Operating instructions

SEPTEMBER 2005 MAGNUM 1X7 LTO AUTOLOADER
19-15
COMMAND STATUS
19.4 COMMAND STATUS
The autoloader returns a status byte after processing the REQUEST VOLUME
ELEMENT ADDRESS command. This section describes when each type of
status byte might be returned.
Good
The autoloader returns Good status when it is able to process the command
without errors.
Busy
The autoloader returns Busy status when it is processing a command for a
different initiator or when it is in the process of aborting a motion command.
Reservation Conflict
The autoloader returns Reservation Conflict status when it is reserved by a
different initiator. See Chapter 20 for more information about the RESERVE
command.
Check Condition
The autoloader returns Check Condition status for the following reasons:
 The message system is enabled and a message error occurs while the
autoloader is processing the command.
 The autoloader detects an unrecoverable parity error while receiving the
CDB.
 The command is issued to an invalid LUN.
 A Unit Attention condition is pending for the initiator.
 A reserved bit is set to 1 in the CDB.
 The autoloader is not ready because the door is open or the autoloader is
operating in LCD mode or Console mode.
 A parameter in the CDB is invalid (see Table 19-3 for sense data).
Table 19-3 Invalid parameters in the REQUEST VOLUME ELEMENT ADDRESS CDB
Sense
Key
ASC ASCQ
SKSV
Bit
C/D
Bit
BPV
Bit
Bit
Pointer
Field
Pointer
Error
5h 24h 00h 1 1 1 — —
A reserved bit is set in the CDB. The
pointers point to the bit in error.
5h 21h 01h 1 1 0 0 0002h Invalid starting element address.
5h 24h 00h 1 1 1 3h 0001h Invalid element type code.