>TSM server version 4.2.2.0 running on AIX 4.3.3.
>My command : DEFINE DRIVE 3494A 3494AD89 DEVICE=/DEV/RTM9 is failing with
>the following:
>
>03/20/03 13:04:29 ANR8779E Unable to open drive /dev/rmt9, error number=16.
>03/20/03 13:04:29 ANR8420E DEFINE DRIVE: An I/O error occurred while
>accessing drive 3494AD89.
>>From the UNIX side of the business,,,everything looks appropriate:
>$ mtlib -l /dev/lmcp0 -f /dev/rmt9 -qD
>Device Data:
>   mounted volser.............none.
>   device category............0131
>   device state...............Device installed in Library.
>                              Device available to Library.
>                              ACL is installed.
>                              Auto Fill is enabled.
>   device class...............3590-E1A
>   extended device status.....00
>
>Any thoughts? Thanks.

You checked TSM and the device driver, but not AIX, where errno 16 indicates
that the device is in in some way busy.  Use the 'lsdev' and like commands
to check out the drive, and pay a visite to its front panel if necessary.

  Richard Sims, BU