We have 3 AIT-2 drives within a Qualstar 412600 library.
After having a drive replaced, 'q dri' is now showing it
as device type 'UNKNOWN' rather than '8MM' - and the define
path command is failing with :

<< Message number 8972 not available for language /USR/LIB/NLS/MSG/EN_US/ >>

Usually when a drive is replaced, I delete the path and drive and
recreate these ( since TSM 5.2 ? ) as the serial number of the drive no
longer matches. Up to now this has always worked.

The drive was detected OK by AIX and I have been able to use tar directly from
AIX to write and read from a tape manually inserted. I have removed and
recreated the TSM device 'mt1' but still the problem re-occurs.

Is this due to the tape drive failing to respond correctly to some SCSI
enquiry commnd that TSM is submitting ? lscfg returns same output from
a 'good' and a 'bad' drive :

lscfg -vl rmt0
  rmt0             U0.1-P1-I1/Z1-A1  Other SCSI Tape Drive

        Manufacturer................SONY
        Machine Type and Model......SDX-500C
        Serial Number...............
        Device Specific.(Z3)........0000

'q dri f=d' shows a serial number for the 'good' drives.

Is there any way of persuading TSM to use this drive ? Or is there something
wrong with this drive ?

Using TSM 5.2.3 on AIX 5.2 .

+----------------------------------------------------------------------+
 Steven Bridge     Systems Group, Information Systems, EISD
                          University College London