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Table 12 Status
Bytes
Status Byte
GOOD (00)
CHECK
CONDITION
(02)
BUSY (08)
INTERMEDIATE
GOOD (10h)
RESERVATION
CONFLICT
(18h
COMMAND
TERMINATED
(22h)
The Test Unit Ready command is used to determine whether
the library would accept, for example, a Move Medium or
Position command without returning a CHECK CONDITION
status.
Quantum|ATL PowerStor L200 Series Library User's Guide
Description
This status indicates the library successfully
completed the command.
A contingent allegiance condition occurred. The
REQUEST SENSE command should be sent
following this status to determine the nature of
the event.
The target is busy. This status is returned
whenever the device is unable to accept a
command from an otherwise acceptable initiator.
The initiator should reissue the command at a
later time.
This status is returned instead of GOOD status for
commands issued with the LINK bit set.
Following the return of this status, the library
will proceed to the COMMAND phase for the
transfer of the next linked command.
This status is returned by the library whenever a
SCSI device attempts to access the library when it
has been reserved for another initiator with a
RESERVE UNIT command.
This is the status returned for a command that
was terminated by a TERMINATE I/O PROCESS
message. This status also indicates that a
contingent allegiance condition has occurred.
Chapter 5 SCSI Interface
SCSI Message System
55
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