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. I'm not too familiar with these technologies here so I may be missing something. [1] https://www.intel.com/content/www/us/en/architecture-and-technology/rapid-storage-technology.html
