On Mon, Nov 23, 2020 at 02:28:20PM +0200, Mika Westerberg wrote: > On Mon, Nov 23, 2020 at 11:38:01AM +0000, Christoph Hellwig wrote: > > The point is: these AHCI controllers do not support RAID in form > > despite the confusing naming. > > Are you sure? > > I looked at the Emmitsburg data sheet and it actually seems to support > some sort of RAID but it requires some special Rapid Storage Technology > [1] drivers from Intel. Probably the idea is that when in "RAID mode" > the thing, as AHCI spec says, does not announce itself to be AHCI > compliant which makes Windows inbox AHCI driver to not to load, and this > allows the Intel propriatery driver to load that then takes advantage of > this somehow. Yes, and that is purely (badly implemented) software RAID.
