Re: Performance query about large tables, lots of concurrent access

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Andrew Sullivan wrote:
On Thu, Jun 21, 2007 at 12:29:49PM -0400, Karl Wright wrote:
I checked the disk picture - this is a RAID disk array with 6 drives, with a bit more than 1Tbyte total storage. 15,000 RPM. It would be hard to get more/faster disk than that.

What kind of RAID?  It's _easy_ to get faster disk that 6 drives in
RAID5, even if they're 15,000 RPM.  The rotation speed is the least
of your problems in many RAID implementations.
Also, the controller means a lot. I'd rather have a 4 disk RAID-10 with an Areca card with BBU Cache than a 16 disk RAID 5 on an adaptec (with or without cache... :) )


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