From: Dimitri Fontaine <dfontaine@hi-media.com>
To: pgsql-performance@postgresql.org
Cc: Tore Halset <halset@pvv.ntnu.no>
Subject: Re: dell versus hp
Date: Tue, 6 Nov 2007 12:53:44 +0100
Message-ID: <200711061253.46756.dfontaine@hi-media.com> (raw)
In-Reply-To: <82607932-FC46-4B73-BF78-2290EE55F7F5@pvv.ntnu.no>
References: <82607932-FC46-4B73-BF78-2290EE55F7F5@pvv.ntnu.no>
Hi List,
Le mardi 06 novembre 2007, Tore Halset a écrit :
> 1) Dell 2900 (5U)
> 8 * 146 GB SAS 15Krpm 3,5"
> 8GB ram
> Perc 5/i. battery backup. 256MB ram.
> 2 * 4 Xeon 2,66GHz
In fact you can add 2 hot-plug disks on this setup, connected to the
frontpane. We've bought this very same model with 10 15 rpm disks some weeks
ago, and it reached production last week.
So we have 2 OS raid1 disk (with /var/backups and /var/log --- pg_log), 2
raid1 disk for WAL and 6 disks in a RAID10, the 3 raids managed by the
included Perc raid controller. So far so good!
Some knowing-better-than-me people on #postgresql had the remark that
depending on the write transaction volumes (40 to 60 percent of my tps, but
no so much for this hardware), I could somewhat benefit in setting the WAL on
the OS raid1, and having 8 raid10 disks for data... which I'll consider for
another project.
Hope this helps,
--
dim
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To: pgsql-performance@postgresql.org
Cc: dfontaine@hi-media.com, halset@pvv.ntnu.no
Subject: Re: dell versus hp
In-Reply-To: <200711061253.46756.dfontaine@hi-media.com>
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