Gotcha.
Yeah, as I mentioned, I'm using DSSU for a couple of small WAN connected
clients on the East and West coasts, and a couple Regional Presence
Offices in between.
Definitely great for that.
I do an incremental every day to DSSU, synthetic fulls once a week, and
then a FULL once a month...again to DSSU.
The FULLs take about 24 hours for < 20Gig of data...no way I could tie
up a tape drive for that.

I've got a couple TB on w2k boxes.....one resource (virtual server on
w2k cluster) with 900 gigs of data went from a 13 to 8 hours for a full
when we moved the data to SAN disk. 

Paul

> -----Original Message-----
> From: Ed Wilts [mailto:ewilts AT ewilts DOT org] 
> Sent: December 1, 2005 7:20 PM
> To: Paul Keating
> Cc: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] VTL vs. Disk based backups
> 
> Hi Paul,
> 
> For slow clients, a dssu will work wonders for freeing up tape drive
> time.  Sometimes there's nothing you can do on a client - it's always
> going to be slow (lots of small files on an aging server is a good
> example), but at least it can trickle in the background.
> 
> We're constantly fighting very large and slow clients - millions of
> files on Win2k3 that just can't just feed NBU the data fast 
> enough.  We
> started with a 24-hour backup and cut that in half by writing 
> to a DSSU.
> We cut it in half again with the advanced client (which has lots of
> issues but at least the backups are going again).