Fujitsu MBA3147RC, MBC2036RC, MBC2073RC, MBA3300RC, MBA3073RC specifications Support

Command Specifications

				Table 4.6 Support
"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.
	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

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.

c.CDB size

This field contains the number of bytes in the CDB for the operation code being queried, and the size of the "CDB Usage Data" field in the return data.

d.CDB usage data

This field contains information about the CDB for the operation code being queried. The first byte of the "CDB usage data" contains the operation code for the operation being queried. All bytes except the first byte of the "CDB usage data" contains a usage map for bits in the CDB for the operation code being queried.

The bits in the "Usage map" have a one-for-one correspondence to the CDB for the operation code being queried. If the device server evaluates a bit as all or part of a field in the CDB for the operation code being queried, the usage map contains a one in the corresponding bit position. If the device server ignores or treats as reserved a bit in the CDB for the operation code being queried, the usage map contains a zero in the corresponding bit position. The usage map bits for a given CDB field all have the same value.

Thus, the CDB usage bit map for this command for a device server that implements command support data but not vital product data is: 12h, 02h, FFh, 00h, FFh, 00h.

(7)VPD information

144 C141-C013