GitLab melts down after wrong directory deleted, backups fail
theregister.co.uk
theregister.co.uk
Articles like these crop up periodically on HN. They're very useful because they reiterate the point about the necessity of testing the backups.
Since moving almost all servers I use to VM's, my backup restore success rate is very high. We generally take a VHD image at least once a week, and then daily processes (maybe even hourly for databases) will run inside the OS itself.