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[Networker] Default Tape Pool for Storage Node
2006-10-19 17:00:44
We have recently acquired a StorageTek SL500 tape library from Sun along
with a Sun Fire T2000 server and licences for Sun StorEdge EBS (a.k.a.
Legato Networker) 7.3 to serve as our next-generation enterprise backup
system. It has worked very well so far -- in fact so much so that we
have been faced with the opportunity to acquire yet another SL500 tape
library to serve as a storage node at a separate location. The idea
would be to backup servers from location A to tape library in location B
and backup servers from location B to tape library in location A -- all
in an effort to satisfy off-site backup storage requirements without
actually handling tapes (we are in a large metropolitan college campus).
Another potentially important nugget of information is that we do not
use custom tape pools; all servers are backed up to the 'Default' pool.
We feared that with only 4 tape drives in the library and multiple tape
pools, the drives may not get full utilization when a group owned by a
large pool that could use all 4 drives at once would be limited to a
lesser number of concurrent drives because another group from a smaller
pool was currently tying up one or more drives. Likewise, we feared that
such group owned by a larger pool might even be delayed from starting by
the group from the smaller pool. Groups were created based on the start
time for that group (i.e., 1800, 1830, etc).
My question is this: Will a storage node be able to use the same
'Default' tape pool as the "master" server, assuming, of course, that we
set the appropriate storage node affinity to determine which tape
library receives each client's data?
TIA,
Andrew Dietz
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