Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 266)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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19.31 REPORT LUNS (A0)
Table 213: REPORT LUNS (A0)
The REPORT LUNS command requests that the Target return the known LUN to the Initiator. The REPORT LUNS command
should always be available and is unaffected by any reservations.
The Allocation Length must be at least 16 bytes. If the Allocation Length is less than 16 bytes, the Target will return a Check
Condition status with sense key of Illegal Request and additional sense code of Invalid Field in CDB. If the Allocation Length
is not sufficient to contain the LUN values for all configured logical units, the Target shall report as many LUN values as will
fit in the specified Allocation Length. This is not considered an error.
The REPORT LUNS command will send the LUN list in the subsequent Data Out Phase. The format of the LUN list is shown
in the following table.
Table 214: LUN Reporting parameter list format
The LUN list length shall contain the length in bytes of the LUN list that is available to be transferred. This product only sup-
ports one LUN. Therefore, the LUN list length must be set to 8. The only supported LUN is zero.
Byte
Bit
7 6 5 4 3 2 1 0
0 Command Code = A0h
1-5 Reserved
6-9
(MSB)
Allocation Length
(LSB)
10 Reserved
11 VU = 0 Reserved = 0 FLAG LINK
Byte
Bit
7 6 5 4 3 2 1 0
0-3
(MSB) LUN List Length = 8
(LSB)
4-7 Reserved
8-15
(MSB)
LUN = 0
(LSB)