I have an AIT drive that I can't communicate with anymore. It's been a few
weeks since I last used it. My Sun can't see the drive. I'm running
Solaris 2.6.
I haven't changed devices or anything. I haven't touched the machine
physically.
I did a <boot-r> to reconfigure the system. When I type <dmesg>, the drive
is not in the list.
I shutdown the machine and did a <probe-scsi-all> . I can see the drive.
It's on a chain with two other tape drives. Both of those drives work fine.

Can anyone give some advice on what I should try to do to get the drive up
and running again.

I assume it's a software OS problem since I can see the drive with
probe-scsi-all.

Any advice would be appreciated.

Peter