If your backups are automated, you need an automated backup checker in order to ensure your backups are reliable and will work the very day you'll need them https://github.com/backupchecker/backupchecker
#!/bin/sh
find /media/wd1T/backup -mtime -1 | mail -s "Backup Data 1 day old alt mdorf/valun " xx@xxxx.com
Well, that's not right... lol