You will want quite a bit of drive space if you are doing much saving, especially BLU RAY. You will also need some good aftermarket burning software so you may want to do a bit of research before you purchase anything. As far as drive space a terabyte would be a good start, you can always get and external drive for storage once you complete your projects so that you can free up space on your internal drive. As far as the standard built PC internal drives(some are iffy) you might be better off building your own system or replacing the factory installed drive with something more substantial, again, I suggest doing some research.