In case the H2 database has been used, default custo diagnostic will create a backup every day up to a maximum of 40 Days or a maximum size of 1 Gigabyte.
This backup will default be located in C:\diagserverdata\backup
In case you would like to make changes on this settings you can enter the service center and open "diagserver" and choose backup.
You can enable or disable the backup of the database, you can change the maximum number of days ( VIVO system) and you can change the maximum size of the backup allowed.