FUJITSU C150-E049-02EN - Manual (Page 82)

M3099GX/GH OEM Manual 3-49
INTERFACE
REQUEST SENSE Command (See ANSI SCSI-2 8.2.14)
The REQUEST SENSE command (Table 3.27) requests that the
target transfer sense data to the initiator.
Table 3.27 REQUEST SENSE Command
Bit
Byte
0
1
2
3
4
5
7 6 5 3 2 1 0
Operation Code (03h)
Reserved
Reserved
Allocation Length
Control
Logical Unit Number
4
Reserved
The sense data:
1) shall be available if a contingent allegiance condition exists for the
I_T_x nexus;
2) shall be available if other information is available in any field;
3) may be available if an unexpected disconnect occurred.
If the target has no other sense data available to return, it shall return
a sense key of NO SENSE and an additional sense code of NO
ADDITIONAL SENSE INFORMATION.
The sense data shall be preserved by the target for the initiator until
retrieved by a REQUEST SENSE command or until the receipt of
any other I/O process for the same I_T_x nexus. Sense data shall be
cleared upon receipt of any subsequent I/O process (including
REQUEST SENSE) to the same I_T_x nexus.
The sense data format for error code 70h(current errors) is
supported.
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