Does this file exists on your master?
/usr/openv/netbackup/bin/CLEAN_IN_BACKGROUND
This basically tells bpsched to do all its
housekeeping in the background.
Her eis technotew that tells how to set it up
http://search.redwood.min.veritas.com/data/technotes/237473.htm

Since there are millions of small files, you might
want to use FlashBackup.

--- Marijan Rupcic <marijan AT defcen.gov DOT au> wrote:
> G'day all
> 
> I'm running NBU 4.5 on a 4cpu V880 with Solaris 8
> server and we have a
> number of classes that have True Image Restore
> enabled. These classes
> are usually for filesystems with millions of files.
> The nbu database is
> kept on a R5 T3. .
> 
> The problem is that when nbu does its housekeeping,
> after a scheduled
> set of backups runs, it processes the on-disk TIR
> image info. (We had
> set the retention of the TIR info to one day). For a
> client with a
> number of backup images, each with TIR info for
> millions of files, this
> can take a long time - i.e. a couple of hours. When
> you have 3 clients
> with the same profile, this means a _long_ time
> doing the processing
> housekeeping, which means in effect that no backups
> can run during that
> time. Unfortunately, nbu does each client serially,
> one at a time. (Only
> one or two cpus are kept busy, and the nbu database
> is on a Raid5 T3 and
> i/o performance doesn't seem to be the problem).
> 
> I tried setting the retention period to 0, hoping
> that the TIR info
> would only be kept on tape and not the disk, but it
> looks like it's
> still going to disk.
> 
> Does anyone else have this problem, and do they have
> a workaround? Is
> there something I'm missing?
> 
> Does nbu 5 do this housekeeping a bit smarter, with
> some degree of
> parallelism, rather than one client at a time?
> 
> Is that the last question?
> 
> Thanks.
> 
> Marijan
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>
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