I'm thinking about getting one of these. I don't know anything about them. I just received about 20 quatrillion family photos and I want to put them on a separate drive, along with some music, and maybe back up my system. I'm pretty uninformed on these matters. I am looking for something around 200 GB, but open to modifying that. Once I finished my project, I wouldn't use it that often. Any advice on brands or anything?