You’ve taken every precaution against data loss. You do regular backups, which you’ve carefully planned (and even tested).
But, what happens to your precious data when there is a power outage?
Will your file system recover? Properly? Are you sure?
Will you have to resort to your backup, just to be safe?
Maybe you need a UPS. Then again, maybe not. Either way, reading this article will help you to make that decision.