Thank you for all your helpful solutions. I will give it a try.

Patricia Neal
Production Support Specialist
C.S.E.A.
----- Original Message ----- 
From: "Tim Verbois" <Tim.Verbois AT ET.VLAANDEREN DOT BE>
To: <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
Sent: Thursday, March 15, 2007 9:24 AM
Subject: Re: [Networker] lengthly restores


> It's also possible to clone your savesets during the day.  Then you can
> get 10 savesets that are written parallel to 10 tapes (every tape has 10
> sessions) cloned to 1 saveset/tape.  You will increase your recover
> speed by 10 times in this case because when restoring, the tape drive
> will be able to use the full speed for 1 session.  In the first case
> before the clone, you would be able to restore at Max/10 speed (in
> theory).
>
>
>
> Matthew Huff wrote:
> > Because Oracle RMAN data is encapsulated in Legato savestreams neither
> > can optimize for the backup as well if they were truly integrated (not
> > that integration is ever going to happen). Also, one of Legato's
> > strengths is the parallization of backups which improves backup
> > performance, but slows recovery.
> >
> > There is a lot of metadata that has to be updated during Oracle
> > restores. Rather than backup to disk, have you looked at Virtual Tape
> > Libraries yet? With data de-duplication and the know issues with
> > adv_file systems, I would think a VTL would work better.
> >
> > With a VTL library you can do all your backups to the VTL and clone
> > tapes from your current library for offsite backups.
> >
> > -----Original Message-----
> > From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT 
> > EDU] On
> > Behalf Of Patricia Neal
> > Sent: Thursday, March 15, 2007 10:50 AM
> > To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> > Subject: [Networker] lengthly restores
> >
> > Why does it take so long to restore Oracle DB's and products? When I
> > back up to tape, it takes 6 hours for 500GB's. We had a problem with our
> > Storage Area and I needed to restore the whole 500 GB's last night. It
> > took 17 hours. Why??
> > I'm going to have to look into backing up to disk rather than tape. I've
> > got everybody on my back about this. Restoring from disk would probably
> > be quicker in a situation like this. The amount of disk space I would
> > need for something like this is like 2 1/2 times the amount that I'm
> > backing up though isn't it?
> >
> > Patricia Neal
> > Production Support Specialist
> > C.S.E.A.
> >
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>
> -- 
> Tim Verbois
> EDS-Telindus
> Unix Team
> 02/553.71.73
>
> To sign off this list, send email to listserv AT listserv.temple DOT edu and 
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