You can check to see if your drive mapping is correct by mounting a tape in
the drive and executing the following from your shell.

tar -tvf /dev/rmtx

If it returns a block size error, or even gives you a list of files, your
mapping is correct.  If it times out with a "not ready" type of message,
mapping may not be correct or maybe the drive just isn't talking.

Good luck.

Alex Paschal
Storage Administrator
Freightliner, LLC
(503) 745-6850 phone/vmail