I setup a database. Then I created a table in it. Added a record.
In the Operations tab I created an offline backup and set the timer 5 minutes after the current time. The Auto-backup did not force the database to stop, did not restart it.
Then I tried to do these things myself. I set another timer for offline backup and stopped the database - I thought that the auto-backup didn't work because it cannot stop the database. This didn't work either.
I read that:
Offline backup - Automated backup is executed only when the database stopped running. Forces the database to shut down if it is currently running, performs an automated backup, and then restarts the database.