The 7331 supports only high-voltage differential drives. You will blow
out a low-voltage differential drive if you try to use it in the 7331. I
don't know of any other HVD drives that will work. I think the unit
comes with 7 GB Exabyte 8mm drives. I assume the 20 GB drive can be used
if you put it in the differential interface, but only if the drive door
is in the same exact position as the current drives. We successfully
pulled some newer 7GB LVD drivess out of the LVD interface and put them
in the HVD interface so we could use them in this unit.

Bill Wichser wrote:

> While this may be the wrong forum to ask, I cannot find one on my
> newserver which deal specifically with IBM hardware.
>
> I have an IBM 7331 8mm tape library with two drives. I would like to
> know who made this tape library for IBM so that I can use it with a
> commercial package which fails to recognize this unit.
>
> Also it seems as though it would be a trivial upgrade to replace the
> current 8mm drives which only support about 20G with something a little
> better, like the VXA2 drives. Since it is only SCSI and the tapes are
> all the same 8mm format, is it as trivial as that? Just replace the
> drives and tapes?
>
> Thanks for any information you may be able to provide.
>
> Bill