Quantum SDLT 320 User Manual Page 101

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SDLT 220 and SDLT 320 Product Manual CHAPTER 6: SCSI Description
81-85002-01 March 2004 6-5
6.3 SCSI-3 Commands
ANSI classifies SCSI commands as mandatory, optional, or vendor-specific.
The mandatory and optional SCSI-3 commands implemented for the drives are
summarized in Table 6-2.
Table 6-2. Implemented ANSI SCSI-3 Commands
Command Code Class Description
PERSISTENT RESERVE
IN
5Eh Optional Used to retrieve from the drive information
about persistent reservations and registrations.
PERSISTENT RESERVE
OUT
5Fh Optional Used to register and reserve the drive through
resets and power cycles.
RELEASE (10) 57h Mandatory Used to release a previously reserved unit.
REPORT DENSITY
SUPPORT
44h Mandatory Requests the drive report the density codes and
some identifying information for all supported
medium formats.
REPORT DEVICE
IDENTIFIER
A3h Optional Used to retrieve the information saved in the
drive by a SET DEVICE IDENTIFIER
command.
REPORT LUNS A0h Mandatory Requests the drive return a list of supported
logical units.
RESERVE (10) 56h Mandatory Used to reserve a logical unit.
SET DEVICE
IDENTIFIER
A4h Optional Used to save device identifying data in the
drive.
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