Originally Posted by lilhasselhoffer
AHCI and RAID options on a motherboard are splitting hairs. AHCI technically allows RAID, but often introduced compatibility issues in some drives. In order to address this some vendors have AHCI, RAID, and IDE modes to allow everything to work. RAID mode will do everything AHCI does. AHCI lacks proper RAID support, but it will work with almost any drive. IDE works with all drives, but doesn't do RAID.
Good summary. The article I linked talked about AHCI being a subset of RAID.
The only drawback of setting up a single drive as RAID would be possible compability, correct? And that can be overcome with drivers.
Both AHCI and RAID support "hot swapping" from what I've read, while IDE does not.