Seagate Cheetah ST3146854, User Manual

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Cheetah 15K.4 SCSI Product Manual, Rev. D 53
9.0 Interface requirements
This section partially describes the interface requirements as implemented on the drives.
9.1 General description
This section describes in essentially general terms the interface requirements supported by the Cheetah 15K.4
SCSI. No attempt is made to describe all of the minute details of conditions and constraints that must be con-
sidered by designers when designing a system in which this family of drives can properly operate. Seagate
declares that the drives operate in accordance with the appropriate ANSI Standards referenced in various
places herein, with exceptions as noted herein or in the Seagate SCSI Interface Product Manual .
9.2 SCSI interface messages supported
Table 16 lists the messages supported by the Cheetah 15K.4 SCSI family drives.
Table 16: SCSI messages supported by Cheetah 15K.4 SCSI family drives
Message name Message code
Supported by
Cheetah 15K.3
Abort 06h Y
Abort-tag 0Dh Y
Bus device reset 0Ch Y
Clear ACA 16h N
Clear queue 0Eh Y
Command complete 00h Y
Continue I/O process 12h N
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
Parallel Protocol Request [1] [2] Y
Queue tag messages (two bytes)
ACA 24h N
Head of queue tag 21h Y
Ordered queue tag 22h Y
Simple queue tag 20h Y