Quantum DLT 8000 Product Manual page 399

Appendix G
DLT 7000 EMULATION FEATURE
This appendix provides information about using the DLT 7000 emulation feature on a
DLT 8000 tape drive. It includes information about what the feature is, compares the
feature with actual DLT 7000 tape drive capability, and explains how to enable the
emulation feature.
DLT 7000 emulation is a feature that has been included in the DLT 8000 tape drive's
firmware. It allows a host to operate a DLT 8000 tape drive with this emulation feature
enabled to function as a DLT 7000 tape drive, emulating the DLT 7000 tape drive's
performance, capacity, and SCSI bus communication. Note, however, that some minor
differences will exist so that emulation of a DLT 7000 drive is not exact; those
differences will be described in this Appendix.
When in DLT 7000 emulation mode, the DLT 8000 tape drive identifies itself over the
SCSI bus as a DLT 7000 tape drive, even though it will still support the additional
SCSI-3 commands not supported by a genuine DLT 7000 drive. This will not present a
problem, though, since those commands should not be invoked in a DLT 7000 drive's
environment anyway. Running in DLT 7000 emulation mode, a DLT 8000 drive will
have a capacity of 35 GB (native) and a transfer rate of 5 MB/second.
Applications will be able to distinguish between a DLT 7000 drive and a DLT 8000 drive
in DLT 7000 emulation mode over the SCSI Bus via the "Product Family" code returned
in the SCSI INQUIRY command's Vendor Unique Bytes. Once enabled, the DLT 7000
emulation setting will be retained even across power cycles in the tape drive.
Quantum DLT 8000 Tape System G-1