Figure 3.2 Command Support Data - Fujitsu MAX3073NC - SCSI,80, Dell DC961,Hard Drive Scsi Logical Interface Specifications

(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
7
Byte
0 Qualifier
1 0
2
3
4
5
6
~ ~
m
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
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 media.
When this is the case, a subsequent request for command support data may be successful.
C141-C010
6 5 4
0 0 0
X'00' (Reserved)
X'00' (Reserved)
CDB Size (m-5)
CDB Usage Data
Figure 3.2 Command support data
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.
0 1 0 Reserved
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)
1 1 1 Reserved
3.1 Control/Sense Commands
3 2
Device Type Code
0
Version
Description
1 0
Support
~
3-9