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Concerning the format of sense data, see the "Sense Data Specifications" or for details on the
sense data hold state, see the "Command Processing Function Specifications".
If this command is executed when the IDD is holding the Unit Attention condition, at that
point, if the IDD is not in the sense data hold state, sense data showing the Unit Attention
condition are created by this command and are sent to the INIT, and the Unit Attention
condition is cleared.
If this command is issued when no valid sense data are being held, the IDD sends sense data
with a sense key which shows "NO SENSE".
The "Transfer Byte Length" field in the CDB show the number of bytes of sense data that can
be received by the INIT. The IDD transfers sense data with a length that is specified in the
"Transfer Byte Length" field or the IDD's own sense data length (48 bytes), whichever is
smaller.
When the value specified in the "Transfer Byte Length" shows 48 bytes or more, 48 bytes of
sense data are transferred and the command terminates with the "GOOD" status.
This command reports the "CHECK CONDITION" status and terminates abnormally only in
the cases where the conditions shown below are detected. In this case, new sense data are
generated and the sense data held up to that time are lost.
1) When sending of sense data is impossible due to an IDD hardware error.
2) When an irrecoverable error is detected on the FC interface.
3) If an overlapped command occurs.
In cases other than the above, this command sends sense data showing the status to the INIT
there are sense data being held or if an error is detected during execution of this command
when no sense data are being held, and it terminates with the "GOOD" Status.
However, if an error is detected which is recovered from by a retry during execution of this
command, and the mode which reports "RECOVERED ERROR" is set, after this command
sends the sense data to the INIT, it terminates with the "CHECK CONDITION" status and
sense data which show "RECOVERED ERROR" are newly generated.
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C141-E054-02EN
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