recently posted for some other person about a similar question... my way is to use a BlackX HD docker [single or double] and the seagate 1.5 TB HD's... go look on for these... for less than 205 you can have a very open ended set up ... in fact for about that much I think you could have two 1.5 tb drives and the double slot docker. these work great on mac and pc... and later you can buy more drives and keep on going... make dupe's of your HD's, have more storage, etc.