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From: John Baldwin <jhb@freebsd.org>
To: freebsd-hardware@freebsd.org
Date: Mon, 25 Feb 2008 10:26:50 -0500
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Cc: Ivan Voras <ivoras@freebsd.org>
Subject: Re: PC Specifications for Free BSD
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On Sunday 17 February 2008 08:27:29 am Ivan Voras wrote:
> Hammad Tariq wrote:
> > Hi,
> >
> > We have received following specifications from the local supplier
> > regarding the PC specifications for RSG.
> >
> > Can you please provide your feedback on its compatibility.
> >
> >
> > IBM x3250 eServer Xeon Dual Core (3050) 2.13GHz 1024MB (no HDD) CD LAN
> > (ATI RN50 16MB)
>
> A friend of mine had problems with x3250; specifically with the mpt disk
> controller he got shipped with it (LSI 1064E SAS/RAID). The problem
> manifests in low IO performance on the drives and it's apparently
> something in the driver. If you can verify that your machine doesn't
> have this controller, or you don't care about disk IO performance, it's
> a good enough machine.

Did you use SATA disks?  There was a recent patch a few months ago to make the 
mpt(4) driver enable the write-cache on SATA disks.  It may require changing 
a loader tunable to enable it by default though.

-- 
John Baldwin