Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 284)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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19.41 SET DEVICE IDENTIFIER (A4/06)
Table 228: SET DEVICE IDENTIFIER (A4/06)
The SET DEVICE IDENTIFIER command requests that the device identifier information be set to the value received in the
SET DEVICE IDENTIFIER parameter list.
On successful completion of a SET DEVICE IDENTIFIER command a unit attention is generated for all Initiators except the
one that issued the service action. When reporting the unit attention condition the additional sense code is set to Device Identi-
fier Changed.
• Parameter List Length field specifies the length in bytes of the Identifier that is transferred from the host system to
the Target. The maximum value for this field is 512 bytes. A parameter list length of zero indicates that no data is
transferred, and that 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 addressed logical unit.
Table 229: SET DEVICE IDENTIFIER, Parameter List
The IDENTIFIER field is a vendor specific value, to be returned in subsequent REPORT DEVICE IDENTIFIER commands.
Byte
Bit
7 6 5 4 3 2 1 0
0 Command Code = A4h
1 Reserved = 0 Service Action = 06h
2 Reserved = 0
3 Reserved = 0
4-5 Restricted = 0
6-9
(MSB)
Parameter List Length
(LSB)
10 Reserved = 0
11 VU = 0 Reserved = 0 FLAG LINK
Byte
Bit
7 6 5 4 3 2 1 0
0-n Identifier