Date: Mon, 22 Nov 2004 14:26:14 -0500 From: David Gilbert <dgilbert@dclg.ca> To: Charles Sprickman <spork@fasttrackmonkey.com> Cc: David Gilbert <dgilbert@dclg.ca> Subject: Re: List of fake vs. real SATA drives. Message-ID: <16802.15702.58144.76512@canoe.dclg.ca> In-Reply-To: <Pine.OSX.4.61.0411221417120.787@oof.local> References: <16798.12075.465147.307112@canoe.dclg.ca> <864qjixdpi.wl%sf@FreeBSD.org> <41A1FB7D.9000308@jonny.eng.br> <Pine.OSX.4.61.0411221417120.787@oof.local>
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>>>>> "Charles" =3D=3D Charles Sprickman <spork@fasttrackmonkey.com> wr=
ites:
Charles> On Mon, 22 Nov 2004, [ISO-8859-1] Jo=E3o Carlos Mendes Lu=EDs
Charles> wrote:
>> What is the practical diference? Performance?
Charles> I don't know how much of it to believe, since it is marketing
Charles> material, but the Seagate white paper on their site claims
Charles> that all the command-queueing stuff brings the performance
Charles> very close to that of scsi.
Charles> This last weekend I put together a box with a 3Ware SATA RAID
Charles> controller and two of the Seagate drives. The controller is
Charles> probably a bit of a bottleneck, but that sucker was still
Charles> incredibly fast for the price (about $300 for the controller,
Charles> $100 for for each of the two Seagate 160GB drives). At $2
Charles> per mirrored gigabyte, I'm not complaining.
Does the 3ware support command queueing ... or is it purely a driver
issue? Does FreeBSD support queueing? Does FreeBSD support queueing
on all supported SATA controllers ... or just some?
Dave.
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|David Gilbert, Independent Contractor. | Two things can only be =
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|Mail: dave@daveg.ca | equal if and only if t=
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|http://daveg.ca | are precisely opposit=
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