Here is my setup: *2011 MBP *WD 2TB My Book Studio LX (3 partitions 1 TB for Itunes, 750GB for TimeMachine and 250 GB for Misc) *2TB WD Green Caviar internal drive in a MacAlly enclosure. (brand new just formatted) waiting to be used. Would I be better off duplicating my partition scheme onto the new WD Green Caviar and use Carbon Copy Cloner to duplicate each volume onto the new WD Green Caviar. OR would I be better starting over and creating a Raid 1 (Mirrored) of all the partitions. I have another backup of my iTunes, TimeMachine and MISC partitions so if I have to erase the data to start a raid (mirrored) setup that is not a big deal. I can get the backup from the other drives that would not be part of the raid. The way I see the setup is. Raid 1 (mirrored) Three partitions (iTunes, TimeMachine, Misc) all mirrored to the other drive. Or am I just better of leaving my setup as is and manually copying the files to each matching partition via Carbon Copy Cloner. I can easily perform a backup each night by running CCC as needed per partition. Thanks for the help.