I am going to get a mac pro (refurbished) within the next month or so. However I realize how small their hard drives are (256GB or so, starting model) and am weighing my options on what to do to expand that space. Currently, I have an iMac/1TB drive that is taken up by 900GB of files; these are Applications, iTunes Library, Projects from over the years, etc. I have an external seagate drive that is 5GB which I store most of my media files on. I am curious on what people with these computers do to keep their computers running fast, but still have room to work.