From: Bill Davidsen <davidsen@tmr.com>
To: Janek Kozicki <janek_listy@wp.pl>
Cc: linux-raid@vger.kernel.org
Subject: Re: 2x6 or 3x4 raid10 arrays ?
Date: Sat, 01 Mar 2008 15:07:59 -0500 [thread overview]
Message-ID: <47C9B79F.1050906@tmr.com> (raw)
In-Reply-To: <20080228215339.6674f29d@absurd>
Janek Kozicki wrote:
> Janek Kozicki said: (by the date of Thu, 28 Feb 2008 19:25:00 +0100)
>
> sorry about replying to myself.
>
> * two 6 disks raid10 arrays : theoretical max speed 6 times single disc
> * three 4 disks raid10 arrays : theoretical max speed 4 times single disc
> * single raid10 far=2 : theoretical max speed 12 times single disc (!)
>
> isn't that true?
>
>
True for throughput, not for seek. Also, what I have seen and read
indicates that smaller chunks help a lot for database with lots of seeks.
--
Bill Davidsen <davidsen@tmr.com>
"Woe unto the statesman who makes war without a reason that will still
be valid when the war is over..." Otto von Bismark
next prev parent reply other threads:[~2008-03-01 20:07 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-28 10:45 2x6 or 3x4 raid10 arrays ? Franck Routier
2008-02-28 11:22 ` 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 [this message]
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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