I'm not the IT guy in the family, my hubby is, but here's what we do. I keep hard copies of all important docs, along with a flash drive of scans, in a fire box in my desk. He keeps a back-up of everything (including scans of all docs) on an external hard drive. The plan is to grab both in the event of an emergency. There's also a flash drive of scans in our famly BOB.