Hot Diggety! Alexander Lazarevich was rumored to have written:
>
> 1) is there any scenareo where a tape is still good, yet the server sets
> it to READ ONLY?

Yes, there is. It can happen if you have a drive whose element ID mapping
to rmt device name has gotten out of sync with each other. More common with
new installations, but has happened to at least one other person on this
mailing list when his FC switch broke and was replaced.

It's pretty easy to distinguish from other cases because this will usually
affect all or many tapes, rather than just a single tape.

But I imagine the sheer majority of these incidents will normally be either
a tape going bad or its label becoming unreadable.

-Dan