Re: hp ciss on freebsd

From: Vivek Khera <khera(at)kcilink(dot)com>
To: PostgreSQL Performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: hp ciss on freebsd
Date: 2007-11-08 16:37:50
Message-ID: 471D13B8-B63C-4059-9477-B1233A844F6C@kcilink.com
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On Nov 5, 2007, at 8:19 AM, Claus Guttesen wrote:

> I will get four 72 GB sas-disks at 15K rpm. Reading the archives
> suggest raid 1+0 for optimal read/write performance, but with a solid
> raid-controller raid 5 will also perform very well when reading.

If you only have 4 drives, I'd recommend not to go with RAID5. You
want to max out spindles. The 256k RAM may not be enough of a cache
too.

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