Quantum Instruments DLT 7000 Scsi Commands, Scsi Description, Implemented Ansi SCSI-2 Commands

SCSI Description

3.2SCSI COMMANDS

ANSI classifies SCSI commands as mandatory, optional, or vendor-specific. The mandatory and optional commands implemented for the drives are summarized in Table 3–1 and described fully in Chapter 5, SCSI Commands.

Table 3–1 Implemented ANSI SCSI-2 Commands

Command	Code	Class	Description
ERASE	19h	Mandatory	Causes all of the tape medium to be
			erased, beginning at the current position
			on the logical unit.
INQUIRY	12h	Mandatory	Requests that information be sent to the
			initiator. The initiator may also request
			additional information about the drive.
LOAD UNLOAD	1Bh	Optional	Causes tape to move from not ready to
			ready. Prior to performing the load
			unload, the target ensures that all data,
			filemarks, and/or setmarks shall have
			transferred to the tape medium.
LOCATE	2Bh	Optional	Causes the target to position the logical
			unit to the specified block address in a
			specified partition. When complete, the
			logical position is before the specified
			position.
LOG SELECT	4Ch	Optional	Provides a means for the initiator to
			manage statistical information
			maintained by the drive about the drive.
			This standard defines the format of the
			log pages but does not define the exact
			conditions and events that are logged.
LOG SENSE	4Dh	Optional	Provides a means for the initiator to
			retrieve statistical information
			maintained by the drive about the drive.

3-2 Quantum DLT 7000 Tape System