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6.Command Specification
6.26. SET DEVICE IDENTIFIER A4h
Bit
7
Byte
0
1
Reserved
2 – 5
6 – 9
10
11
The SET DEVICE IDENTIFIER command (Table 6-97) requests that the device identifier information in the logical
unit be set to the value received in the SET DEVICE IDENTIFIER command parameter list.
The Identifier set by an initiator may be from 0 (reset) to 64 bytes in increments of 1 byte.
The identifier is preserved over power cycles and reset events (see the REPORT DEVICE IDENTIFIER
command).
Service Action: Service Action must be 06h.
If the Service Action is not 06h, the command is terminated with a CHECK CONDITION status, the sense key is
set to ILLEGAL REQUEST, and the ASC/ASCQ is set to INVALID FIELD IN CDB.
Parameter List Length: Parameter List Length specifies the length in bytes of the Identifier that is transferred
from the application client to the logical unit. The maximum value for this field is 64 bytes; the minimum is 0.
If the parameter list length exceeds 64, the command is terminated with a CHECK CONDITION status, the sense
key is set to ILLEGAL REQUEST, and the ASC/ASCQ is set to INVALID FIELD IN CDB.
A parameter list length of ZERO indicates that no data is to be transferred, the identifier in the logical unit is to be
set to zero length, and subsequent REPORT DEVICE IDENTIFIER commands return an Identifier length of zero.
The SET DEVICE IDENTIFIER parameter list contains the identifier to be set by the logical unit (see Table 6-98).
Table 6-98: SET DEVICE IDENTIFIER Parameter List — Data Format
Bit
7
Byte
0 - <= 63
Idenfifer:The Identifier field is an initiator selected value, to be returned in subsequent valid REPORT DEVICE
IDENTIFIER commands or until reset or until replaced by another valid SET DEVICE IDENTIFIER command.
On successful completion of a SET DEVICE IDENTIFIER command a unit attention will be generated for all
initiators except the initiator that issued the SET DEVICE IDENTIFIER command with service action 06h. When
reporting the unit attention condition the additional sense code will be set to DEVICE IDENTIFIER CHANGED.
6-98
Table 6-97: SET DEVICE IDENTIFIER command
6
5
4
Operation Code (A4h)
Parameter List Length
6
5
4
SET DEVICE IDENTIFIER A4h
3
2
Service Action(06h)
Reserved
Reserved
Control
3
2
Identifier
SONY AIT-5 drive SDX-1100V series Ver.1.0
1
0
1
0
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