Reference Guide

Contents
DLT-S4 Interface Reference Guide iv
Chapter 3 Transport Layer Implementation Details 9
Parallel SCSI......................................................................................................10
SCSI Bus Reset Condition ........................................................................10
Supported Messages.................................................................................11
Supported Task Management for Information Units ..........................13
Synchronous Data Transfer Request......................................................13
Parallel Protocol Request .........................................................................15
Wide Data Transfer Request....................................................................17
Fibre Channel....................................................................................................18
Link Service and Unsolicited Control Support.....................................18
Basic Link Service......................................................................................18
Extended Link Service Commands ........................................................19
Extended Link Service Loop Initialization............................................19
FC-4 Link Service Commands.................................................................20
Unsolicited Control / Name Server Requests ......................................20
Serial Attached SCSI (SAS) .............................................................................21
Transport Layer Retries............................................................................21
Chapter 4 SCSI Commands 22
Overview of SCSI Command and Status Processing..................................23
Status and Error Reporting......................................................................24
Autosense...................................................................................................25
Unit Attention Condition.........................................................................26
Data In/Out Command Components....................................................26
Behavior at Power-On ..............................................................................29
Data Cache and Tape Write Interaction.................................................30
SCSI Command Descriptions .........................................................................31
ERASE Command (19h) ..................................................................................33
INQUIRY Command (12h) .............................................................................34
Standard Inquiry Data Page ....................................................................35
Vendor-Specific Inquiry Data Field ................................................39
Vital Product Data Pages .........................................................................41
Supported Vital Product Data Page (00h)......................................41
Unit Serial Number Page (80h) ........................................................42
Device Identification Page (83h)......................................................43
Vendor-Unique Logical Unit Identifier ..........................................44
Sequential-Access Device Capabilities VPD Page (B0h)..............49
Manufacturer-Assigned Serial Number Page (B1h) .....................50
Firmware Build Information Page (C0h)........................................51
Subsystem Components Revision Page (C1h)...............................52