<*please don't flame me for bringing up a non Veritas solution*>We were in the 
same situation last year. We took a different approachthough. This year we 
began deploying NetApp's Open System Snapvault(OSSV) on these servers and 
started backing them onto NetApp'sNearline filers R200. After the inital full 
backup, its justincremental forever over the network, but each backup is a full 
backupon the  R200 because it uses snapshots. Has been working great so far. We 
are able to retain upto 6 to 8 weeks of backups on disks. For someof the 
critical systems we have increased the backup frequency to 4 to8 hour 
intervals.  Our SLAs have improved dramatically. We havescripts that allows 
doing Oracle hot backups too.We now only do monthly offsite via NDMP using 
Netbackup now. No morenightly tapes!Now if Veritas can fix their limitation of 
having to keep the NDMPimage size to less than a TB. it would make our life 
much morehappier.-GPS: I am just a statisfied customer and not affiliated to 
any vendormentioned here.
On 5/11/05, Piszcz, Justin <jpiszcz AT servervault DOT com> wrote:>  >  > > 
All, > >   > > I was curious if anyone here is backing up large amounts of 
data, such as> large databases and fileservers that are 3TB or bigger. > > What 
is the best way to accomplish such backups? > >   > > Here is one 'idea' ? 
please let me know if there are other, better ways: > >   > > If one can 
sustain 100 megabytes per second over a gigabit link writing to> multiple (5) 
LTO2 tape drives, each doing 20MB/s then it would still take> around 8 hours to 
backup this information, essentially you would need a> complete backup solution 
JUST for this 3TB array. > >   > > What are some good methods when backing up 
such large data sets? > >   > > Thanks! > >