Just got my 1st Wii U. Has the 32GB HDD, but with MK8 pre-loaded, it's already getting full. I have a 160GB HDD that I have currently set up as a back-up and am currently only using it to back-up the game files and normally have it off otherwise. Looking for ideas on how others use theirs? May sound like a stupid question, but having that thing run all of the time seems like it wouldn't be good for it. Or maybe I'm being too sensitive about it. Another one of the things is that it has to be a powered external drive. Too bad it can't just be a HDD that can just be powered off of the USB.