Re: RAID 5 and postgresql

From: "Sander Steffann" <s(dot)steffann(at)computel(dot)nl>
To: "Alex Turner" <armtuk(at)gmail(dot)com>, "Scott Marlowe" <smarlowe(at)g2switchworks(dot)com>
Cc: "Hrishikesh Deshmukh" <hdeshmuk(at)gmail(dot)com>, "Postgresql-General" <pgsql-general(at)postgresql(dot)org>
Subject: Re: RAID 5 and postgresql
Date: 2006-01-21 13:09:54
Message-ID: 000e01c61e8b$f9852da0$96c8a8c0@balefirehome
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Hi,

> I would suppliment this with just saying that your controller card is
> your performance,
> the only cards I've seen score well on linux, and people have
> expressed on this list for SCSI are the LSI card, for SATA, LSI, 3ware
> (now AMCC) and Areca claim good linux support and seem to work well.
> Steer full clear of Adaptec, Dell and Compaq controllers, and their
> linux support is abysmal, and the performance reflects that,
> particularly in RAID 5.

Dell has used (and rebranded) Adaptec and LSI controllers for their PERC
series, and I agree that the Adaptec controllers perform badly. As far as I
know the LSI based controllers are quite good (and some come with 256MB
battery backed cache, which is nice :-)

Sander.

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