Filter
Top Products
6.Command Specification
SONY AIT-3Ex drive SDX-800V series Ver.1.1 6-1
6. Command Specification
This clause includes all supported. Elements of this clause come from clauses 7, 8 and 9 of the T10/1236-D
(SPC-2), T10/1416-D (SPC-3), ANSI NCITS.335:2000 (SSC), SCSI interface specification.
There are different types of SCSI commands, each with a specific, required length (in bytes.) The majority of the
commands are 6 byte Group 0 commands. Group 1 & 2 commands are 10 bytes long. Note that the drive will wait
until the required number of bytes are transferred. At the termination of each command, the target sends a status
byte to the initiator. See the clause on Status for more details. The following is a list of the supported SCSI
Commands and page index:
Table 6-1: SCSI Commands and Page Index
PARA SCSI COMMAND OP CODE PAGE
6.1 ERASE 19h 6-2
6.2 INQUIRY 12h 6-3
6.3 LOAD /UNLOAD 1Bh 6-8
6.4 LOCATE 2Bh 6-10
6.5 LOG SELECT 4Ch 6-11
6.6 LOG SENSE 4Dh 6-13
6.7 MODE SELECT (6) 15h 6-38
6.7 MODE SELECT (10) 55h 6-38
6.8 MODE SENSE (6) 1Ah 6-56
6.8 MODE SENSE (10) 5Ah 6-56
6.9 PERSISTENT RESERVE IN 5Eh 6-59
6.10 PERSISTENT RESERVE OUT 5Fh 6-62
6.11 PREVENT ALLOW MEDIUM REMOVAL 1Eh 6-64
6.12 READ 08h 6-65
6.13 READ ATTRIBUTE 8Ch 6-67
6.14 READ BLOCK LIMITS 05h 6-71
6.15 READ BUFFER 3Ch 6-72
6.16 READ POSITION 34h 6-75
6.17 RECEIVE DIAGNOSTIC RESULTS 1Ch 6-77
6.18 RELEASE UNIT (6) 17h 6-79
6.18 RELEASE UNIT (10) 57h 6-79
6.19 REPORT DENSITY SUPPORT 44h 6-81
6.20 REPORT DEVICE IDENTIFIER A3h 6-85
6.21 REPORT LUNS A0h 6-86
REQUEST BLOCK ADDRESS (obsolete)
6.22 REQUEST SENSE 03h 6-87
6.23 RESERVE UNIT (6) 16h 6-95
6.23 RESERVE UNIT (10) 56h 6-95
6.24 REWIND 01h 6-97
SEEK BLOCK (obsolete)
6.25 SEND DIAGNOSTIC 1Dh 6-98
6.26 SET DEVICE IDENTIFIER A4h 6-100
6.27 SPACE 11h 6-101
6.28 TEST UNIT READY 00h 6-104
VERIFY (obsolete)
6.29 WRITE 0Ah 6-105
6.30 WRITE ATTRIBUTE 8Dh 6-106
6.31 WRITE BUFFER 3Bh 6-108
6.32 WRITE FILEMARKS 10h 6-110
Note: In compliance with the SCSI specification, the unit will terminate the command with a CHECK CONDITION
status and the sense key will be set to ILLEGAL REQUEST when a reserved bit, byte, field or code is not ZERO.
The unit has an embedded SCSI controller interface and therefore is a single target, single logical unit device when
on the SCSI bus. The Obsolete for the drive is fixed and is set to ZERO. In order to be SCSI-2 or SCSI-3 compatible,
the following scheme is used to check the LUN:
SCSI-2 states that the LUN addressed by the host should appear in the IDENTIFY message sent to the target on
selection. LUN field inside of CDB is should be “obsolete”.