I have personal experience now. I installed two Seagate Barracuda 1TB drives and configured them using Storage Spaces to a Simple 2TB drive D: and moved all my data to that "drive". The hardest part was finding the Storage Spaces set up screen. I tried all the obvious places for that kind of setup to be, but no screen to be found. Finally I went back and re read the article from the internet on how to set it up. The secret is to type "storage spaces" on the find bar. Windows 8 is one messed up interface! However, the guts of it does seem to work really well. The drive seems very fast, and I have had no issues with it yet. Have not tried to set up the My Book Live backup system, but I expect it will work fine.