identification QUANTUM The value in this field is left-aligned and set to

“QUANTUM”. The remainder of the field is filled with space characters.

Product Identification SDLT600 For the SDLT 600 tape drive, this field is set to

“SDLT600”, left-aligned, filled with space characters to the end of the field.

Product Revision Level --- Contains 4 bytes of ASCII data that provide the drive’s

firmware revision levels. The first 2 bytes are the version number for servo code. The second 2 bytes are the version number of the SCSI/read/write code. When a firmware update is performed on the SDLT tape drive, the second two bytes of the revision level change to reflect that update.

Vendor Specific --- See “Vendor Specific Inquiry Data Page” on page 3-14

for details about what types of vendor-specific information are returned.

Clocking 0 Restricted for Fibre Channel devices. Always set to 0.

QAS 0 Quick Arbitrate Supported. Not supported.Restricted for

Fibre Channel devices. Always set to 0.

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Table 3-5. Standard Inquiry Data Page — Field Descriptions (Continued)

Field Name Va lu e Description

IUS 0 Information Units Supported. Not supported. Restricted

for Fibre Channel devices. Always set to 0.

Version Descriptors - Identifies the industry standards to which the drive

conforms. Note: As many version descriptors as apply for the drive are returned.

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Vendor Specific Inquiry Data Page

The following information precisely identifies the revision of SDLT tape drive subsystem components. Note: Page content is subject to change at any time.

Bit

Byte

36 Product Family Released Firmware

37 Firmware Major Version Number

38 Firmware Minor Version Number

39 EEPROM Format Major Version Number

40 EEPROM Format Minor Version Number

41 Firmware Personality

42 Firmware Subpersonality

43 Vendor Specific Subtype

44 Controller Hardware Version Number

45 Tape Drive EEPROM Version Number

46 Tape Drive Hardware Version Number

47 Media Loader Firmware Version Number

48 Media Loader Hardware Version Number

7 6 5 4 3 2 1 0

49 Media Loader Mechanical Version Number

50 Media Loader Present Flag

51 Library Present Flag

52 – 55 Module Revision

Figure 3-4. Vendor Specific Inquiry Data Page — Data Format

NOTE: Refer also to “Subsystem Components Revision Page (C1h)” on

page 3-24 for information about an alternate method for accessing these

same drive subsystem components.

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Table 3-6. Vendor Specific Inquiry Data Page — Field Descriptions

Field Name Description

Product Family Indicates the data density of each of the SDLT tape drives as

follows:

Valu e Dr i v e D en s it y

Ah 110.0 / 220.0 GB

Bh 160.0 / 320.0 GB

Ch 300.0 / 600.0 GB

Released Firmware Differentiates between released and test versions of firmware.

When set to 1, indicates released code (Vxxx); when set to 0, indicates field test code (Txxx). Released code has no minor firmware version number (byte 38 is set to 0). For tracking purposes, field test and engineering versions of code have nonzero minor firmware version numbers.

Version Number Fields These fields display the various version numbers in binary

format, instead of ASCII.

Firmware Personality Numeric indicator of firmware personality. Note that when set

to 4, indicates OEM family.

Firmware Subpersonality Indicates the variant of the firmware personality. Always set to

1, indicating the primary firmware personality variant.

Vendor Specific Subtype Product identification.

Media Loader Present Flag When set to 0, indicates no loader present. Non-zero indicates

loader is present.

Library Present Flag When set to 0, indicates no library present. Non-zero indicates

library is present.

Module Revision A 4-byte ASCII string representing the revision level of the tape

drive’s module (the controller PCBA attached to the drive).

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3.4.2 Vital Product Data Pages

The following subsections describe the Vital Product Data Pages for the SDLT tape drive.

Supported Vital Product Data Page (00h)

The Supported Vital Product Data Page provides a directory of the Vital Product Data pages that the drive supports. The supported pages are:

• Supported Vital Product Data Page (00h)

• Unit Serial Number Page (80h)

• Device Identification Page (83h)

• Firmware Build Information Page (C0h)

• Subsystem Components Revision Page (C1h).

Bit

Byte

0 Peripheral Qualifier Peripheral Device Type

1 Page Code (00h)

2 Reserved

3 Page Length (05h)

4 Supported Vital Product Data Page (00h)

5 Unit Serial Number Page (80h)

6 Device Identification Page (83h)

7 Firmware Build Information Page (C0h – Vendor Specific)

8 Subsystem Components Revision Page (C1h – Vendor Specific)

7 6 5 4 3 2 1 0

Figure 3-5. Supported Vital Product Data Pages — Data Format

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Unit Serial Number Page (80h)

Figure 3-6 shows the format of the Unit Serial Number page the drive returns.

Bit

Byte

0 Peripheral Qualifier Peripheral Device Type

1 Page Code (80h)

2 Reserved

3 Page Length (10h)

4 – 19 Serial Number

7 6 5 4 3 2 1 0

Figure 3-6. Unit Serial Number Page — Data Format

Table 3-7. Unit Serial Number Page — Field Descriptions

Field Name Description

Serial Number The serial number given is the serial number of the module or the drive,

typically beginning with “MX”, indicating the site of manufacture. If the drive serial number is valid, it is reported; otherwise, the module serial number is reported. The serial number appears on the bar code label. The drive returns the serial number in ASCII format.

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Device Identification Page (83h)

Figure 3-7 shows the format of the Device Identification page the drive returns.

Bit

Byte

0 Peripheral Qualifier Peripheral Device Type

1 Page Code (83h)

2 Reserved

3 Page Length

4 – n Identification Descriptors

7 6 5 4 3 2 1 0

Figure 3-7. Device Identification Page — Data Format

Table 3-8. Device Identification Page — Field Descriptions

Field Name Description

Peripheral Qualifier

Peripheral Device Type

Contains 000b if the command is directed to a valid device. Contains 011b if there is no device at the selected LUN.

Contains 01h if the LUN is 0h, 8h if the LUN selects an attached library, or 1Fh if there is no device at the selected LUN.

Page Code A value of 83h identifies this as the Device Identification page.

Page Length Indicates the size of the returned Device Identification page.

Identification Descriptors

The drive always returns the Vendor-unique Logical Unit Identifier and the Logical Unit NAA Identifier. It may also return other identifiers. The following identifiers are described in this section:

• Vendor-unique Logical Unit Identifier

• Logical Unit NAA Identifier

• Port NAA Identifier

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Vendor-unique Logical Unit Identifier

Figure 3-8 shows the format of the Vendor-unique Logical Unit Identifier.

Bit

Byte

0 Protocol Identifier Code Set (2h)

1 PIV (0) Rsv’d Association (0) Identifier Type (1)

2 Reserved

3 Identifier Length

4 – 11

12 – 27

28 – n

7 6 5 4 3 2 1 0

(MSB)

Vendor Identification

(MSB)

Product Identification

(MSB)

Serial Number

Figure 3-8. Vendor-unique Logical Unit Identifier— Data Format

(LSB)

Table 3-9. Vendor-unique Logical Unit Identifier — Field Descriptions

Field Name Description

Protocol Identifier

Code Set Indicates the type of data found in the Identifier field. Set to 2h, indicating

PIV Protocol Identifier Valid. Set to 0, indicating that the value returned in the

Association Set to 0, indicating that the Identifier is associated with the logical unit.

Identifier Type Type of identifier.

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Set to 0.

ASCII graphic code (values 20h through 7Eh) data.

Protocol Identifier field should be ignored.

Value Description

1h T10 vendor identification

INQUIRY Command (12h) SDLT 600 Fibre Channel Interface Guide

Table 3-9. Vendor-unique Logical Unit Identifier — Field Descriptions (Continued)

Field Name Description

Identifier Length

Specifies the length in bytes of the Identifier field. If the Allocation Length field of the CDB is too small to transfer the entire identifier, the Identifier Length value is not adjusted to reflect the truncation.

Vendor Identification

Product Identification

The value in this field is left-aligned and set to “QUANTUM”. The remainder of the field is filled with space characters.

For the SDLT 600 drive, this field is set to “SDLT600”, left-aligned, and filled with space characters to the end of the field.

Serial Number The serial number given is the serial number of the module or the drive,

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Logical Unit NAA Identifier

Figure 3-9 shows the format of the Logical Unit NAA Identifier.

Bit

Byte

0 Protocol Identifier Code Set (1)

1 PIV (0) Rsv’d Association (0) Identifier Type (3h)

2 Reserved

3 Identifier Length (08h)

4 – 11

7 6 5 4 3 2 1 0

(MSB)

NAA Identifier (binary)

Figure 3-9. Logical Unit NAA Identifier — Data Format

Table 3-10. Logical Unit NAA Identifier — Field Descriptions

Field Name Description

Protocol Identifier

Set to 0.

(LSB)

Code Set Indicates the type of data found in the Identifier field. Set to 1h, indicating

binary data.

PIV Protocol Identifier Valid. Set to 0, indicating that the value returned in the

Protocol Identifier field should be ignored.

Association Set to 0, indicating that the Identifier is associated with the logical unit.

Identifier Type Type of identifier.

Value Description

3h NAA identifier

Identifier Length

NAA Identifier Contains the Name Address Authority (NAA) identifier for the logical unit.

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INQUIRY Command (12h) SDLT 600 Fibre Channel Interface Guide

Port NAA Identifier

Figure 3-10 shows the format of the Port NAA Identifier.

Bit

Byte

0 Protocol Identifier Code Set (1)

1 PIV (1) Rsv’d Association (1) Identifier Type (3)

2 Reserved

3 Identifier Length (08h)

4 – 11

7 6 5 4 3 2 1 0

(MSB)

NAA Identifier (binary)

Figure 3-10. Port NAA Identifier — Data Format

Table 3-11. Port NAA Identifier — Field Descriptions

Field Name Description

Protocol Identifier

When the PIV bit is set to 1, the drive returns 0 which indicates that the protocol is Fibre Channel.

(LSB)

Code Set Indicates the type of data found in the Identifier field. Set to 1h, indicating

binary data.

PIV Protocol Identifier Valid. Set to 1, indicating that the value returned in the

Protocol Identifier field is valid.

Association Set to 1h, indicating that the Identifier is associated with the port.

Identifier Type Type of identifier.

Value Description

3h NAA identifier

Identifier Length

NAA Identifier Contains the Name Address Authority (NAA) identifier for the port.

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Firmware Build Information Page (C0h)

Figure 3-11 shows the format of the Firmware Build Information page the drive returns.

Bit

Byte

0 Peripheral Qualifier Peripheral Device Type

1 Page Code (C0h)

2 Reserved

3 Page Length (28h)

4 – 7 Servo Firmware Revision

8 – 11 Servo Firmware Checksum

12 – 15 Servo EEPROM Checksum

16 – 19 Controller Firmware Checksum

20 – 43 Controller Firmware Build Date

7 6 5 4 3 2 1 0

Figure 3-11. Firmware Build Information Page — Data Format

Table 3-12. Firmware Build Information Page — Field Descriptions

Field Name Description

Servo Firmware Revision

Checksum The Servo Firmware, Servo EEPROM, and READ / WRITE Firmware

Controller Firmware Build Date

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Contains the revision number of the servo firmware.

checksums are binary numbers used for positive firmware and EEPROM identification.

Firmware Build Date. An ASCII string in DD-MM-YYYY HH:MM:SS format.

INQUIRY Command (12h) SDLT 600 Fibre Channel Interface Guide

Subsystem Components Revision Page (C1h)

The following information precisely identifies the revision of SDLT tape drive subsystem components. Note: Page content is subject to change at any time.

Bit

Byte

0 Peripheral Qualifier Peripheral Device Type

1 Page Code (C1h)

2 Reserved

3 Page Length (39h)

4 Product Family Released Firmware

5 Firmware Major Version Number

6 Firmware Minor Version Number

7 EEPROM Format Major Version Number

8 EEPROM Format Minor Version Number

9 Firmware Personality

10 Firmware Subpersonality

11 Vendor Specific Subtype

12 Controller Hardware Version Number

7 6 5 4 3 2 1 0

13 Tape Drive EEPROM Version Number

14 Tape Drive Hardware Version Number

15 Media Loader Firmware Version Number

16 Media Loader Hardware Version Number

17 Media Loader Mechanical Version Number

18 Media Loader Present Flag

19 Library Present Flag

20 – 23 Module Revision

24 – 43 Unit Serial Number

Figure 3-12. Subsystem Components Revision Page — Data Format

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Table 3-13. Subsystem Components Revision Page — Field Descriptions

Field Name Description

Product Family Indicates the data density of each of the SDLT tape drives as

follows:

Valu e D r i v e D en s it y

Ah 110.0 / 220.0 GB

Bh 160.0 / 320.0 GB

Ch 300.0 / 600.0 GB

Released Firmware Differentiates between released and test versions of firmware.

Version Number Fields These fields display the various version numbers in binary

format, instead of ASCII.

Firmware Personality Numeric indicator of firmware personality. Note that when set

to 4, indicates OEM family.

Firmware Subpersonality Indicates the variant of the firmware personality. Always set to

1, indicating the primary firmware personality variant.

Vendor Specific Subtype Product identification.

Media Loader Present Flag When set to 0, indicates no loader present. Non-zero indicates

loader is present.

Library Present Flag When set to 0, indicates no library present. Non-zero indicates

library is present.

Module Revision A 4-byte ASCII string representing the revision level of the tape

drive’s module (the controller PCBA attached to the drive).

Unit Serial Number The drive’s serial number; matches what is shown on the

exterior of the drive chassis.

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LOAD UNLOAD Command (1Bh) SDLT 600 Fibre Channel Interface Guide

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3.5 LOAD UNLOAD Command (1Bh)

The LOAD UNLOAD command instructs the SDLT tape drive to load or unload the tape inside the data cartridge. If no data cartridge is in the drive, the LOAD UNLOAD command returns a CHECK CONDITION status with the Sense Key set to NOT READY. Likewise, if the drive receives a LOAD UNLOAD command with the Immediate bit set and then it receives another command that requires tape motion or if it receives a TEST UNIT READY command, the drive returns a CHECK CONDITION status with the Sense Key set to NOT READY.

Before executing the LOAD UNLOAD command, the drive writes any cached write data to the tape.

Bit

Byte

0 Operation Code (1Bh)

1 Reserved Immed

2 – 3 Reserved

4 Reserved Hold EOT ReTen Load

5 Control

7 6 5 4 3 2 1 0

Figure 3-13. LOAD UNLOAD Command Descriptor Block — Data Format

Table 3-14. LOAD UNLOAD Command Descriptor Block — Field Descriptions

Field Name Description

Immed Immediate. When set to 1, the drive returns status as soon as the operation starts.

When set to 0, the drive returns status after the operation has completed.

Hold When set to 1, indicates that Enhanced Medium Auxiliary Memory (EMAM) is

accessible upon completion of the command but the medium is not repositioned for access. When the Hold bit is set to 0 and the Load bit is set to 1, the medium is positioned for access. When both the Hold and Load bits are set to 0, EMAM is not accessible upon completion of the command.

EOT End of Tape. The drive ignores this bit unless both the EOT and Load bits are set

to 1, then the drive returns CHECK CONDITION status with Sense Key set to ILLEGAL REQUEST.

ReTen Retension. Ignored. Retension operations are not needed.

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Table 3-14. LOAD UNLOAD Command Descriptor Block — Field Descriptions (Continued)

Field Name Description

Load If the Load bit is set to 1 and the medium is already loaded, the drive writes any

cached data to the tape, rewinds the tape, and returns a GOOD status. If the drive unloaded the medium but the cartridge was not removed, a LOAD UNLOAD command causes the drive to load the tape to Beginning of Partition (BOP) again and make it ready for use.

If the Load bit is set to 0 and the medium is loaded, the drive writes any buffered data and filemarks to the tape, rewinds the tape to BOM, and unloads the medium back into the cartridge. At that point, the drive ejects the medium if not in a library. If the drive is in a library, the drive does not eject the medium, but waits for another command. If the medium is already unloaded, the drive takes no action. The drive returns a GOOD status.

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LOCATE Command (2Bh) SDLT 600 Fibre Channel Interface Guide

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3.6 LOCATE Command (2Bh)

The LOCATE command performs high-speed positioning to a specified block address. Use the READ POSITION command to obtain the block address associated with the current position on tape. Then use the LOCATE command to position the tape at the same logical position for high-performance restore operations of particular blocks of data.

Bit

Byte

0 Operation Code (2Bh)

1 Reserved BT CP Immed

2 Reserved

3 – 6

7 Reserved

8 Partition

9 Control

7 6 5 4 3 2 1 0

(MSB)

Logical Object Identifier

Figure 3-14. LOCATE Command Descriptor Block — Data Format

Table 3-15. LOCATE Command Descriptor Block — Field Descriptions

Field Name Description

(LSB)

BT Block Type. The drive ignores this bit.

CP Change Partition. The drive does not support multiple partitions.

Always set to 0.

Immed Immediate. When set to 1, the drive returns status as soon as the

operation starts. When set to 0, the drive returns status after the operation has completed.

Logical Object Identifier

Partition Not applicable; the drive ignores this bit. See CP field above.

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Specifies the Logical Object Identifier to which the drive positions the medium.

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SDLT 600 Fibre Channel Interface Guide Chapter 3: SCSI Commands

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3.7 LOG SELECT Command (4Ch)

The LOG SELECT command allows the host to manage statistical information the SDLT tape drive maintains about its own hardware parameters and about the installed tape medium. Read the description of the “LOG SENSE Command (4Dh)” on page 3-37; it provides information about log page format, parameters, and supported pages.

Bit

Byte

0 Operation Code (4Ch)

1 Reserved PCR SP

2 PC Reserved

3 – 6 Reserved

7 – 8

9 Control

7 6 5 4 3 2 1 0

(MSB)

Parameter List Length

Figure 3-15. LOG SELECT Command Descriptor Block — Data Format

(LSB)

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LOG SELECT Command (4Ch) SDLT 600 Fibre Channel Interface Guide

Table 3-16. LOG SELECT Command Descriptor Block — Field Descriptions

Field Name Description

PCR Parameter Code Reset. If this bit is set to 1 and the Parameter List Length field

is set to 0, all accumulated values of page codes 2, 3, and 32 are set to 0 and all threshold values are set to default. If PCR is set to 1 and the Parameter List Length field is set to a non-zero value, the drive terminates the command with CHECK CONDITION status, Sense Key set to ILLEGAL REQUEST, and Additional Sense Code (ASC) set to INVALID FIELD IN CDB. (See the Note under SP [Save Parameters] below.)

SP Save Parameters. When set to 1, indicates that after performing the specified

LOG SELECT operation the drive saves to nonvolatile memory all parameters identified as saveable by the DS bit in the log page. When set to 0, specifies that the drive does not save the parameters.

Note: If PCR and SP are both set to 1, the drive terminates the command with

a CHECK CONDITION status, Sense Key set to ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN CDB.

PC Page Control. Defines the type of parameter values to be selected:

Code Type of Parameter Value

00b Current Threshold Values

01b Current Cumulative Values

10b Default Threshold Values

11b Default Cumulative Values

When the PC field is set to 10b and the Parameter List Length field is set to 0, all Current Threshold Values are reset to the Default Threshold Values.

When the PC field is set to 11b and the Parameter List Length field is set to 0, all Current Cumulative Values are reset to the Default Cumulative Values. This is equivalent to clearing all log pages that can be cleared.

Note: The drive ignores the PC field value if the PCR bit is set to 1.

Parameter List Length

Specifies the length, in bytes, of the LOG SELECT parameter list to be transferred from the initiator to the drive. A Parameter List Length of 0 indicates that no data is to be transferred. This condition is not considered an error.

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3.7.1 Overview: LOG SELECT Command Descriptor Block Errors

The following conditions constitute errors that the drive detects in relation to the CDB. The Request Sense Data is set to CDB.

The conditions that constitute errors are:

• PCR bit is set to 1 and Parameter List Length field is not set to 0.

• Both the PCR and SP bits are set to 1.

• A Parameter List Length that would cause a parameter within a valid page to be truncated or

otherwise incompletely initialized.

3.7.2 Operation of LOG SELECT

The LOG SELECT command allows the initiator to modify and initialize parameters within the logs the drive supports.

The two ways to initialize the log parameters are:

1. Set the PCR bit to 1 in the LOG SELECT CDB; this clears all parameters.

2. Specify the log page and parameter values as the log parameters to clear individual pages. The

following pages can be cleared using this method:

Table 3-17. LOG SELECT Page-clearing Codes

Page Code Page Description

02h Write Error Count Page

03h Read Error Count Page

32h Compression Ratio Page

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3.7.3 LOG SELECT Log Page Format

Each log page begins with a 4-byte header followed by n number of log parameter blocks—one block for each parameter code. Each block, except for parameter code 05h, comprises 8 bytes. The parameter block for page code 05h is 12 bytes.

Bit

Byte

0 Page Code

1 Reserved

2 – 3

4 Log Parameter (First)

x + 3 Length (x)

n – y + 1 Log Parameter (Last)

n Length (y)

7 6 5 4 3 2 1 0

(MSB)

Page Length (n – 3)

Log Parameters

. .

Figure 3-16. LOG SELECT Log Page — Data Format

(LSB)

Table 3-18. LOG SELECT Log Page Header — Field Descriptions

Field Name Description

Page Code Specifies the log page to which this LOG SELECT command is directed.

Page Length Specifies the total number of bytes contained in this log page, not including the

4 bytes that make up the header.

Log Parameters

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Use one block for each parameter code.

SDLT 600 Fibre Channel Interface Guide Chapter 3: SCSI Commands

Bit

Byte

7 6 5 4 3 2 1 0

(MSB)

0 – 1

DU DS TSD ETC TMC LBIN LP

Parameter Code

3 Parameter Length (n – 3)

(MSB)

4 – n

1. The byte 2 fields are collectively referred to as the Parameter Control byte.

Parameter Value

Figure 3-17. LOG SELECT Log Page — Parameters Format

Table 3-19. LOG SELECT Log Parameters — Field Descriptions

Field Name Description

(LSB)

Parameter Code Parameter codes supported for the READ / WRITE error counter pages are

as follows:

Code Description

0000h Errors corrected without substantial delays

0001h Errors corrected with possible delays

0002h Total read / write errors

0003h Total read / write errors

0004h Total times correction algorithm processed. Always 0 for write

errors only.

0005h Total bytes processed

0006h Total uncorrected errors

8000h WRITE errors since last READ (page 02) or

READ errors since last WRITE (page 03)

8001h Total raw write error flags

8002h Total dropout error count

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Table 3-19. LOG SELECT Log Parameters — Field Descriptions (Continued)

Field Name Description

8003h Total servo tracking errors

9000h-

Without substantial delay errors by channel

9007h

9080h9087h

Write only: Possible delay errors assignable to specific channels

Read only: Raw sub-block read errors by channel

Note: Many of these errors are write, not read, errors and are

not to be included in read error-rate calculations. If these errors are used to try to identify bad channels, the bad channel may be on either the writing or reading drive.

Note: Parameter codes 00h, 01h, and 04h always have a value of 0.

Parameter value for 05h is eight bytes; the Parameter Length field is set to 8.

DU Disable Update. This bit is not defined for LOG SELECT; the drive ignores

any value in DU.

DS Disable Save. Not supported. DS and Target Save Disable (TSD) must be set

to 1. If DS or TSD or both are set to 0, the drive terminates the command with CHECK CONDITION status, Sense Key set to ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN PARAMETER LIST.

TSD Target Save Disable. Not supported. TSD and DS must be set to 1. If TSD or

DS or both are set to 0, the drive terminates the command with CHECK CONDITION status, Sense Key set to ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN PARAMETER LIST.

ETC Enable Threshold Comparison. When set to 1, the drive performs a

comparison with threshold values once the cumulative value is updated. Comparison criteria are defined in Threshold Met Criteria (TMC). If the comparison is met and the RLEC bit of MODE SELECT / SENSE Control Page 0Ah is set to 1, the drive generates a UNIT ATTENTION for all initiators. The drive sets the Additional Sense Code to THRESHOLD CONDITION MET. If the RLEC bit is 0 and the comparison is met, the drive does not generate a UNIT ATTENTION.

TMC Threshold Met Criteria. Once the criteria specified in this field are met, the

ETC bit is 1, and the RLEC bit in the MODE SENSE / SELECT Control Page is set to 1, the drive generates a UNIT ATTENTION for all initiators.

The criteria for comparison are:

Code Basis of Comparison

00b Every update of the cumulative value

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Table 3-19. LOG SELECT Log Parameters — Field Descriptions (Continued)

Field Name Description

01b Cumulative value equal to threshold value

10b Cumulative value not equal to threshold value

11b Cumulative value greater than threshold value

• The Default Threshold Values are the maximum values that each

parameter can attain.

• The Current Cumulative Values are the values computed since the last

reset of the tape drive by power-cycle, or FCP target reset.

• The Default Cumulative Values are the values to which each parameter

is initialized at a reset condition. Default value is 0.

• By default, Current Threshold Values are set to Default Threshold

Val ue s.

Note that all types of parameter values are changeable using LOG SELECT.

LBIN List Binary. Not used.

LP List Parameter. Always set this bit to 0 to indicate that parameter codes are

treated as data counters.

Parameter Length

Parameter Value Indicates the actual value of this log parameter.

Specifies the number of bytes in the parameter value.

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3.7.4 Error Detection Summary in LOG SELECT Pages

The host issues a LOG SENSE command to initialize host-resident software that allows determination of:

• The log pages the drive uses

• The parameter codes and length of each parameter.

The following conditions constitute errors in the parameter block that cause the drive to return CHECK CONDITION status with Sense Data set to ILLEGAL REQUEST and Additional Sense Code set to INVALID FIELD IN PARAMETER LIST:

• The drive receives a page header with unsupported page codes.

• An incorrect log page length is specified in the page header.

• An illegal parameter code is contained in a valid page code.

• Parameter codes for a supported page are not sent in ascending order.

• The LP bit is set to 1 in the parameter control byte.

• The DS bit is set to 0 in the parameter control byte.

• The TSD bit is set to 0 in the parameter control byte.

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3.8 LOG SENSE Command (4Dh)

The LOG SENSE command allows the host to retrieve statistical information the SDLT tape drive maintains about its own hardware parameters or about the installed tape medium. This command complements the LOG SELECT command.

Bit

Byte

0 Operation Code (4Dh)

1 Reserved PPC SP (0)

2 PC Page Code

3 – 4 Reserved

5 – 6

7 – 8

9 Control

7 6 5 4 3 2 1 0

(MSB)

Parameter Pointer

(MSB)

Allocation Length

Figure 3-18. LOG SENSE Command Descriptor Block — Data Format

(LSB)

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LOG SENSE Command (4Dh) SDLT 600 Fibre Channel Interface Guide

Table 3-20. LOG SENSE Command Descriptor Block — Field Descriptions

Field Name Description

PPC Parameter Pointer Control. When set to 0, indicates that the parameter data

requested from the drive starts with the parameter code specified in the Parameter Pointer field (bytes 5 – 6) and returns the number of bytes specified in the Allocation Length field (bytes 7 – 8) in ascending order of parameter codes from the specified log page. When set to 1, the drive returns only the parameters that have changed since the last time the page was read.

SP Save Parameters. Not supported. Must be set to 0. If the Save Parameters bit is

set to 1, the drive terminates the command with CHECK CONDITION status, Sense Key set to ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN CDB.

PC Page Control. This field defines the type of parameter values to be returned:

Code Type of Parameter Values

00b Threshold Values

01b Cumulative Values

10b Default Threshold Values

11b Default Cumulative Values

• The Default Threshold Values are the maximum values that each parameter

can attain.

• The Current Cumulative values are the values computed since the last reset

of the drive by power-cycle, or FCP target reset.

• The Default Cumulative values are the values to which each parameter is

initialized at a reset condition. Default values are 0.

• By default, Current Threshold Values are set to Default Threshold Values.

Page Code The Page Code field identifies the log page the initiator requested. If the drive

does not support the specified page, the drive terminates the command with CHECK CONDITION status, Sense Key set to ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN CDB. The drive supports the following pages:

Page Code

00h Supported Pages Log Page Page 3-40

02h Write Error Log Page Page 3-41

Page Definition

03h Read Error Log Page Page 3-41

07h Last n Error Events Log Page Page 3-45

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Table 3-20. LOG SENSE Command Descriptor Block — Field Descriptions (Continued)

Field Name Description

0Ch Sequential Access Device Log Page Page 3-47

0Dh Temperature Log Page Page 3-49

2Eh TapeAlert Log Page Page 3-51

32h Read / Write Compression Ratio Log Page Page 3-55

33h Device Wellness Log Page Page 3-59

3Eh Device Status Log Page Page 3-62

Parameter Pointer

Allocation Length

The Parameter Pointer field allows the host to specify at which parameter within a log page the requested data should begin. For example, if a page supports parameters 0 through 5, and the Parameter Pointer contains 3, the drive returns only parameters 3, 4, and 5 to the host. Similarly, if a page supports parameters 1, 3, and 6, and the Parameter Pointer contains 2, the drive returns only parameters 3 and 6 to the host.

If the Parameter Pointer is larger than the highest numbered parameter on the page, the drive terminates the command with CHECK CONDITION status, Sense Key set to ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN CDB.

Note that the drive always returns parameters within a page in ascending order according to the parameter code.

If the drive does not support a parameter code within a page, it does not return any data associated with that parameter.

Specifies the maximum number of bytes that the host allocated for returning data. The host uses this field to limit the size of data transfers to its own internal buffer size.

3.8.1 Error Summary in LOG SENSE Command Descriptor Block

The following conditions constitute errors the drive detects relating to the LOG SENSE CDB. The drive terminates the command with CHECK CONDITION status, Sense Key set to ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN CDB.

Error conditions occur when:

• The drive does not support the requested page.

• The parameter pointer is larger than the highest numbered parameter on the page.

• The SP bit is set to 1.

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3.8.2 Supported Pages Log Page (Page 00h)

When the host requests Page 00h, the drive returns the 4-byte page header followed by the pages supported in ascending order, one byte for each.

Bit

Byte

0 Page Code (00h)

1 Reserved

2 – 3

4 Supported Pages Log Page (00h)

5 Write Error Log Page (02h)

6 Read Error Log Page (03h)

7 Last n Error Events Log Page (07h)

8 Sequential Access Device Log Page (0Ch)

9 Temperature Log Page (0Dh)

10 TapeAlert Log Page (2Eh)

11 Read / Write Compression Ratio Log Page (32h)

12 Device Wellness Log Page (33h)

7 6 5 4 3 2 1 0

(MSB)

Page Length (0Ah)

(LSB)

13 Device Status Log Page (3Eh)

Figure 3-19. Supported Pages LOG SENSE Page — Data Format

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3.8.3 Read (Page 03h) / Write (Page 02h) Error Log Page

Each log page begins with a 4-byte header followed by a number of log parameters.

Bit

Byte

0 Page Code

1 Reserved

2 – 3

7 6 5 4 3 2 1 0

(MSB)

Page Length

Figure 3-20. Read / Write Error LOG SENSE Page — Header Format

Table 3-21. Read / Write Error LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Page Length Specifies the total number of bytes contained in this log page, excluding the

4 bytes that make up the header.

(LSB)

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LOG SENSE Command (4Dh) SDLT 600 Fibre Channel Interface Guide

Bit

Byte

7 6 5 4 3 2 1 0

(MSB)

0 –1

DU DS TSD ETC TMC LBIN LP

Parameter Code

3 Parameter Length

(MSB)

4 – n

1. The byte 2 fields are collectively referred to as the Parameter Control byte.

Parameter Value

Figure 3-21. Log Parameters Format for Read / Write Error LOG SENSE Page

Table 3-22. Log Parameters for Read / Write Error LOG SENSE Page —

Field Descriptions

Field Name Description

(LSB)

Parameter Code Parameter codes supported for the READ / WRITE error counter pages

are as follows:

Code Description

0000h Errors corrected without substantial delays

0001h Errors corrected with possible delays

0002h Total read / write errors

0003h Total read / write errors

0004h Total times correction algorithm processed. Always 0 for

write errors only.

0005h Total bytes processed

0006h Total uncorrected errors

8000h WRITE errors since last READ (page 02h) or

READ errors since last WRITE (page 03h)

8001h Total raw write error flags

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Table 3-22. Log Parameters for Read / Write Error LOG SENSE Page —

Field Descriptions (Continued)

Field Name Description

8002h Total dropout error count

8003h Total servo tracking errors

9000h-

Without substantial delay errors by channel

9007h

9080h9087h

Write only: Possible delay errors assignable to specific channels

Read only: Raw sub-block read errors by channel

Note: Many of these errors are write, not read, errors and

are not to be included in read error-rate calculations. If these errors are used to try to identify bad channels, the bad channel may be on either the writing or reading drive.

Note: Parameter codes 00h, 01h, and 04h always return a value of 0.

DU Disable Update. When set to 0, indicates that the drive updates all log

parameter values. When set to 1, indicates that the drive does not update the log parameter values except in response to a LOG SELECT command. The drive sets this bit to 1 when accumulated values reach maximum. The drive also returns this bit set to 1 if the host set the bit in the last LOG SELECT command. Default is 0.

Note that for parameter types other than threshold and cumulative values, this bit is always set to 0.

DS Disable Save. Not supported. Always set to 1.

TSD Target Save Disable. Not supported. Always set to 1.

ETC Enable Threshold Comparison. When set to 1, indicates that the drive

performs comparison to threshold. When set to 0, indicates that the drive does not perform the comparison. The Control Mode Page of the MODE SELECT command sets this bit set to 1. Default is 0.

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Table 3-22. Log Parameters for Read / Write Error LOG SENSE Page —

Field Descriptions (Continued)

Field Name Description

TMC Threshold Met Criteria. This field is valid only if the host sets the ETC bit

to 1. This field determines the basis for comparison. The host specifies this field using the LOG SELECT command. If the result of comparison is true (cumulative = threshold) and the MODE SELECT / SENSE Control Mode Page RLEC bit is set to 1, the drive generates a UNIT ATTENTION for all initiators. In that case, the drive sets the Sense Key to UNIT ATTENTION, the Additional Sense Code to LOG EXCEPTION, and the Additional Sense Code Qualifier to THRESHOLD CONDITION MET. If the RLEC bit in Control Mode Page is 0, the drive does not generate a UNIT ATTENTION.

Note that comparison is performed in real time. A LOG SENSE command need not be issued to get the CHECK CONDITION status. Once ETC is selected and the RLEC bit in Control Mode Page is set to 1, the drive issues a CHECK CONDITION status based on the criteria defined in the TMC bits if the criteria is met in real time. The CHECK CONDITION status does not identify for which parameter code the criterion is met. The host must issue a LOG SENSE command to read the counters to determine for which parameter code the criterion has been met.

The criteria for comparison are:

Code Basis of Comparison

00b Every update of the cumulative value

01b Cumulative value equal to threshold value

10b Cumulative value not equal to threshold value

11b Cumulative value greater than threshold value

LBIN List Binary. Not used.

LP List Parameter. The drive treats the parameter codes as data counters.

Always set to 0.

Parameter Length Specifies the number of bytes in the parameter value. All parameters are 4

bytes in length except parameter 0005h, which is 8 bytes in length.

Parameter Value Indicates the actual value of this log parameter.

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3.8.4 LAST n ERROR EVENTS Log Page (07h)

This page returns one parameter at a time that contains the ASCII text for the specified event log. The Parameter Number field in the CDB specifies the log event to return. The log events in EEPROM are numbered from 0 to 255, after which the number wraps back to 0. A maximum of 32 events are stored at a given time. The log event returned is the first one whose parameter code is equal to or greater than the parameter number specified in the CDB.

Bit

Byte

0 Page Code (07h)

1 Reserved

2 – 3

7 6 5 4 3 2 1 0

(MSB)

Page Length

Figure 3-22. Last n Error Events LOG SENSE Page — Header Format

(LSB)

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Table 3-23. Last n Error Events LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Page Length Specifies the total number of bytes contained in this log page, excluding

the 4 bytes that make up the header.

Bit

Byte

7 6 5 4 3 2 1 0

(MSB)

0 – 1

Parameter Code

(LSB)

DU DS TSD ETC TMC LBIN LP

3 Parameter Length

(MSB)

4 – n

ASCII String for Event n

(LSB)

1. The byte 2 fields are collectively referred to as the Parameter Control Byte. For definitions of the bits that compose the Control Byte (the byte 2 in the above figure), refer to “Read (Page 03h) / Write (Page 02h) Error

Log Page” on page 3-41.

Figure 3-23. Log Parameters Format for Last n Error Events LOG SENSE Page

Table 3-24. Log Parameters for Last n Error Events LOG SENSE Page — Field Descriptions

Field Name Description

Parameter Code Parameter Code values are assigned from 0 to 63 (decimal), where 0 is

the oldest event stored and the highest Parameter Code returned is the most recent event.

ASCII String for Event n

The text of the parameter includes a “Packet #” that is a value from 0 to

255. The drive assigns this internal number when the packet is written to EEPROM. A value of 0 is normally the oldest packet, but packet numbers wrap back to 0 after reaching 255.

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3.8.5 Sequential Access Device Log Page (0Ch)

This page provides a standardized way to report the amount of data transferred between the tape drive and the host.

Bit

Byte

0 Page Code (0Ch)

1 Reserved

2 – 3

7 6 5 4 3 2 1 0

(MSB)

Page Length

Figure 3-24. Sequential Access Device LOG SENSE Page — Header Format

Table 3-25. Sequential Access Device LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Page Length Specifies the total number of bytes contained in this log page, excluding

the 4 bytes that make up the header.

(LSB)

Bit

Byte

0 – 1

3 Parameter Length

4 – 11 Parameter Value

1. The byte 2 fields are collectively referred to as the Parameter Control Byte.

7 6 5 4 3 2 1 0

(MSB)

Parameter Code

(LSB)

DU DS TSD ETC TMC Rsv’d LP

Figure 3-25. Log Parameters Format for Sequential Access Device LOG SENSE Page

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Table 3-26. Sequential Access Device LOG SENSE Page Parameters — Field Descriptions

Field Name Description

Parameter Code Parameter codes supported for the Sequential Access Device Page are as follows:

Code Description

0000h Host Write Byte Count. This is the number of data bytes received

from application clients during WRITE command operations.

0001h Tape Write Byte Count. The number of data bytes written to the

media during WRITE command operations, not counting ECC and formatting overhead.

0002h Tape Read Byte Count. The number of data bytes read from the

media during READ command operations, not counting ECC and formatting overhead.

0003h Host Read Byte Count. The number of data bytes transferred to the

initiator(s) during READ command operations.

DU Disable Update. Always set to 0.

DS Disable Save. Not supported. Always set to 1.

TSD Target Save Disable. Not supported. Always set to 1.

ETC Enable Threshold Comparison. Threshold checking is not supported on this page.

Always set to 0.

TMC Threshold Met Criteria. Ignored. Always set to 0.

LP List Parameter. The drive treats the parameter codes as data counters. Always set

to 1.

Parameter Length

Specifies the number of bytes in the parameter value. All parameters are 8 bytes in length.

Parameter Value Indicates the actual value of this log parameter.

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3.8.6 Temperature Log Page (0Dh)

This page provides a standardized way to report the device temperature.

Bit

Byte

0 Page Code (0Dh)

1 Reserved

2 – 3

7 6 5 4 3 2 1 0

(MSB)

Page Length

Figure 3-26. Temperature LOG SENSE Page — Header Format

Table 3-27. Temperature LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Page Length Specifies the number of bytes available and depends on the parameters

requested.

(LSB)

Bit

Byte

0 – 1

2 DU DS TSD ETC TMC LBIN LP

3 Parameter Length (02h)

4 – 5

7 6 5 4 3 2 1 0

(MSB)

Parameter Code (Temperature)

(LSB)

(MSB)

Parameter Value

(LSB)

Figure 3-27. Log Parameters Format for Temperature Page

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Table 3-28. Temperature LOG SENSE Parameters — Field Descriptions

Field Name Description

Parameter Code Parameter codes supported for the Temperature page are as follows:

Code Description

0000h Current operating temperature (degrees Celsius).

0001h Reference temperature (degrees Celsius). This is the maximum

reported sensor temperature at which the tape drive is capable of operating continuously without experiencing degradation beyond the limits, specified in the Product Manual for this product.

DU Disable Update. Always set to 0.

DS Disable Save. Not supported. Always set to 1.

TSD Target Save Disable. Not supported. Always set to 0.

ETC Enable Threshold Comparison. Threshold checking is not supported on this page.

Always set to 0.

TMC Threshold Met Criteria. Ignored. Always set to 0.

LBIN List Binary. Always set to 1.

LP List Parameter. The drive treats the parameter codes as data counters. Always set

to 1.

Parameter Length

Specifies the number of bytes in the parameter value. All parameters are 2 bytes in length.

Parameter Value Indicates the actual value of this log parameter.

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3.8.7 TapeAlert Log Page (2Eh)

This page returns results of the SDLT tape drive’s ongoing self-diagnosis, so that the drive’s behavior can be monitored and high reliability assured. The host typically reads the TapeAlert page from the drive at the beginning of each READ or WRITE activity, after any fatal errors occur during a READ or WRITE, at the end of any data cartridge when the READ or WRITE activity continues onto another data cartridge, and at the end of each READ or WRITE activity. The drive sets or clears the flags when the failure or corrective action occurs.

Bit

Byte

0 Page Code (2Eh)

1 Reserved

2 – 3

7 6 5 4 3 2 1 0

(MSB)

Page Length

Figure 3-28. TapeAlert LOG SENSE Page — Header Format

Table 3-29. TapeAlert Page LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Page Length Specifies the total number of bytes contained in this log page, excluding the

4 bytes that make up the header.

(LSB)

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Bit

Byte

7 6 5 4 3 2 1 0

(MSB)

0 – 1

DU DS TSD ETC TMC LBIN LP

Parameter Code

3 Parameter Length (1)

4 Value of TapeAlert Flag (Flag is set when bit 0 is set to 1; bits 1–7 are reserved)

1. The byte 2 fields are collectively referred to as the Parameter Control Byte.

Figure 3-29. TapeAlert LOG SENSE Page — Parameters Format

Table 3-30. TapeAlert Page LOG SENSE Parameters — Field Descriptions

Field Name Description

Parameter Code Contains the Flag code. See Table 3-31 on page 3-53 for the

supported flags, level of severity, and the flag definitions.

(LSB)

Parameter Length Always set to 1.

Value of TapeAlert Flag If bit 0 is set to 1, indicates that TapeAlert has sensed a problem. See

Table 3-31 on page 3-53 for the supported flags and their definitions.

If bit 0 is set to 0, indicates that TapeAlert did not sense a problem and therefore did not set the flag.

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Table 3-31. TapeAlert Flags, Severity Levels, and Meanings

Severity

Flag

1 Read Warning Warning Problems reading data. There is no loss of data, but the

2 Write Warning Warning Problems writing data. There is no loss of data, but the

3 Hard Error Warning An error occurred during a read or write operation that

4 Media Critical Your data is at risk. Copy all important data from this

5 Read Failure Critical The data cartridge or the tape drive is damaged.

Level

Meaning

tape drive’s performance is reduced.

capacity of the tape is reduced.

the drive cannot correct: the operation has stopped.

data cartridge. Do not use the data cartridge again. Restart the operation using a different data cartridge.

Contact a service representative.

6 Write Failure Critical The tape medium is faulty or the drive is damaged.

Test the drive using a known-good data cartridge. If the problem persists, contact a service representative.

7 Media Life Warning The data cartridge has reached the end of its useful

life. Copy all important data to another data cartridge and discard the old data cartridge.

9 Write Protect Critical The data cartridge is write-protected. Set the write-

protection switch to enable writing or use a different data cartridge.

10 No Removal Informational The drive is busy and the data cartridge cannot be

ejected. Wait for the operation to complete before attempting to eject the data cartridge.

11 Cleaning Media

Informational The data cartridge in the drive is a cleaning cartridge.

For normal drive data-related operations, replace the cleaning cartridge with a data cartridge.

17 Read Only Format

19 Nearing Media Life

Warning The type of tape currently loaded into the drive is Read

Only on the SDLT tape drive.

Warning The data cartridge is nearing the end of its useful life.

You should use another data cartridge for your next backup. Store this data cartridge in a safe place in case you need to restore data from it.

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Table 3-31. TapeAlert Flags, Severity Levels, and Meanings (Continued)

Severity

Flag

20 Clean Now Critical The drive needs to be cleaned. Make sure that all tape

Level

Meaning

operations have completed, eject the data cartridge and follow the appropriate steps to use a cleaning cartridge.

For detailed instructions about how to clean the tape drive using a cleaning cartridge, refer to the User Reference Guide for this product.

22 Expired Cleaning Media

Critical The cleaning cartridge in use has expired. Wait for all

tape drive operations to complete, then use a valid cleaning cartridge.

31 Hardware B Critical The drive may have a hardware fault. Contact a

service representative.

32 Interface Warning The drive has identified a problem with the interface to

or from the host.

34 Download Fail Warning The attempted firmware download failed.

36 Drive Temperature

Warning The temperature inside the drive exceeds the allowable

specifications.

Note: The drive issues this warning 3 degrees C

below the maximum temperature threshold so that you can provide additional cooling before potential damage occurs.

38 Predictive Failure

Critical A hardware failure of the drive is predicted. Call the

tape drive supplier help line to arrange for a replacement.

51 Tape Directory Invalid at Unload

1. Severity levels are Informational, Wa r n i n g , and Critical. Informational flags provide a status-type message, Warning flags indicate that there is the possibility of loss of data, and Critical flags indicate the possibility of loss of data and that user intervention, a service call, or both may be required.

Warning A WRITE error prevented the directory from being

updated when the drive unloaded the tape.

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3.8.8 Read / Write Compression Log Page (32h)

This page begins with a 4-byte header followed by the log parameter blocks of 6 or 8 bytes, depending on the parameter code selected.

Bit

Byte

0 Page Code (32h)

1 Reserved

2 – 3

7 6 5 4 3 2 1 0

(MSB)

Additional Length

Figure 3-30. Read / Write Compression Ratio LOG SENSE Page — Header Format

Table 3-32. Read / Write Compression Ratio LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Additional Length Specifies the number of bytes available and depends on the parameters

requested.

(LSB)

Bit

Byte

0 –1

2 DU DS TSD ETC TMC LBIN LP

3 Parameter Length (02h)

4 – 5

7 6 5 4 3 2 1 0

(MSB)

Parameter Code

(LSB)

(MSB)

Compression Ratio x 100

(LSB)

Figure 3-31. Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page

(Parameter Codes 00h and 01h)

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Table 3-33. Log Parameters for Read / Write Compression Ratio LOG SENSE Page — Field

Descriptions (Parameter Codes 00h and 01h)

Field Name Description

Parameter Code

DU Disable Update. Always set to 0.

DS Disable Save. Not supported. Always set to 1.

TSD Target Save Disable. Not supported. Always set to 1.

ETC Enable Threshold Comparison. Not supported. Always set to 0.

TMC Threshold Met Criteria. Always set to 0.

LBIN List Binary. Not used.

LP List Parameter. The drive treats the parameter codes as data counters. Always

Parameter codes supported for the Read / Write Compression Ratio Page are as follows (for codes 00h and 01h only; codes 02h through 09h are detailed separately):

Code Description

00h READ Compression Ratio x 100

01h WRITE Compression Ratio x 100

set to 0.

Bit

Byte

0 – 1

2 DU DS TSD ETC TMC LBIN LP

3 Parameter Length (04h)

4 – 7

7 6 5 4 3 2 1 0

(MSB)

Parameter Code

(LSB)

(MSB)

Counter Value

(LSB)

Figure 3-32. Log Parameters Format for Read / Write Compression Ratio LOG SENSE Page

(Parameter Codes 02h through 09h)

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Table 3-34. Log Parameters for Read / Write Compression Ratio LOG SENSE Page — Field

Descriptions (Parameter Codes 02h through 09h)

Field Name Description

Parameter Code Parameter codes supported for the Read / Write Compression Ratio Page

(codes 02h through 09h) are as follows:

Code Description

02h MB Transferred to Host

03h Bytes Transferred to Host

04h MB Read from Tape

05h Bytes Read from Tape

06h MB Transferred from Host

07h Bytes Transferred from Host

08h MB Written to Tape

09h Bytes Written to Tape

DU Disable Update. Always set to 0.

DS Disable Save. Not supported. Always set to 1.

TSD Target Save Disable. Not supported. Always set to 1.

ETC Enable Threshold Comparison. Not supported. Always set to 0.

TMC Threshold Met Criteria. Always set to 0.

LBIN List Binary. Not used.

LP List Parameter. The drive treats the parameter codes as data counters.

Always set to 0.

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Table 3-34. Log Parameters for Read / Write Compression Ratio LOG SENSE Page — Field

Descriptions (Parameter Codes 02h through 09h) (Continued)

Field Name Description

Counter Value Parameter codes 02h through 09h provide a count of the number of bytes

transferred since the last time the counters were reset with a LOG SELECT command or reset condition.

Parameter Codes 02h and 03h the drive to the initiator. Parameter code 02h reports the number of full megabytes transferred; parameter code 03h reports the number of bytes less than a full megabyte transferred. Multiplying the counter returned for parameter code 02h by 1,048,576 and then adding the value of the counter returned by parameter code 03h results in the actual total bytes transferred to the initiator.

Parameter Codes 04h and 05h the drive to the buffer. Parameter code 04h reports the number of full megabytes transferred; parameter code 05h reports the number of bytes less than a full megabyte that have been transferred. Multiplying the counter returned for parameter code 04h by 1,048,576 and then adding the value of the counter returned by parameter code 05h results in the actual total bytes transferred from tape to the buffer.

Parameter Codes 06h and 07h the initiator to the buffer. Parameter code 06h reports the number of full megabytes transferred; parameter code 07h reports the number of bytes less than a full megabyte that have been transferred. Multiplying the counter returned for parameter code 06h by 1,048,576 and then adding the value of the counter returned by parameter code 07h results in the actual total bytes transferred from the initiator to the buffer.

Parameter Codes 08h and 09h drive. Parameter code 08h reports the number of full megabytes transferred; parameter code 09h reports the number of bytes less than a full megabyte that have been transferred. Multiplying the counter returned for parameter code 08h by 1,048,576 and then adding the value of the counter returned by parameter code 09h results in the actual total bytes written to the drive.

— Report the count of bytes transferred from

— Report the count of bytes written to the

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3.8.9 Device Wellness Log Page (33h)

The Device Wellness Page returns information about any CHECK CONDITION status related to Sense Keys 03h, 04h, 09h, and 0Bh that the SDLT tape drive has logged. This page can contain up to 16 entries (parameter code 0000h to 000Fh). Note that parameter code 0000h contains the oldest log information while parameter code 000Fh contains the most recent log information.

This page begins with a 4-byte header followed by the log parameter blocks, as shown in Figure 3-33.

Bit

Byte

0 Page Code (33h)

1 Reserved

2 – 3

7 6 5 4 3 2 1 0

(MSB)

Page Length

Figure 3-33. Device Wellness LOG SENSE Page — Header Format

Table 3-35. Device Wellness LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Page Length Specifies the number of bytes available and depends on the parameters

requested.

(LSB)

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Bit

Byte

7 6 5 4 3 2 1 0

0 – 1 Parameter Code

2 DU DS TSD ETC TMC LBIN LP

3 Parameter Length (0Ch)

(MSB)

4 – 7

Time Stamp

(LSB)

(MSB)

8 – 11

Media ID

(LSB)

12 Sense Key

13 Additional Sense Code

14 Additional Sense Code Qualifier

15 Additional Error Information

Figure 3-34. Log Parameters Format for Device Wellness LOG SENSE Page (Parameter Codes

0000h – 000Fh)

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Table 3-36. Log Parameters for Device Wellness LOG SENSE Page — Field Descriptions

Field Name Description

Parameter Code Parameter codes 0000h through 000Fh are supported, providing 16 log

entries for error information capture.

DU Disable Update. Always set to 0.

DS Disable Save. Not supported. Always set to 1.

TSD Target Save Disable. Not supported. Always set to 1.

ETC Enable Threshold Comparison. Not supported. Always set to 0.

TMC Threshold Met Criteria. Always set to 0.

LBIN List Binary. Not used.

LP List Parameter. When set to 0, indicates that the parameter is a data

counter. Data counters are associated with one or more events. The tape drive updates the data counter whenever one of these events occurs by incrementing the counter value. When a data counter reaches its maximum value, the drive does not increment it further. If a data counter is at or reaches its maximum value during the successful execution of a command and if the RLEC bit on the Control Mode page is set to 1, the drive terminates the command with a CHECK CONDITION status, Sense Key set to RECOVERED ERROR, and Additional Sense Code set to LOG COUNTER AT MAXIMUM.

When set to 1, indicates that the parameter is a list parameter.

Time Stamp Power-on hours when CHECK CONDITION status occurred. This is the

number of power-on hours since the last time the drive was powered on, not total number of hours during the lifetime of the drive.

The time stamp counter is updated once per hour. If the drive is powered down before the hourly update occurs, the update does not occur until a full hour after power is re-applied.

Media ID Internal media identifier being used when CHECK CONDITION status

occurred. A value of 0 indicates no media or unknown media when the event occurred. Note that this is not a legitimate method of tracing media.

Sense Key The Sense Keys are described in Table 3-126 on page 3-215.

Additional

The Additional Sense Codes are described in Table 3-127 on page 3-216.

Sense Code

Additional Sense Code Qualifier

Additional Error

The Additional Sense Code Qualifiers are described in Table 3-127 on

page 3-216.

Not used.

Information

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3.8.10 Device Status Log Page (3Eh)

This page describes the current status of the drive.

Bit

Byte

0 Page Code (3Eh)

1 Reserved

2 – 3

7 6 5 4 3 2 1 0

(MSB)

Page Length

Figure 3-35. Device Status LOG SENSE Page — Header Format

Table 3-37. Device Status LOG SENSE Header — Field Descriptions

Field Name Description

Page Code Echoes the page code specified in the LOG SENSE CDB.

Page Length Specifies the number of bytes available and depends on the parameters

requested.

(LSB)

Bit

Byte

0 – 1 Parameter Code

2 DU DS TSD ETC TMC LBIN LP

3 Parameter Length (04h)

4 – 7

7 6 5 4 3 2 1 0

(MSB)

Parameter Value

(LSB)

Figure 3-36. Log Parameters Format for Device Status LOG SENSE Page

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Table 3-38. Log Parameters for Device Status LOG SENSE Page — Field Descriptions

Field Name Description

Parameter Code Parameter codes 0000h through 000Ah are supported:

Code Description

0000h Specifies the device type. For sequential-type devices

such as tape drives, the value is always 00010000h.

0001h Specifies device cleaning-related status (see

Figure 3-37).

0002h Specifies the number of loads over the lifetime of the

drive.

0003h Specifies the number of cleaning sessions per cartridge.

0004h Vendor specific.

0005h Drive temperature in degrees C.

0006h Media ID of the most recently loaded cartridge.

0007h Controller serial number (least significant 16 bits). The

drive uses this value to generate the Media ID for blank tape cartridges.

0008h Drive cleaning cycle count.

0009h Serial number of the first drive to write the current tape.

000Ah Serial number of the last drive to write the current tape.

DU Disable Update. Always set to 0.

DS Disable Save. Not supported. Always set to 1.

TSD Target Save Disable. Not supported. Always set to 1.

ETC Enable Threshold Comparison. Not supported. Always set to 0.

TMC Threshold Met Criteria. Always set to 0.

LBIN List Binary. Not used.

LP List Parameter. The drive treats the parameter codes as data counters.

Always set to 0.

Parameter Length Specifies the number of bytes in the parameter value. All parameters are

4 bytes in length.

Parameter Value Indicates the actual value of this log parameter.

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Bit

Byte

7 6 5 4 3 2 1 0

4 Reserved ClnQ ClnR ClnEx

(MSB)

5 – 7

Reserved

(LSB)

Figure 3-37. Cleaning-Related Log Parameters Format for Device Status LOG SENSE Page

Table 3-39. Log Parameters for Device Status LOG SENSE Parameter 0001h (Cleaning-Related)

— Field Descriptions

Field Name Description

ClnQ Set to 1 if a cleaning-required condition exists. When the condition clears, the

drive also clears this bit.

ClnR Set to 1 if a cleaning-request condition exists. When the condition clears, the

drive also clears this bit.

ClnEx Set to 1 if the cleaning tape has expired. If no cleaning tape is installed, the

drive clears this bit.

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3.9 MODE SELECT (6) / (10) Command (15h / 55h)

The MODE SELECT commands enable the host to configure the SDLT tape drive. Before configuring the drive, the host should issue a MODE SENSE command to the drive to obtain a report of the current configuration and determine which parameters are configurable. The host interprets this information and then may issue MODE SELECT to set the drive to the host’s preferred configuration. The host passes the Mode Parameter List (described in “Mode Parameter List” on page 3-67) to the drive.

Operating parameters for the drive are contained in several pages. The following table lists the MODE SELECT pages supported and the location of the sections in this manual detailing each page:

Page Code Description Refer to

01h Read / Write Error Recovery Page Page 3-74

02h Disconnect / Reconnect Page Page 3-76

0Ah Control Mode Page Page 3-78

0Fh Data Compression Page Page 3-80

10h Device Configuration Page Page 3-82

11h Medium Partition Page Page 3-85

18h Fibre Channel Logical Unit Control Page Page 3-87

19h Fibre Channel Port Control Page Page 3-88

1Ch TapeAlert Page Page 3-90

25h Vendor Specific Configuration Page Page 3-93

3Ch Disaster Recovery Control Page Page 3-95

3Eh EEPROM Vendor Specific Page Page 3-96

Except for the EEPROM Vendor Specific Page (page 3Eh), the drive always powers on with its default configurations set. This is also true if the drive receives an FCP target reset.

NOTE: See “Changeable Parameters Within MODE SELECT” on page 3-103 for

a list of changeable parameters within MODE SELECT. See “EEPROM

Vendor Specific Page (3Eh)” on page 3-132 for additional information

about how to use these changeable parameters.

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Bit

Byte

0 Operation Code (15h)

1 Reserved PF Reserved SP (0)

2 – 3 Reserved

4 Parameter List Length

5 Control

7 6 5 4 3 2 1 0

Figure 3-38. MODE SELECT (6) Command Descriptor Block — Data Format

Bit

Byte

0 Operation Code (55h)

1 Reserved PF Reserved SP (0)

2 – 6 Reserved

7 – 8

7 6 5 4 3 2 1 0

(MSB)

Parameter List Length

(LSB)

9 Control

Figure 3-39. MODE SELECT (10) Command Descriptor Block — Data Format

NOTE: The drive returns a CHECK CONDITION status with Sense Key set to

ILLEGAL REQUEST if it receives an unsupported page code or a page field with values not supported or not changeable. In such cases, the drive does not change any parameters as a result of a command.

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Table 3-40. MODE SELECT (6)/(10) Command Descriptor Block — Field Descriptions

Field Name Description

PF Page Format. Indicates that the data the host sent after the MODE SELECT

header and block descriptors complies with the definition of pages in the SCSI-3 specification. If the Page Format bit is set to 0, only a Mode Parameter Header and Mode Parameter Block Descriptor can be included in the mode parameter data. If any other data is included in the mode parameter data, the drive terminates the command with CHECK CONDITION status, ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN

CDB

Sense Key set to

Save Parameters. Not supported. Must be set to 0. If set to 1, terminates the command with CHECK CONDITION status, ILLEGAL REQUEST, and Additional Sense Code set to INVALID FIELD IN

CDB

3.9.1 Mode Parameter List

Figure 3-40 shows the format of the Mode Parameter List that the host passes to the drive.

Bit

Byte

0 – 3 Mode Parameter Header

4 – 11 Mode Parameter Block Descriptor (Optional)

4 – n

12 – n

Figure 3-40. MODE SELECT (6) Mode Parameter List — Data Format

7 6 5 4 3 2 1 0

the drive

Sense Key set to

Page(s) (Optional)

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MODE SELECT (6) / (10) Command (15h / 55h) SDLT 600 Fibre Channel Interface Guide

Bit

Byte

7 6 5 4 3 2 1 0

0 – 7 Mode Parameter Header

8 – 15 Mode Parameter Block Descriptor (Optional)

8 – n

Page(s) (Optional)

16 – n

Figure 3-41. MODE SELECT (10) Mode Parameter List — Data Format

Table 3-41. MODE SELECT Mode Parameter List — Field Descriptions

Field Name Description

Mode Parameter Header

Mode Parameter Block Descriptor

Page(s) The Page Code or Codes of the pages that are a part of this MODE

Four bytes in length for MODE SELECT (6) or 8 bytes in length for MODE SELECT (10). Contains information about the remainder of the Parameter List and is always present.

Eight bytes in length. Allows the host to set the drive’s Logical Block Size and Density Code to be written from BOT.

SELECT command.

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Quantum 818120201 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Ta ble of Contents

List of Tables

List of Figures

1.1 Purpose and Scope

Introduction

1.2 Referenced Documents

1.3 Related Documents

1.4 Structure of this Manual

1.5 Conventions

1.6 For More Information

1.7 Reader Comments

Fibre Channel Protocol and SCSI

2.1 Background Information About Fibre Channel

2.1.1 Fibre Channel Interface Type

2.1.2 Relationship Between Fibre Channel and SCSI

2.1.3 World-wide Names

2.2 Implementation Details for SDLT 600 Tape Drives

2.2.1 Task Management

2.2.2 Persistent Reservations

2.2.3 Link Service and Unsolicited Control Support

Basic Link Service

Extended Link Service Commands

Extended Link Service Loop Initialization

FC-4 Link Service Commands

Unsolicited Control / Name Server Requests

SCSI Commands

3.1 Overview of SCSI Command and Status Processing

3.1.1 Unit Attention Condition

3.1.2 Behavior at Power-On

3.1.3 Data Cache and Tape Write Interaction

3.2 SCSI Command Descriptions

3.3 ERASE Command (19h)

3.4 INQUIRY Command (12h)

3.4.1 Standard Inquiry Data Page

Vendor Specific Inquiry Data Page

3.4.2 Vital Product Data Pages

Supported Vital Product Data Page (00h)

Unit Serial Number Page (80h)

Device Identification Page (83h)

Vendor-unique Logical Unit Identifier

Logical Unit NAA Identifier

Port NAA Identifier

Firmware Build Information Page (C0h)

Subsystem Components Revision Page (C1h)

3.5 LOAD UNLOAD Command (1Bh)

3.6 LOCATE Command (2Bh)

3.7 LOG SELECT Command (4Ch)

3.7.1 Overview: LOG SELECT Command Descriptor Block Errors

3.7.2 Operation of LOG SELECT

3.7.3 LOG SELECT Log Page Format

3.7.4 Error Detection Summary in LOG SELECT Pages

3.8 LOG SENSE Command (4Dh)

3.8.1 Error Summary in LOG SENSE Command Descriptor Block

3.8.2 Supported Pages Log Page (Page 00h)

3.8.3 Read (Page 03h) / Write (Page 02h) Error Log Page

3.8.4 LAST n ERROR EVENTS Log Page (07h)

3.8.5 Sequential Access Device Log Page (0Ch)

3.8.6 Temperature Log Page (0Dh)

3.8.7 TapeAlert Log Page (2Eh)

3.8.8 Read / Write Compression Log Page (32h)

3.8.9 Device Wellness Log Page (33h)

3.8.10 Device Status Log Page (3Eh)

3.9 MODE SELECT (6) / (10) Command (15h / 55h)

3.9.1 Mode Parameter List