Product manual

Barracuda 9 Product Manual, Rev. C 43
9.0 Interface requirements
This section describes Barracuda 9 interface requirements.
9.1 General description
This section partially describes the interface requirements as implemented on the drives. The major portion
of the interface requirements/implementation is described in the
SCSI Interface Product Manual , part
number 77738479. This section has tables that give the Barracuda 9 family drive’s version of the SCSI imple-
mentation described in the
SCSI Interface Product Manual .
9.2 SCSI interface messages supported
Table 6 lists the messages supported by the SCSI-2 and SCSI-3 modes of the Barracuda 9 family drives.
ASA II is Seagate’s second generation of Advanced SCSI Architecture firmware.
Notes.
[1] Extended message (refer to the
SCSI Interface Product Manual , part number 77738479).
[2] Not applicable to “N” models.
Table 6: SCSI messages supported by Barracuda 9 family drives
Message Name Message Code
Supported by
ESP SCSI-2
Abort 06h Y
Abort-tag 0Dh Y
Bus device reset 0Ch Y
Clear queue 0Eh Y
Command complete 00h Y
Continue I/O process 12h Y
Disconnect 04h Y
Extended messages 01h[1] Y
Identify 80h-FFh Y
Ignore wide residue (two bytes) 23h Y
Initiate recovery 0Fh N
Initiator detected error 05h Y
Linked command complete 0Ah Y
Linked command complete with flag 0Bh Y
Message parity error 09h Y
Message reject 07h Y
Modify data pointer [1] N
No operation 08h Y
Queue tag messages (two bytes)
Head of queue tag 21h Y
Ordered queue tag 22h Y
Simple queue tag 20h Y
Release recovery 10h N
Restore pointers 03h Y
Save data pointer 02h Y
Synchronous data transfer req. [1] Y
Target transfer disable 13h Y
Terminate I/O process 11h N
Wide data transfer request [1] [2] Y