What I did was put in a 250GB Samsung SDD and bought a CD Sata Drive Enclosure and put my existing HDD into that so I have both the SDD and a higher capacity (650GB in my case) normal HDD drive for storage. In fact what I do is about every month or two I move all my data files from the 650GB drive to one of my external HDD and make a clone of the SDD onto the 650GB drive and them put the data files back on the 650GB drive. That way I have a clone type back up readily available should the need occur.
Larry