Shopaholic? Me?

Hubby just said that we should back up all our computers. He thinks that at the very least we should do it on a yearly basis. I think he wants to go with an online backup because then they cannot be stolen or if lightening hits wiped out. But I like the idea of a portable hard disk or just copying to DVD but then I am not the techno geek! The only thing I do know is unlike shopaholic Carrie (Sarah Jessica Parker) in Sex in the City, I will er hopefully be protected!