That's why I built 2 of my boxes, and have them Rsync 2,500 miles away from each other. My brother was nice enough to let me set the backup box in his garage.
I too was mistakenly under the impression that parity was enough to keep my data safe. Once I went over some horror stories in the forums, I duplicated my purchase, built an exact replica of my box, and then set it up at my brother's house.