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4.1 Control/Sense Commands
When "1" is specified in the "EVPD" bits of the CDB, the VPD information
described below is transferred to the INIT by this command. The INIT
specifies the type of VPD information required in the "Page code" field of the
CDB. The type of VPD information supported by the HDD and its page code
number are as shown in Table 4.7.
Table 4.7 VPD information
Page Code Page (Hex) Function
00 Page code list of supported VPD information
80 Device serial number
83 Device unique information
Furthermore, if page codes other than those shown above (VPD information
that is not supported by the HDD) are specified in the CDB, that command is
terminated with a CHECK CONDITION status (ILLEGAL REQUEST [=5] /
Invalid field in CBD [=24-00]).
The format and contents of each type of VPD information are shown below.
a. Page code list
This VPD information reports the page code list of VPD information
supported by the HDD. The format of this VPD information is shown in
Table 4.8.
Table 4.8 VPD information: VPD identifier list
Bit
Byte
7 6 5 4 3 2 1 0
0 Qualifier Device Type Code
1 X'00' (Page Code)
2 X'00'
3 X'03' (Page Length)
4 X'00' (Page Code List)
5 X'80' (Device Serial No.)
6 X'83' (Device unique information)
C141-C013 145