Miradore server is automatically creating a snapshot of the Miradore databases periodically.
The location of the snapshot is by default: C:\Program Files\Miradore\Server\Backup
Names of the snapshot files are <name of the database>.bak and master.bak
The snapshot running interval and time can be modified from the Scheduled Tasks on the server. Scheduled task name is MDBackup.
Check regularly that the database snapshots are being created.
Add the Miradore server directory (by default: C:\Program Files\Miradore\Server) to your backup system and run the backup at least once per day