Re: RAID 5 vs. Mirror

For really critical data that requires high access speed, you may consider RAID 0+1 that's a mirroring of a stripe set.
It's indeed a very expensive solution but it offers redundancy.

Rgds,
Wai Sum

Andrew Babb wrote:

> Oracle does not mind about Raid 5 or Mirroring. In the last company, we used both
> Raid 5 (Clients stipulation for cost) and Mirroring (for disaster failure).
>
> If you want the best of both worlds, I would suggest Mirroring (or Oracle
> Membering) for the Redo Logs, on there own disks assuming large throughput, and
> then if you cannot justify Mirroring on the Data files, then use Raid due to the
> resilience it offers, but watch out for the Raid 5 got-yas.
>
> You should be able to find a reasonable White Paper within
> http://technet.oracle.com
>
> Rgds
> Andrew
>
> "Joe M." wrote:
>
> > Hello,
> > Does Oracle have any problems working with RAID 5. Would it be better to use
> > disk mirroring? Can anyone point me to a white paper or resource on this?
> >
> > Thanks,
> > Joe
> >
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Received on Thu Apr 22 1999 - 04:12:23 CDT