The only issue with this setup is the time to do the initial snapmirror
of 1TB. The NearStore drives are substantially slower than the fcal
drives, count on the initial transfer taking taking up to a week.
It took me 3 1/2 days to transfer 600gb's. Gigabit to an 8gb trunk to
the backbone router where the source filer was attached via gig.
Network was not the problem.
~JK
John D Stephens wrote:
>
> Here is a suggestion for your Oracle databases.
>
> Buy a "clustered" Network Appliance filer, F880C, with
> 2Tbytes each. Put Oracle on it. Turn on Snapshots and
> purchase the Snap Recover license. Then, in two
> months buy their new NearStore filer and get
> rid of daily backups altogether. Just snap to the
> NearStore every hour if you want. Once a week, do a
> full backup of the NearStore filer, which happens to
> be at a remote site along with your tape drives.
>
> The restore of a 2/4/6 TB disaster in this scenario
> would take about 2 minutes or less to recover data.
> Doesn't matter if the data is 1TB or 6TB, it takes
> two minutes because that's how long it takes for
> a NetApp to reboot.
>
> john
>
> scott.kendall AT abbott DOT com wrote:
> >
> > Snapshots are "cool" and they're great for many things, but as you mentioned
> > they have a small foot print. That's because it's just the pointers to the
> > original data and any changed data made throgh a "copy-on-write" process.
> >
> > It will help if you drop a table accidentally or need to roll-back to the
> > way
> > things used to look before that bad batch job.
> >
> > If there is actually corruption of the data the pointers are just pointing
> > to
> > bad data. It won't help your recovery in this case!
> >
> > - Scott
> >
> >
> > Chris Brewer
> > <cgbrewer AT rmbsc DOT com> To:
> > "'Rick Keahey'" <rickkeahey AT hotmail DOT com>
> > Sent by: cc: veritas-bu
> > AT mailman.eng.auburn DOT edu
> > veritas-bu-admin AT mailman DOT eng. Subject:
> > RE: [Veritas-bu] Disk to Disk Backups
> > auburn.edu
> >
> >
> > 03/06/2002 04:33 PM
> >
> >
> >
> > What about snapshots and BLIB (block level incremental backups). I've not
> > used them (hope to soon), but the theory is intriquing as it has a very
> > small data footprint and rapid recovery, among other things...
> >
> > For official email, please respond to cgbrewer AT kpmg DOT com
> >
> > Chris Brewer
> > UNIX Systems Consultant
> > Rocky Mountain Broadband Solution Center
> > KPMG Consulting, Inc.
> > 6399 S. Fiddler's Green Circle #400
> > Greenwood Village, CO 80104
> >
> > 720-493-7992
> >
> > -----Original Message-----
> > From: Rick Keahey [mailto:rickkeahey AT hotmail DOT com]
> > Sent: Wednesday, March 06, 2002 2:53 PM
> > To: joe AT joe DOT net
> > Cc: veritas-bu AT mailman.eng.auburn DOT edu
> > Subject: Re: [Veritas-bu] Disk to Disk Backups
> >
> > Ok, so here is my delima. I have more and more customers coming to me
> > saying that they have a database that is mission critical and if it goes
> > down, they need to be able to restore it very quickly, within minutes or few
> >
> > hours. The problem is that these databases are expected to grow to several
> > terabytes in the next year or so. Backups alone will take forever, but the
> > restores will be ugly. We are using DLT's right now and are just starting
> > to use SDLT's. I use NetBackup for backups software and do not have the
> > option to change off of that. Disk base is really the only choice that I
> > have to look at from here, although I am not against looking at some other
> > means that will speed things up.
> >
> > Thanks,
> > Rick
> >
> > >From: Johnny Oestergaard <joe AT joe DOT net>
> > >To: "Rick Keahey" <rickkeahey AT hotmail DOT com>
> > >CC: veritas-bu AT mailman.eng.auburn DOT edu
> > >Subject: Re: [Veritas-bu] Disk to Disk Backups
> > >Date: Wed, 06 Mar 2002 22:11:09 +0100
> > >
> > >We have tried to do diskbackups to see if it's faster, but what we have
> > >seen is that is't faster to use tapes. Our disksubsystem is a STK
> > >SVA9500 and the tapedrives are STK 9940 all using FC
> > >But if you use DLT it could be that it's faster to disk.
> > >
> > >I know about sites where they use STK VSM systems and that should be
> > >fast, but I have never tried that.
> > >
> > >/johnny
> > >
> > >At 11:34 06-03-2002 -0800, you wrote:
> > >>I am researching different ways to do disk to disk backups for faster
> > >>backup and restore times. Does anyone have any suggested hardware
> > >>platforms to do this on. I know that ATL just announced a new
> > >>solution called the DX-30, but wanted to see if anyone else out there
> > >>knew of anything else that works as good. Appreciate your input.
> > >>
> > >>Thanks,
> > >>Rick
> > >>
> > >>_________________________________________________________________
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>
> --
> +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> + John D Stephens UNIX Administration +
> + Texas Instruments 12500 TI BLVD, Dallas +
> + jstephens AT ti DOT com 214-480-6229 +
> +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
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--
=====================
Jeff Kennedy
Unix Administrator
AMCC
jlkennedy AT amcc DOT com
|
