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From: Franck Routier <franck.routier@axege.com>
To: linux-raid@vger.kernel.org
Subject: 2x6 or 3x4 raid10 arrays ?
Date: Thu, 28 Feb 2008 11:45:54 +0100	[thread overview]
Message-ID: <1204195554.16924.16.camel@franck-gusty> (raw)

Hi,

I am installing a database (postgresql) server.
I am considering two options:
- either setup two 6 disks raid10 arrays
- or setup three 4 disks raid10 arrays

You guessed I have 12 disks :)

Raw performance is better on 6 disks arrays, but having 3 arrays allows
me to setup 3 tablespaces and maybe to achieve better parallelism.

I am under the impression that I will get better results with requests
spread over 3 less effective arrays rather than two slightly more effive
one.

Does it make any sense, or am I totally missing the point ?

Thanks,
Franck



             reply	other threads:[~2008-02-28 10:45 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-28 10:45 Franck Routier [this message]
2008-02-28 11:22 ` 2x6 or 3x4 raid10 arrays ? Tim Southerwood
2008-02-28 16:54 ` Brendan Conoboy
2008-02-28 18:25 ` Janek Kozicki
2008-02-28 20:53   ` Janek Kozicki
2008-02-28 21:04     ` Brendan Conoboy
2008-03-01 20:07     ` Bill Davidsen
2008-03-01 20:55       ` Keld Jørn Simonsen
2008-02-28 22:36 ` Nat Makarevitch
2008-03-01 20:40   ` Keld Jørn Simonsen
2008-03-01 21:10     ` Keld Jørn Simonsen
2008-03-01 22:05     ` Nat Makarevitch
2008-03-02  0:30       ` Keld Jørn Simonsen
2008-03-02  9:00         ` Nat Makarevitch
2008-03-01 20:18 ` Bill Davidsen

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