I'll be purchasing a 2012 iMac 27" when they are released. If I were to purchase the SSD option and the HD but ONLY store stuff on the SSD, is there a way to deactivate the HD? I don't want it randomly waking and checking the HD and slow down response times. (if it does that). Reason is that the cost for the HD is negligible, and would probably help resale in the future. I am assuming most people want large Hard Drives. For my purposes, I don't need a lot of storage. Another thought is if I use the HD for storing files such as pictures, but dont access them, will having the HD slow things down? Hope that makes sense, Thanks!