Re: Oracle performance on RAID5 vs. multiple mirrored disks

From: Connor McDonald <connor_mcdonald_at_yahoo.com>
Date: Tue, 11 Jan 2000 21:03:55 +0800
Message-ID: <387B2A3B.374D@yahoo.com>

Giovanni Clayden wrote:
>
> Hi,
>
> I'm interested in views on the performance differences between Oracle on
>
> RAID5 vs. multiple mirrored disks. I'm aware that there is generally a
> write performance hit, with RAID, but how does RAID compare in terms of
>
> read performance? Can anyone share their experience?
>
> Many thanks
>
> Giovanni

Mirrors work well in reads since (a good) LVM will send the read request to both 'sides' of the mirror and take the quickest response. A mirrored stripe, or a striped mirror can improve things even more.

HTH
--

---

Connor McDonald
"These views mine, no-one elses etc etc" connor_mcdonald_at_yahoo.com

"Some days you're the pigeon, and some days you're the statue." Received on Tue Jan 11 2000 - 07:03:55 CST