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Table of Contents
Quantum DLT 7000 Tape System
ix
Chapter 5: SCSI COMMANDS
5.1 Overview of Command and Status Processing ........................................ 5-1
5.1.1 SCSI Pointers................................................................................. 5-3
5.1.2 Command Descriptor Block ............................................................ 5-4
5.1.3 Status/Error Reporting................................................................... 5-6
5.1.4 DATA-Phase Command Components.............................................. 5-8
5.1.5 Unit Attention Condition............................................................... 5-10
5.1.6 Behavior At Power-On and SCSI Bus Reset ...................................... 5-11
5.1.7 Data Cache and Tape Write Interaction.......................................... 5-11
5.2 SCSI Command Descriptions in this Manual ............................................ 5-12
5.3 ERASE Command (19h)......................................................................... 5-15
5.4 INQUIRY Command (12h)...................................................................... 5-17
5.4.1 Standard Inquiry Data Page.......................................................... 5-18
5.4.2 Vendor Unique Inquiry Data ......................................................... 5-21
5.4.3 Supported Vital Product Data Page............................................... 5-24
5.5 LOAD UNLOAD Command (1Bh)............................................................ 5-29
5.6 LOCATE Command (2Bh)....................................................................... 5-33
5.7 LOG SELECT Command (4Ch)................................................................ 5-35
5.7.1 Log Detection Summary in LOG SELECT Command
Descriptor Block........................................................................ 5-37
5.7.2 Operation of LOG SELECT............................................................. 5-37
5.7.3 Log Select Page Format ................................................................ 5-38
5.7.4 Error Detection Summary in Log Select Pages................................ 5-41
5.8 LOG SENSE Command (4Dh)................................................................. 5-43
5.8.1.Error Detection Summary in LOG SENSE Command Descriptor Block 5-46
5.8.2 Supported Pages Log Page (Page 00h).......................................... 5-47
5.8.3 READ (03h) / WRITE (02h) Error LOG SENSE Page............................ 5-48
5.8.4 Last n Error Events Page (07h)...................................................... 5-52
5.8.5 TapeAlert Page (2Eh).................................................................... 5-54
5.8.6 Read / Write Compression Page (32h)........................................... 5-58
5.8.7 Device Wellness Page (33h)........................................................... 5-63
5.8.8 Device Status Page (3Eh).............................................................. 5-66
5.9 MODE SELECT Command (15h)............................................................. 5-69
5.9.1 Mode Parameter List..................................................................... 5-71
5.9.2 READ / WRITE Error Recovery Page (01h)........................................ 5-77
5.9.3 Disconnect / Reconnect Page (02h)............................................... 5-79
5.9.4 Control Mode Page (0Ah)............................................................ 5-82
5.9.5 Data Compression Page (0Fh)....................................................... 5-84
5.9.6 Device Configuration Page (10h)................................................... 5-86
5.9.7 Medium Partition Page (11h)........................................................ 5-89
5.9.8 TapeAlert Page (1Ch).................................................................... 5-91
5.9.9 EEPROM Vendor Unique Page (3Eh).............................................. 5-94