For my home server i have two 1Tb sata drives for media, both of which are completely full and currently not backed up. I want to buy another two identical 1Tb drives and run them in hardware raid using the on board controller on my motherboard. Problem is (i think) i will need to find another 2Tb of storage to take my stuff off the two 1Tb drives then copy it back on when its in raid. Or do I? Is there a way i can keep the data (which is currently in NTFS) where it is? I dont know anyone with a spare 2Tb of spare storage i could use, and im really not keen to buy one on top of the two 1Tb disks.