backup, test backups, test recovery
so you're a neat shop, have recovery plan, regular, tested backups for the really important.
but even in a neat shop there are other things to backup. you can do some "irregular" backups for the not so importants, plus review and clean up outdated, details-forgotten temporary copies created in emergency situations
if only the first part of the first sentence is true, than just simply do irregular backups, test them, and so on.