Wow.
So, per Alex Davies, the rule of thumb is that you don't want to let your
catalog backup get above ~ 750 GB or above 1 million images, for very practical
reasons:
- At 750 GBs it will take roughly 10 hours to do your catalog backup and
probably even longer for a full recovery. That's the definition of unwieldy for
Vault and frightening for recovery.
- The image cleanup that runs (by default) every 12 hours can process 30 - 50
records per second, which means it'll take something like 5 to 9 hours to run
if you have 1 million images. You'd really rather not have it running 100% of
the time.
It is... possible to archive data out of the catalog, and somewhat supported
(probably still as a contracting engagement), but that makes recovery even more
of a pain.
I'm guessing that your catalog is so large not just because of the client count
but also because of some hefty retensions. You should really consider moving
your longer retention stuff out of your backup product into an archiving
product: NetBackup wasn't decided with long-term archival in mind, and it
doesn't scale very well in that regard. (A couple of years, sure, but 5 or
more...)
That said, what's the real driver for consolidating your masters here? You're
up against the scaling limits of the application even without merging those two
environments...
--
gabriel rosenkoetter
Radian Group Inc, Senior Systems Engineer
gabriel.rosenkoetter AT radian DOT biz, 215 231 1556
-----Original Message-----
From: shred625 [mailto:netbackup-forum AT backupcentral DOT com]
Sent: Friday, March 06, 2009 1:50 PM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Large catalog issues
I know Symantec does not recommend a catalog to be larger than 500GB. I am
really trying to centralize my backup environment and make things a lot more
administratively friendly.
I basically have 2 backup environments right now my main one having a catalog
of 660GB and a smaller one with a catalog of 210GB. I want to bring this
together into one environment and am a little worried about the catalog size
giving us issues.. I really don't need to merge the catalogs and with the other
things I am doing the size will shrink over time.
What I am asking have any of you had issues will having catalogs that are in
the area of 750GB and up. If you have what kinds of things do you see?
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