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Description / Abstract:
This standard defines the command set extensions to facilitate
operation of SCSI direct access block devices. The clauses in this
standard, implemented in conjunction with the applicable clauses of
SPC-4, specify the standard command set for SCSI direct access
block devices.
The objectives of this standard are to:
a) permit an application client to communicate over a SCSI
service delivery subsystem (see SAM-5) with a logical unit that
declares itself to be a direct access block device in the
PERIPHERAL DEVICE TYPE field of the standard INQUIRY data (see
SPC-4); and
b) define commands and parameters unique to the direct access
block device type.