Quantum DLT 8000 Product Manual page 371

WRITE FILEMARKS Command (10h) (continued)
Table 5–103 WRITE FILEMARKS Command Data — Field Descriptions
Field Name
WSmk
Immed
Number of Filemarks
The WRITE FILEMARKS command may be used to force the tape drive to write any
buffered WRITE data to the tape medium. If the tape drive is in buffered mode, and
WRITE FILEMARKS is received, the requested filemarks are appended to the data and
the WRITE buffer contents are flushed to tape medium. A value of 0 in the Number of
Filemarks field indicates that no filemarks are to be written to the tape medium, but still
flushes any WRITE data to the tape medium.
If End of Tape (EOT) is detected while writing filemarks, the tape drive finishes writing
any buffered data and terminates with CHECK CONDITION status. Within the Sense
data, the End of Medium (EOM) bit is set, the Sense Key field is set to NO SENSE and
the Additional Sense Code and Additional Sense Code Qualifier fields are set to EOM/P
DETECTED. The tape drive attempts to complete any subsequent WRITE FILEMARKS,
returning a CHECK CONDITION status in each case. If the tape drive encounters the
physical EOM when attempting a WRITE FILEMARKS, it returns CHECK
CONDITION status.
Description
Write Setmark. Must be 0. This tape drive does not support Setmarks.
Immediate. When this bit is set to 1, the tape drive returns status as
soon as the Command Descriptor Block (CDB) has been validated,
unless the Filemark count is 0, or greater than 1 (since either
condition causes the WRITE buffer to be flushed to tape medium).
When set to 0, this bit indicates the status will not be returned until
the operation is complete.
This field contains the number of consecutive Filemarks to be written
to tape medium. A value of 0 is not considered to be an error; GOOD
status is returned.
Quantum DLT 8000 Tape System
SCSI Commands
5-227