Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
260
18.41
SET DEVICE IDENTIFIER (A4/06)
Table 243 SET DEVICE IDENTIFIER (A4/06)
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
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 Identifier 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 244 SET DEVICE IDENTIFIER, Parameter List
Byte
Bit
7 6 5 4 3 2 1 0
0-n
Identifier
The IDENTIFIER field is a vendor specific value, to be returned in subsequent REPORT DEVICE IDENTIFIER
commands.