1 TB? That's a lot. And if you plan on taking a lot of pix, you're gonna run out of space fast. You might consider some type of RAID stack/enclosure so you can swap drives. Then you can add drives as needed.

HP has a MediaSmart Server that is out or about to be. I've seen it and it's quite nice. Also, Data Robotics has Drobo w/ is an nice enclosure.