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Command 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 SAS interface.
3) If an overlapped command occurs.
In cases other than the above, this command sends sense data to the INIT and
terminates with the "GOOD" Status.
4-86
C141-C009
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