[rescue] FS (historical?) PPro 180 or 200, with VRM
Devin L. Ganger
devin at thecabal.org
Fri Apr 7 22:37:21 CDT 2006
Curtis H. Wilbar Jr. wrote:
(2x RAID 5)
> Why not 1 12 drive RAID 5 ?
Performance and the ability to survive more than a single drive failure.
When I went through Veritas Volume Manager training, I remember a
discussion about optimal sizing for RAID5 arrays. I sadly don't recall
the specifics, but apparently there was a sweet spot for the # of
drives; beyond that point, performance fell off pretty steeply. The
instructor was saying that this was a general characteristic of every
hardware RAID setup he'd looked at.
Anyone know what he might have been talking about?
Devin L. Ganger <devin at thecabal.org>
Devin on Earth: http://blogs.thecabal.org/blogs/devin/
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