Quantum DLT 8000 Product Manual page 178

SCSI Commands
LOAD UNLOAD Command (1Bh) (continued)
Table 5–14 LOAD UNLOAD Command Descriptor Block — Field Descriptions
Field Name
Immed
Re-Ten
Load
EOT
5-34
Description
Immediate. If this bit is set to 1, status is returned as soon as the
operation is started. If set to 0, status is returned after the operation
has completed.
Re-tension. Re-tension operations are not needed on the tape drive.
This bit is ignored (i.e., "good" status, if bit is set to 1).
Load. When a cartridge is inserted, the tape medium is automatically
loaded and positioned by the drive at Beginning of Medium (BOM).
Logically, the drive is positioned at the beginning of Partition 0.
If the Load bit is set to 1, and the medium is already loaded, no action
is taken. A "good" status is returned. If the medium was unloaded
but the cartridge was not removed, a Load command causes the tape
to be loaded to Beginning of Partition (BOP) again and made ready.
If the Load bit is set to 0, and the medium is loaded, the drive writes
any buffered data and filemarks to the tape and then rewinds the
tape to BOM and unloads the medium back into the cartridge. The
green Operate Handle indicator on the tape drive's faceplate
illuminates and the cartridge can be removed from the tape drive. If
the medium is already unloaded, no action is taken. A "good" status
is returned.
End of Tape. This bit is ignored by the tape drive unless both the EOT
and Load bits are set to 1, then the drive returns CHECK CONDITION,
ILLEGAL REQUEST data.
Quantum DLT 8000 Tape System