Some motherboards have RAID functions for the disks attached ; most often , these RAID functions are done as hardware-assisted RAID .
Firmware controllers often can only use certain types of hard drives in their RAID arrays ( e.g. SATA for Intel Matrix RAID ) , as there is neither SCSI nor PATA support in modern Intel ICH southbridges ; however , motherboard makers implement RAID controllers outside of the southbridge on some motherboards . Before their introduction , a `` RAID controller '' implied that the controller did the processing , and the new type has become known by some as `` fake RAID '' even though the RAID itself is implemented correctly .