Fujitsu MAN3184 SERIES Specifications page 152

(2) COMMAND phase parity error
When the IDD detects a parity error in the COMMAND phase, it retries the Command Phase up to
3 times. If the IDD fails to recover a parity error, it proceeds to the next procedure.
If the LUN is already identified by the IDENTIFY message, the IDD terminates the command with
the CHECK CONDITION status. The sense key/sense code of the sense data indicates the
"ABORTED COMMAND [=B]/SCSI parity error [=47-00]."
If the LUN is not identified, the IDD does not generate the sense data and enters the BUS FREE
phase immediately.
(3) DATA OUT phase parity error
When the IDD detects a parity error of SCSI bus in the DATA OUT phase, it does not make retry
and proceeds to the next procedure.
The IDD terminates the currently executing command with the CHECK CONDITION status. The
sense key/sense code of the sense data indicates the "ABORTED COMMAND [=B]/SCSI parity
error [=47-00]."
(4) Receiving a INITIATOR DETECTED ERROR message
When the IDD receives an INITIATOR DETECTED ERROR message from the INIT, except for
the Data Phase and the Message Out Phase, it retries the previous phase up to 3 times. If the
recovery sequence is failed or not done, the IDD proceeds to the next procedure.
If the LUN is already identified, the IDD terminates the currently executing command with the
CHECK CONDITION status.
"ABORTED COMMAND [=B]/INITIATOR DETECTED ERROR message received [=48-00]."
If the LUN is not identified yet, the IDD does not generate the sense data and enters the BUS
FREE phase immediately. If the STATUS phase has already completed, the IDD also enters the
BUS FREE phase but does not send the status again.
(5) Receiving a MESSAGE PARITY ERROR message
If the IDD receives a MESSAGE PARITY ERROR message from the INIT as its response to the
ATTENTION condition (MESSAGE out phase) generated at the MESSAGE IN phase execution,
the IDD recognizes that there was a parity error in the previous MESSAGE IN phase. Then the
IDD performs the error recovery procedure based on the SCSI Bus protocol for the previous
MESSAGE IN phase up to 3 times. If the retry fails, the IDD enters the BUS FREE phase
immediately and terminates the executing command abnormally. The IDD does not report the
command completion (that is, the IDD does not send the status and TASK COMPLETE message)
of that command. If the LUN is identified before the error occurrence, the IDD generates the sense
data which indicates the "ABORTED COMMAND [=B]/SCSI parity error [=47-00]" sense
key/sense code. If the LUN is not identified, no sense data is generated.
If the IDD receives a MESSAGE PARITY ERROR message from the INIT as its response to that
ATTENTION condition generated at execution of other than the MESSAGE IN phase, the IDD
enters the STATUS phase immediately. If the LUN is identified before the error occurrence, the
IDD generates the sense data which indicates the "ABORTED COMMAND [=B]/Invalid message
error [=49-00]" sense key/sense code.
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The sense key/sense code of the sense data indicates the
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