Fujitsu MBA3073 SERIES Technical Manual page 196

Disk drives scsi physical interface specifications
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Rejected messages
When the HDD receives a MESSAGE REJECT message from the INIT, the HDD executes one of
the following depending on the rejected message type:
a. TASK COMPLETE
The HDD enters the BUS FREE phase immediately, and does not consider this as an error.
b. DISCONNECT
The HDD does not perform the disconnection of the SCSI bus at this time and continues the
currently executing command with keeping connection with the SCSI bus. However, the
HDD may send the DISCONNECT message to attempt to disconnect during the command
execution if the INIT indicates in the IDENTIFY message that it supports the disconnect/
reconnect function.
c. IDENTIFY
When this message sent for reconnection is rejected, the HDD immediately enters the BUS
FREE phase and terminates the command which has requested the reconnection abnormally.
No further reconnection for the command is attempted, and the HDD does not report the
command completion (status and message).
information with Sense Key/Additional Sense Code of "ABORTED COMMAND
[=B]/Message Error [=43-00]".
d. LINKED TASK COMPLETE
The HDD immediately enters the BUS FREE phase without requesting the next linked
command (CDB).
information for the INIT with Sense Key/Additional Sense Code of "ABORTED
COMMAND [=B]/Message Error [=43-00]".
e. MESSAGE REJECT
When the LUN is already identified, the HDD immediately terminates the currently executing
command with CHECK CONDITION status and with the Sense Key/Additional Sense Code
of "ABORTED COMMAND [=B]/Message Error [=43-00]".
When the LUN has not been identified, the HDD immediately enters the BUS FREE phase
without generating sense data.
f. RESTORE POINTERS
The HDD sends this message during the error recovery procedure for the COMMAND phase
or the STATUS phase. If the RESTORE POINTERS message is rejected, the HDD regards
the result of the recovery procedure as a failure.
C141-C015
The command link is broken.
At this time, the HDD creates the sense
Then, the HDD creates the sense
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