
SCSI Commands
5-16 Quantum DLT 4000 Tape Drive
ERASE Command (19h) (continued)
Table 5–7 ERASE Command Descriptor Block - Field Descriptions
Field Description
Immed Immediate. If the Immediate bit = 0, the target does not return status until the
selected operation has completed.
If set to 1, status is returned as soon as the operation has been initiated.
Long Must be set to 1. The Long bit controls the distance of tape to be erased. Filler and
End of Data (EOD) blocks are written if needed, then the entire rest of the tape is
erased.
NOTE: The ERASE command results in no operation for the tape drive unless the Long
bit is set to 1. Issuing the ERASE command away from Beginning of Tape (BOT) is an
ILLEGAL REQUEST.
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