Kind of similar to this question, but I wanted to talk specifically about backing up 200+GB of data. I am an amateur photographer with 3 years of high resolution PSD's and RAW files filling up my hard drives. Current capacity is about 250GB or so, but it is increasing since I got a higher resolution camera.
Currently I have a simple linux based NAS, but that will run out of space soon, and it lives in the closet next to my workstation, so if the house burns down, everything will still be gone.
What other (hopefully moderately priced) options are there? I looked at S3, but I think that would be too expensive based on the volume of data. Maybe even something as simple as another external drive backed up periodically and moved via sneakernet?
EDIT: To be a little clearer, I'm not so worried about local backup, but offsite.