User Manual

SCSI Commands Reference Manual, Rev. J 219
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
3.47 SET IDENTIFYING INFORMATION command
The SET IDENTIFYING INFORMATION command (see table 189) requests that the device server set identifying information in the
logical unit to the value received in the SET IDENTIFYING INFORMATION parameter list. The SET IDENTIFYING INFORMATION
command is an extension to the SET PERIPHERAL DEVICE/COMPONENT DEVICE IDENTIFIER service action of the MAINTENANCE
OUT command defined in SCC-2.
On successful completion of a SET IDENTIFYING INFORMATION command that changes identifying information saved by the
logical unit, the device server shall establish a unit attention condition (see SAM-5) for the initiator port associated with every I_T
nexus except the I_T nexus on which the SET IDENTIFIER command was received, with the additional sense code set to DEVICE
IDENTIFIER CHANGED.
PARAMETER LIST LENGTH field
The PARAMETER LIST LENGTH field specifies the length in bytes of the identifying information that shall be transferred from the
application client to the device server. A parameter list length of zero specifies that no data shall be transferred, and that
subsequent REPORT IDENTIFYING INFORMATION commands shall return the INFORMATION LENGTH field set to zero for the
specified information type.
Table 189 SET IDENTIFYING INFORMATION command
Bit
Byte
7 6 5 4 3 2 1 0
0
OPERATION CODE (A4h)
1
Reserved SERVICE ACTION (06h)
2
Reserved
3
4
RESTRICTED (see SSC-2)
5
6
(MSB)
PARAMETER LIST LENGTH
. . .
9
(LSB)
10
INFORMATION TYPE Reserved
11
CONTROL