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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Maxim Sobolev <sobomax@FreeBSD.org>
References: <4BD06BD9.6030401@FreeBSD.org> <4BD099E6.6000402@FreeBSD.org>
	<4BD0A689.8000508@thekeelecentre.com> <4BD0ACD2.3040805@FreeBSD.org>
Date: Tue, 27 Apr 2010 15:34:14 +0200
In-Reply-To: <4BD0ACD2.3040805@FreeBSD.org> (Maxim Sobolev's message of "Thu, 
	22 Apr 2010 13:08:50 -0700")
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Cc: Alexander Motin <mav@FreeBSD.org>,
	FreeBSD-Current <freebsd-current@FreeBSD.org>,
	Richard Tector <richardtector@thekeelecentre.com>, freebsd-geom@FreeBSD.org
Subject: Re: Switchover to CAM ATA?
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Maxim Sobolev <sobomax@FreeBSD.org> writes:
> Richard Tector <richardtector@thekeelecentre.com> writes:
> > Could I also add that the removal of ataraid would affect those
> > users who dual-boot with Windows and rely on the psuedo-raid
> > provided by most Intel chipsets to be able to share the same pair of
> > disks.
> Well, this won't be a problem if we have GEOM classes that can
> understand metadata created by the ATA RAID BIOS(es).

Most pseudo-raid kit has nifty features like checksum offloading,
composite writes etc. which can improve performance considerably.  You
can't access those from GEOM.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no