Yes, I've taken a backup...
I used to support a few small schools. They all ran a product that made running a Windows domain fairly easy. You could add users, push out applications and so on with just a smigeon of training, and each school generally had a single person whose job it was to administarer the system. It was never their day job. Usually they were teachers, sometimes adminstrators.
The sytems were configured with a tape drive and a daily backup was scheduled. One of the admin's tasks was to manage the tapes, swapping the tape each morning and keeing the old one nice and safe. Except some of the admins were a tad forgetful. I found that at several of my sites the same tape had been left in the drive for months or even years. The admins couldn't see how that could be a problem.
You can lead a horse to water ..