Quantum 7000DLT Series, Product Manual

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SCSI Commands
Quantum DLT 7000 Tape System 5-7
The status code is contained in bits 1 through 5 of the status byte. Bits 0, 6, and
7 are reserved. Table 5–4 describes the status codes returned by the drive.
NOTE
In contrast to the BUSY status condition, the DRIVE NOT READY
Sense Key is returned as part of the Sense data following a REQUEST
SENSE command and indicates that a media access command has
been issued and the medium is not ready to be accessed. For
example, the medium is not installed, the medium has been
unloaded, and the drive is currently initializing the medium to
prepare it for access).
Table 5–4 Status Codes
Status
Code
Definition Meaning
00h GOOD The drive successfully completed the command.
02h CHECK CONDITION A Contingent Allegiance condition occurred.
08h BUSY The drive cannot service the command at the moment, and
its Command Descriptor Block has been discarded. The
initiator can retry the command at a later time.
10h INTERMEDIATE
GOOD This status is returned instead of a GOOD status for
commands issued with the LINK bit set. Following the return
of this status, the drive proceeds to the COMMAND phase for
the transfer of the next linked command.
18h RESERVATION
CONFLICT Another initiator has reserved the drive when it has been
reserved for another initiator with a RESERVE UNIT command
(this status is never returned for INQUIRY or REQUEST SENSE
commands).
28h QUEUE FULL The drive cannot service the command at the moment, and
its Command Descriptor Block has been discarded. (Returned
for a tagged command when all of the drive's internal
command buffers are in use, for instance.)