[TriLUG] Need advise.
Tom Bryan
tbryan at python.net
Tue Oct 23 12:18:02 EDT 2001
On Wednesday 24 October 2001 05:06 am, you wrote:
> > Should have clarified, I meant that RAID 1 is better than RAID 5,
> > especially for a database server. RAID 0+1 would be even more ideal, but
> > more expensive than RAID 1.
>
> I beg to differ. Historically RAID 1 (and 1+0) gave the best performance
> with large files - but with variable file sizes RAID 5 is just as
> fast. With modern controllers RAID 5 often out performs RAID 1 systems.
Last I heard, Oracle's official recommendation was still *against* RAID 5. I
think that the last time they guys tried it at work, they found that
performance wasn't just a little bit worse. At that time, Oracle sucked on
RAID 5 for some reason.
YMMV, but forewarned is forearmed.
---Tom
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