From: Joshua D. Drake <jd@commandprompt.com>
To: Jignesh K. Shah <J.K.Shah@sun.com>
Cc: Franck Routier <franck.routier@axege.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: 12 disks raid setup
Date: Fri, 29 Feb 2008 09:50:50 -0800
Message-ID: <20080229095050.7dffd23d@commandprompt.com> (raw)
In-Reply-To: <47C83E29.8060701@sun.com>
References: <1204285894.11773.33.camel@franck-gusty>
<47C83E29.8060701@sun.com>
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On Fri, 29 Feb 2008 12:17:29 -0500
"Jignesh K. Shah" <J.K.Shah@sun.com> wrote:
>
>
> Franck Routier wrote:
> > Hi,
> >
> > I am in the process of setting up a postgresql server with 12 SAS
> > disks.
> >
> > I am considering two options:
> >
> > 1) set up a 12 disks raid 10 array to get maximum raw performance
> > from the system and put everything on it (it the whole pg cluster,
> > including WAL, and every tablespcace)
I would do this (assuming you have other spindles for the OS):
/data1 - RAID 10 journalled filesystem + 1 (so 9 disks)
/xlogs - RAID 1 non journalled filesystem + 1 (so 3 disks)
You can create any number of tablespaces for further growth you see fit
and move them as more IO becomes available.
Sincerely,
Joshua D. Drake
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To: pgsql-performance@postgresql.org
Cc: jd@commandprompt.com, J.K.Shah@sun.com, franck.routier@axege.com
Subject: Re: 12 disks raid setup
In-Reply-To: <20080229095050.7dffd23d@commandprompt.com>
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