Alright, I am sure it's been asked. I am sure I can find tons of info on Google, but I'd rather ask here. I have 1 500GB SATA drive as my main drive. I have 1 500GB SATA drive as my storage/backup drive. Now I should be getting a new hard drive (500GB or 750GB) Can I, and how can I add that new harddrive to that backup drive, without losing everything or moving it? And what would be the best type of raid to use as a storage/backup drive? If I wanted to add even more drives later as well. Any tips and suggestions would be awesome.