Report Luns (A0); Table 138. Report Luns (A0); Table 139. Lun Reporting Parameter List Format - Hitachi HUS151473VL3800 - Ultrastar 73.4 GB Hard Drive Specifications

17.27 REPORT LUNS (A0)

Table 138: REPORT LUNS (A0)
Byte
7
0
1-5
(MSB)
6-9
10
11 VU = 0
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 139: LUN Reporting parameter list format
Byte
7
(MSB)
0-3
4-7
(MSB)
8-15
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.
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6 5 4
Command Code = A0h
Reserved
Allocation Length
Reserved
Reserved = 0
6 5 4
LUN List Length = 8
Reserved
LUN = 0
Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification
Bit
3 2
Bit
3 2
179
1 0
(LSB)
FLAG LINK
1 0
(LSB)
(LSB)