Date: Fri, 17 Jun 2005 10:27:15 +0200 From: Pav Lucistnik <pav@FreeBSD.org> To: obrien@FreeBSD.org Cc: freebsd-amd64@FreeBSD.org Subject: Re: Which motherboard for RAID in AMD64? Message-ID: <1118996835.79280.10.camel@pav.hide.vol.cz> In-Reply-To: <20050617081853.GG1485@dragon.NUXI.org> References: <20050604234246.G69694@zoraida.natserv.net> <200506050949.54551.groot@kde.org> <20050607113123.R97707@zoraida.natserv.net> <200506071749.28840.groot@kde.org> <20050617081853.GG1485@dragon.NUXI.org>
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David O'Brien p=ED=B9e v p=E1 17. 06. 2005 v 01:18 -0700:
> On Tue, Jun 07, 2005 at 05:49:28PM +0200, Adriaan de Groot wrote:
> > On Tuesday 07 June 2005 17:32, you wrote:
> > > On Sun, 5 Jun 2005, Adriaan de Groot wrote:
> > > > Via KT800's embedded RAID which shows up as atapci1: <VIA 6420 SATA=
150
> > > > controller> works as a RAID controller; configure the RAID array be=
fore
> > > > installation and use ar0 as the device to install FreeBSD to.
> > > >
> > > > Promise 20378 RAID which shows up as atapci0: <Promise PDC20378 SAT=
A150
> > > > controller> works as a RAID controller; same deal.
> > > >
> > > > My K8V has both of these controllers,
> > >
> > > I am a little confused. Do you have one of those onboard and the seco=
nd as
> > > a pci card?
> >=20
> > Lots of motherboards have two RAID controllers on board. See, the VIA K=
T800=20
> > chipset has one and some vendors add a second, like a promise, for adde=
d=20
> > value. 4 SATA connectors on the motherboard, on two different controlle=
rs.
>=20
> Why do so many motherboard manufacturers do that? Is the SiI or Promise
> RAID controller ready better than the VIA one?
Marketing advantage. Boards with four SATA connectors (2 controllers)
sell better than boards with two SATA connectors (single controller).
--=20
Pav Lucistnik <pav@oook.cz>
<pav@FreeBSD.org>
If God is perfect, why did He create discontinuous functions?
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