Something is wrong with your set up if you are only getting 1.5gb/hr!  And
especiallyif you are using a 25 gb disk pool.
We back up a 35gb database (true, each file is about 1.5gb) in 2 hours.
(over network). It goes to disk pool. Important to have disk pool be bigger
than one bu session (else migration will auto kick in).
 Check your activity log to see
if something else is happening while your bu is taking place, like a
migration or reclamation. Also important to have
compression parameters and NT parameters set right (I'd have to look them
up to report them - and probably depends on
particular HW anyway). And our NT server is not as powerful as yours! It
might be worth it to get a qualified IBM/ADSM rep in to audit your set up.
(Also we have ADSM v2, which is reportedly slower than v3)





"Ross, Mitch" <mross AT PSD.COMPUCOM DOT COM> on 02/05/99 09:25:03 AM

Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>

To:   ADSM-L AT VM.MARIST DOT EDU
cc:    (bcc: Shirley Chirico/OKIDATA/OKI_DATA_CORP/OKI_ELECTRIC/US)
Subject:  Re: Windows NT ADSM server




Funny you should ask. I've been working on that quite a bit recently.

IBM NetFinity 7000
4x200MHz P2 CPU's
1gig RAM
dual 100mb Ethernet (one dedicated for backups)
+25gig RAID 5 for disk storage pools
3447 DLT Tape library with dual DLT drives
NT 4.0, SP4
ADSM 3
Client compression on, TCP/IP tuning, etc.

The best we can do with this machine is restoring 1.5gig/hr over the
network.  The data we're backing up is lots of small (<1meg) files that
don't compress much.  (My understanding is that if you have huge
mega-files,
ADSM does better.)

We've got a requirement to restore 260gig overnight or better. ADSM just
isn't good enough.  An early test with BackupExec on a much lesser machine
gave 6 to 7gig/hr. (DSS3 12gig tape, 1 CPU, 200meg RAM)

If this holds true on production quality hardware, we're dumping ADSM.

____________________________________________________________
Mitchell Ross                           mailto:mitch.ross AT ncgroup DOT com
CompuCom Systems, Inc.          http://www.ncgroup.com
The Source for Technology Deployment Processes and Standards