SCSI Tape problems

[Daniel Green <g595455 etpc87 mar lmco com>]

I am trying to use a scsi tape drive to backup/read data/write data.   I
am using the 2.4.10 kernel and a sony ait 300C tape drive.  I have the Q
Logic ISP1020 (rev 05) controller.  I am unable to get dd to do
anything.

dd if=/dev/st0 of=test.raw
dd: reading `/dev/st0': Input/output error
0+0 records in
0+0 records out
dd: closing input file `/dev/st0': Input/output error

If I use tar to say copy some files to the tape, it will work for about
10 minutes before freezing up.  I have to hard boot the machine to get
it back.  Anybody have any ideas.

Thanks,
Dan