From: Glyn Astill <glynastill@yahoo.co.uk>
To: Scott Marlowe <scott.marlowe@gmail.com>
Cc: Steve Clark <sclark@netwolves.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Perc 3 DC
Date: Mon, 24 Nov 2008 15:06:02 +0000 (GMT)
Message-ID: <193090.19304.qm@web23608.mail.ird.yahoo.com> (raw)
In-Reply-To: <dcc563d10811240652g7a511ddye7b2aa2c7d66cbd1@mail.gmail.com>
--- Scott Marlowe <scott.marlowe@gmail.com> wrote:
> >
> > Yeah the battery is on there, and in the BIOS it says it's
> "PRESENT" and the status is "GOOD".
>
> If I remember correctly, older LSI cards had pretty poor
> performance
> in RAID 1+0 (or any layered RAID really). Have you tried setting
> up
> RAID-1 pairs on the card and then striping them with the OS?
>
Not yet no, but that's a good suggestion and I do intend to give it a
whirl. I get about 27MB/s from raid 1 (10 is about the same) so
hopefully I can up the throughput to the speed of about one disk with
sw raid.
For kicks I did try raid 5 on it; 6.9MB/s made it hard to resist
going to get the hammer, which is still a very attractive option.
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To: pgsql-performance@postgresql.org
Cc: glynastill@yahoo.co.uk, scott.marlowe@gmail.com, sclark@netwolves.com
Subject: Re: Perc 3 DC
In-Reply-To: <193090.19304.qm@web23608.mail.ird.yahoo.com>
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