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

Scott Marlowe wrote:
> 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... :) )

Oh come on... Adaptec makes a great skeet.

Joshua D. Drake


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