Sorry, had to look that up. From my brief glance this is not the same thing as I understand it. Intel's RST seems to be just their version of RAID. The Fusion D

Sorry, had to look that up. From my brief glance this is not the same thing as I understand it. Intel's RST seems to be just their version of RAID. The Fusion Drive doesn't seem like a RAID to me. RAID provides speed benefits when data is split across multiple HDDs that can be accessed simultaneously. This doesn't seem to be what Fusion Drive does. For example, on my Win7 machine I have a SSD as my main drive and a HDD for storage. Since space is at a premium on my SSD I can install applications that I rarely use and files for storage on the HDD. Applications that I want to load quickly I install them on the SSD. But I have to do all this manually. Fusion Drive seems to be software in the OS that handles that idea for you. Anything you use constantly will be moved to the SSD for the speed benefit while everything else you rarely use goes to the HDD where speed is not as big a deal.