Which motherboard for RAID in AMD64?

[David O'Brien]

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 SATA150
> > > controller> works as a RAID controller; configure the RAID array before
> > > installation and use ar0 as the device to install FreeBSD to.
> > >
> > > Promise 20378 RAID which shows up as atapci0: <Promise PDC20378 SATA150
> > > 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 second as
> > a pci card?
> 
> Lots of motherboards have two RAID controllers on board. See, the VIA KT800 
> chipset has one and some vendors add a second, like a promise, for added 
> value. 4 SATA connectors on the motherboard, on two different controllers.

Why do so many motherboard manufacturers do that?  Is the SiI or Promise
RAID controller ready better than the VIA one?
 
-- 
-- David  (obrien at FreeBSD.org)