Re: Help with Virgin RAID system

In article <7r3gvh$4q3$1_at_winter.news.rcn.net>,   "Jerry Gitomer" <jgitomer_at_hbsrx.com> wrote:

Performance on RAID 5 is worst. I suggest you go for 0 + 1.

> Hi Darren,
>
> Just make sure that you have a mirrored drive outside of the
> RAID 5 configuration for you redo logs. Space permitting you may
> also want to keep your archives on that drive. If you can't get
> a mirrored drive start complaining now and make sure that your
> management knows that you will be taking a substantial
> performance hit (I have attempted to remove this experience from
> my memory -- it was that bad. The conflicts were so severe that
> when we moved redo logs off of the RAID 5 our performance
> doubled! I have no idea if this was an extreme situation or
> normal for RAID 5 and I have no intention of trying to find out.)
>
> As far as the RAID array is concerned,I don't know about
> Sun's RAID 5, but the ones I have worked with don't give you
> access at the drive level. The entire RAID 5 is treated as a
> single volume.
>
> Regards
> Jerry Gitomer
>
> Darren John Capper wrote in message
> <37D37FA3.ACA7B5B9_at_preci-spark.co.uk>...
> >Oracle Guru's,
> >
> >My company has just purchased a Sun Enterprise server along with
> a RAID
> >array (RAID 5 I think). It's going to be about two months
> before I get
> >my hands on it and I was wondering how RAID will affect my
> Oracle
> >setup. Do I need to be concerned with which disk a particular
> table is
> >on or will RAID stripe it anyway?
> >
> >Any comments or pointers in the right direction will be greatly
> >appreciated.
> >
> >Regards,
> >Darren
> >
>
>

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Share what you know. Learn what you don't. Received on Tue Sep 07 1999 - 15:45:46 CDT