Feedback wanted asap

[glenn at aoi.ultranet.com (Glenn Burkhardt)]

> I can also vouch for corrupt 4mm tapes.  My experience is that 4mm drives
> trend towards bad alignment quickly.  The result is that tapes written/read
> by the same tape drive work, but if you replace the drive after a failure,
> your tape library quickly turns into a warehouse of useless pooh... which
> no one wants to discard because the tapes might be readable, but likely aren't.

Boy, this really peeks my curiosity now!!  We use these little HP units in
our product, and I've always been able to take tapes between sites and read
them without difficulty over the last couple of years.

So, 

1.  What model tape drive have you been using?

2.  How long is it before the tape heads become mis-aligned?

Thanks.

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