Re: raid10 write performance

From: Ivan Voras
Subject: Re: raid10 write performance
Date: ,
Msg-id: hvsmbq$gok$1@dough.gmane.org
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In response to: Re: raid10 write performance  (Greg Smith)
Responses: Re: raid10 write performance  (Florian Weimer)
Re: raid10 write performance  (Scott Marlowe)
List: pgsql-performance

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raid10 write performance  (Grzegorz Jaśkiewicz, )
 Re: raid10 write performance  (Justin Graf, )
  Re: raid10 write performance  (Karl Denninger, )
   Re: raid10 write performance  (Dave Crooke, )
   Re: raid10 write performance  (Scott Carey, )
 Re: raid10 write performance  (Greg Smith, )
  Re: raid10 write performance  (Ivan Voras, )
   Re: raid10 write performance  (Florian Weimer, )
    Re: raid10 write performance  (Ivan Voras, )
     Re: raid10 write performance  (Matthew Wakeling, )
     Re: raid10 write performance  (Scott Marlowe, )
   Re: raid10 write performance  (Scott Marlowe, )

On 06/22/10 16:40, Greg Smith wrote:
> Grzegorz Jaśkiewicz wrote:
>> raid: serveRAID M5014 SAS/SATA controller
>>
>
> Do the "performant servers" have a different RAID card?  This one has
> terrible performance, and could alone be the source of your issue.  The
> ServeRAID cards are slow in general, and certainly slow running RAID10.

What are some good RAID10 cards nowadays?

On the other hand, RAID10 is simple enough that soft-RAID
implementations should be more than adequate - any ideas why a dedicated
card has it "slow"?


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