[CentOS] SiL311x SataRaid (sata_sil)

[Brian Parish]

On Sunday 19 June 2005 01:47, Dag Wieers wrote:
> On Sun, 19 Jun 2005, Brian Parish wrote:
> > On Sunday 19 June 2005 00:58, Dag Wieers wrote:
> > > On my x86_64 system I have a SiL311x controller that can do RAID. If I
> > > configure my 2 identical disks in a RAID1 setup, I would expect to see
> > > only 1 block device on Linux. Still I see 2 block devices.
> > >
> > > Is this intentional, and if so, isn't that dangerous ? (i.e. writing to
> > > both disks at the same time)
> > >
> > > Anyone with an insight, please explain :)
> >
> > Not REAL RAID - requires a Windoze driver to make it work.  Software RAID
> > is your friend unless you want to spring for a 3ware card (not cheap).
>
> Ok, that's what I was suspecting, as I noticed now that the VIA SataRaid
> has the same problem :) Now I understand why people said that some of
> these devices are not real hardware RAID, this works because it needs a
> special driver. (I never understood how a hardware component could do
> that, but never thought about specialized drivers)
>
> I'm used to ServeRAID.
>
> So whatever I configure in the BIOS, it has no effect on Linux, right ?
>
> Thanks,
> --   dag wieers,  dag at wieers.com,  http://dag.wieers.com/   --
> [all I want is a warm bed and a kind word and unlimited power]
> _______________________________________________

No, you can change BIOS settings until your fingers bleed without making any 
difference.  In fact Linux pretty much ignores most of what's in the BIOS in 
any case.  Very handy when wanting to put large drives in old systems!