Kathy dropped her external hard drive on the floor and now it's not working. It wasn't even that far. Leo says that's just bad luck: it's likely a broken arm or scratched sector. DriveSavers could fix it, but it's very expensive. And if they can't, then nobody can. This is why you back up. Leo recommends a 3-2-1 backup strategy: three backups, on two different formats, one off-site.