Hello,
We have a new tape library that uses LTO media, and I need some advice
on the merits of setting up a new pool for this media versus using our
existing pool.
All criticisms welcome. We have our primary server running on Solaris
with one ATL DTL tape library, and one storage node server (runs Linux)
now running two tape libraries: an ATL SDLT and a Storagetek LTO.
Here's the deal. Up until this, we've been using only DLT and SDLT media
on the two ATL libraries and only two pools: ATL and FUL. The ATL pool
is used for anything other than fulls, and the FUL pool is used
exclusively for fulls. Well, I decided to stick with the FUL pool for
any the full backups to LTO media, but I thought it might be slick to
have a new pool named LTO to handle the non-full backups to any LTO
media. Of course, since groups cannot overlap pools, this required
having to create a new LTO counterpart group for each current group and
then add every client to this new group, but no big deal.
Here's the problem, though. Since I don't want to launch two groups that
would perform the same backups, I'm now forced to decide which clients I
want to back up to the LTO library and then remove them from any group
that's a member of the ATL pool, while keeping them in the LTO group.
This means that NetWorker will not be able to decide for itself which
savesets to spill over to the LTO library versus the SDLT library.
However, if I keep everything in the ATL pool, then I don't need these
extra groups and NetWorker can decide which library to direct the
savesets to. Can anyone recommend any advice one way or the other?
Advantages or disadvantages? Is there any way to have separate pools and
allow NetWorker to decide for itself which one to use? I didn't think
so, and we do not use auto-media management for this very reason as
NetWorker simply labels the tapes based on whatever pool is needed at
the time.
We can't use our existing DLT type bar codes anyway because these are
non-stick and use the built-in groves on the DLT and SDLT tapes. The LTO
media doesn't have these, so we'd end up having to buy another set of
stick style bar codes for them regardless. I guess I thought it might
help to organize our media better if we had a separate pool since most
of our tapes end up in the non-FUL pool anyway.
Thanks.
George.Sinclair AT noaa DOT gov
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