Yes the Snapshot is mandatory when using our built in backup function. The Backup provides Full, Incremental and Differential with a task scheduler.

Below is more information as to what size to set your Snapshot backup and other backup information that might be of use to you.


Snapshot info:
http://kb.open-e.com/entry/48/

Backup info:

http://kb.open-e.com/entry/102/

http://kb.open-e.com/entry/112/