FYI,
For those with ever growing catalogs, in the release of 4.5 FP3 and up,
there a new feature called catalog archiving. It allows you to send the
really large .f files off disk and puts them on a tape. It works really
well for catalogs with retention periods of infinity. 
Dan O

For additional details, below is a link to the 4.5 FP3 PDF feature set
admin guide and under the section "using Catalog for catalog backups"
there is a section tilted "Catalog Archiving" and starting on page 193
(page 229 if you go by the sidebar), it goes into details on use of
catalog archiving.
4.5 FP3 admin guide- 
http://seer.support.veritas.com/docs/255206.htm


-----Original Message-----
From: Matt Beal [mailto:matt.beal AT lightsurf DOT com] 
Sent: Tuesday, March 23, 2004 1:50 PM
To: Jennifer Green
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Catalog sizes

I have about the worst-case environment you can imagine - almost 200
million files and directories, only totaling about 3 TB. Catalog size
just crossed 200 GB, or about 7% of the data size.

A suggestion for anyone in that position: switch to the two-stage
catalog backup method. bpbackupdb does not make use of the
NUMBER_DATA_BUFFERS and SIZE_DATA_BUFFERS settings, instead using a
default blocksize of 32k, and ran WAY too slow to our LTO-2 drives. I'm
now able to back up the catalog in less than an hour, with write speed
peaks up to 105 MB/s.

matt

On Tue, 2004-03-23 at 09:34, Jennifer Green wrote:
> Hi,
> 
> I am trying to correctly size catalog space and was wondering what all
of 
> you are seeing with your catalog sizes.  Generally it would be 2-4% of
total 
> data being backed up = 1Tb data = 20-40G catalog...is this what you
are 
> seeing?
> 
> Thanks
> 
> Jennifer
> 
> 
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