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Date:      Tue, 30 Nov 2004 21:37:46 -0800
From:      "David O'Brien" <obrien@freebsd.org>
To:        Mike Jakubik <mikej@rogers.com>
Cc:        stable@freebsd.org
Subject:   Re: No RAID for VT8237?
Message-ID:  <20041201053746.GA3642@dragon.nuxi.com>
In-Reply-To: <1988.172.16.0.200.1101868699.squirrel@172.16.0.200>
References:  <4013.172.16.0.200.1101790160.squirrel@172.16.0.200> <41AC1A0D.1020705@speakeasy.net> <4460.172.16.0.200.1101798279.squirrel@172.16.0.200> <6.2.0.14.2.20041130110542.03fdced0@gid.co.uk> <20041130230659.GA30089@hub.freebsd.org> <1988.172.16.0.200.1101868699.squirrel@172.16.0.200>

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On Tue, Nov 30, 2004 at 09:38:19PM -0500, Mike Jakubik wrote:
> David O'Brien said:
> 
> > There are many new SATA "RAID" controllers that our ATA driver doesn't
> > yet understand the metadata.  Soren is working on support for these newer
> > chipsets.
> 
> Understood, but what im saying is that a list of supported ones would be
> very useful when trying to decide what hardware to buy.

The problem is that the RAID metadata isn't identical for all
motherboards that use the same SATA controller -- it is dependent on the
BIOS also.  For instance, I have an Iwill DK8X that has a Silicon Image
3114 controller.  On many motherboards using the SiI 3114 FreeBSD knows
the RAID metadata, however on this motherboard FreeBSD doesn't --
because my BIOS does things differently than other motherboards with a
SiI 3114.

-- 
-- David  (obrien@FreeBSD.org)



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