5 best practices for preserving data integrity in your backups
A backup isn't really a backup unless it's been tested.

We all know that data loss happens and that we should be backing up our data periodically, even if we don't always put that knowledge into consistent practice. Maybe you have copies of your data on various external hard drives, which is better than no backups but still isn't a proper backup strategy. You might have a self-hosted backup solution that automatically backs up your devices, which is most of the way towards the end goal.