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Re: [Veritas-bu] Reduce Volume Pools
2008-10-26 12:45:16
On Tue, Oct 14, 2008 at 1:57 AM, WEAVER, Simon (external) <simon.weaver AT astrium.eads DOT net> wrote:
To give you an example, lets say I have 5 SAP Servers. Each one has a
total of 3 Volume Pools (Offline Backups, Redo Log Backups and Online
Backups). 5 x 3 = 15 Volume Pools.
Yuck. No wonder you want to fix that.
My aim was to reduce this down to say 3 pools (SAP OFFLINE, SAP ONLINE
and SAP REDO). Any SAP systems presently known to NetBackup or future
backups for SAP can use these pools. Thus, trying to help reduce the
amount of tapes in use.
You should attempt to reduce those three and combine them with all of the other backups. Do you really, really need to have physically separate tapes for your SAP backups versus your file system backups? In most environments, the answer is no. You don't even need a separate pool for online vs offline tapes - NetBackup knows if the tape is in the robot or not.
We used to have separate pools by platform but don't even do that any more. The fewer pools you have, the more likely you are to fill tapes.
Whatever you do, don't try to mix retentions on the same tape to reduce tape utilization. That could end up using a lot more tape in the long run rather than less (if 90% of the tape is incrementals and there's a 7-year backup on the same tape, then you can't reuse the space of those incrementals for 7 years).
.../Ed
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