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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