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3.1 Control/Sense Commands
C141-E167 3 -
9
(6) Command Support Data
Figure 3.2 shows the format and contents of the command support data transferred to the INIT by
this command if "0" is specified in the "EVPD" bit and "1" is specified in the "CmdDt" bit.
Bit
Byte
76543210
0 Qualifier Device Type Code
100000 Support
2Version
3 X'00' (Reserved)
4 X'00' (Reserved)
5 CDB Size (m-5)
6
m
CDB Usage Data
Figure 3.2 Command support data
a. Qualifier, Device Type Code, Version
These fields are the same as those in the previously mentioned standard INQUIRY data.
b. Support
This field indicates the value defined below.
"Support" Bit 2 1 0 Description
0 0 0 Data about the requested SCSI operation code is not currently
available.
0 0 1 The device server does not support the tested SCSI operation
code. All data after byte 1 is undefined.
010Reserved
0 1 1 The device server supports the tested SCSI operation code in
conformance with an SCSI standard.
1 0 0 Vendor-specific (undefined)
1 0 1 The device server supports the tested SCSI operation code in a
vendor-specific manner.
1 1 0 Vendor-specific (undefined)
111Reserved
If the "Support" field contains "000b", all data after byte 1 is not valid. One possible reason for
"support" being "000b" is the device server's inability to retrieve information stored on the
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