"In the last two months I've been traveling a lot. During the same period my main desktop computer went belly up. I would have been in trouble without rsync at my disposal--but thanks to my regular use of this utility, my data (or most of it, anyway) was already copied offsite just waiting to be used. It takes a little time to become familiar with rsync, but once you are, you should be able to handle most of your backup needs with just a short script.
"What's so great about rsync? First, it's designed to speed up file transfer by copying the differences between two files rather than copying an entire file every time..."
