Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 125)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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18.2.4.5 FCP_RSP_INFO
This field contains information describing only the protocol failures detected during the execution of an IOP.
Table 96: FCP_RSP_INFO field
The content of the RSP_CODE field is defined below.
Table 97: RSP_CODE definitions
18.2.4.6 FCP_SNS_INFO
This field contains the Sense information specified by SCSI (see 22.1, “SCSI Sense Data Format”, on page 349).
FCP_SNS_INFO is only returned if the SCSI Status byte in the FCP_STATUS field is set to CHECK CONDITION status.
Refer to 18.5.3, “Autosense”, on page 113 for more details.
18.3 Task Attributes
Task Attributes are specified in the Task Codes field of the FCP_CMND IU. They apply only to the SCSI command contained
within the FCP_CDB field and are ignored if any of the Task Management function flags are set.
A task shall have one of the following attributes:
Simple Queue
This attribute specifies that the task shall be accepted into the task set and executed after tasks with the Head of
Queue attribute and tasks with the Ordered attribute that were received earlier. The order of execution, with respect to
other tasks with the Simple attribute, is determined by the Queue Algorithm currently in effect. Refer to the Queue
Algorithm Modifier field in 19.10.9, “Mode Page 0A (Control Mode Page Parameters)”, on page 186.
Head of Queue
This attribute specifies that the task shall be accepted into the task set and executed next. Successive tasks received
with Head of Queue attribute will be executed in LIFO order.
Byte Description Size (Bytes)
0-2 Reserved 3
3 RSP_CODE 1
Code Description
00h No Failure (Function Complete)
01h FCP_DATA length different from BURST_LEN
02h FCP_CMND Fields Invalid
03h FCP_DATA_RO mismatch with FCP_XFER_RDY DATA_RO
04h Function Rejected
05h Service Delivery or Target Failure
06-FFh Reserved