Hello,
We have 6 servers hitting our NetApp 760 with about 25 instances.
Love love love the filer.
I have not seen a problem with the database even if the network goes
down for some time (20 minutes and more).
The only hiccup I have seen is if the filer is rebooted while databases
are operating. A control file that is located on the filer may have a
lock held against it when it comes back up. We run 1 filer and
2 local control files. If that happens, delete the filer based control
file and replace it with a copy from the local set. Then your database
will restart.
Cheers,
Joe
At 09:35 AM 8/20/02 -0400, Brian Long wrote:
> > 1. How does performance really stack up compared with a DAS or SAN
> > solution? Does the IP stack -vs- SCSI stack cause a significant
> > performance lag?
>
>Robin,
>
>It all depends on which Unix platform you run Oracle. Solaris' NFS client
>in any release before Solaris 9 has a huge bug that slows down
>performance. Try exporting a filesystem on your Solaris host and mounting
>localhost:/filesystem. Then try some benchmarks...they stink. As I
>understand it, the HP-UX nfs client does not have these issues and
>performs well with NAS.
>
> > 2. Are there compelling reasons why this would be a preferred solution?
>
>Netapp features: instant snapshot, snapmirror, snaprestore. These
>features are critical in an Oracle (and Clearcase) implementation.
>
> > 3. Are there compelling reasons why this solution should be avoided?
> >
> > 4. What are the gotchas of such a solution? Are there configuration
> issues that can trip you up?
>
>NFS over UDP is sometimes recommended by Netapp SE's to avoid TCP
>overhead. TCP is preferable in my opinion.
>
>I have not personally implemented Oracle on NAS, but I've been in contact
>with folks in my company who have played with it. The Solaris gotcha is
>the big problem. If you're using ORacle on HP-UX, try it out.
>
>/Brian/
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