From: Luke Lonergan <llonergan@greenplum.com>
To: Alex Turner <armtuk@gmail.com>
To: Bucky Jordan <bjordan@lumeta.com>
Cc: Merlin Moncure <mmoncure@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Large tables (was: RAID 0 not as fast as
Date: Mon, 18 Sep 2006 18:14:39 -0700
Message-ID: <C134928F.316FC%llonergan@greenplum.com> (raw)
In-Reply-To: <33c6269f0609181614h32d2d379k99b313530ce2ab0f@mail.gmail.com>
Alex,
On 9/18/06 4:14 PM, "Alex Turner" <armtuk@gmail.com> wrote:
> Be warned, the tech specs page:
> http://www.sun.com/servers/x64/x4500/specs.xml#anchor3
> doesn't mention RAID 10 as a possible, and this is probably what most would
> recommend for fast data access if you are doing both read and write
> operations. If you are doing mostly Read, then RAID 5 is passable, but it's
> redundancy with large numbers of drives is not so great.
RAID10 works great on the X4500 we get 1.6GB/s + per X4500 using RAID10 in
ZFS. We worked with the Sun Solaris kernel team to make that happen and the
patches are part of Solaris 10 Update 3 due out in November.
- Luke
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To: pgsql-performance@postgresql.org
Cc: llonergan@greenplum.com, armtuk@gmail.com, bjordan@lumeta.com, mmoncure@gmail.com
Subject: Re: Large tables (was: RAID 0 not as fast as
In-Reply-To: <C134928F.316FC%llonergan@greenplum.com>
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