I would like to enable versioning, so I’m forced to abandon synchronization and move to backup job, is it correct ?

Inside HBS I have an unidirectional synchronization process between two Qnap on geographically distant sites.
The folders involved have slowly changing content, almost static,
so after inital synchronization it is a relatively fast activity, because only modified content is sent through the net.
I would like to enable versioning, so I’m forced to abandon synchronization and move to backup job, is it correct ?
The total size of the folders is 8 TB and all the files are already on destination Qnap, is there a way to use them as initial seeding of the backup job instead of a new massive file transfer ?
Second question: if I have 3 main folders is it better to create a single backup job or one for each folder ?

Are you the same person who posted this thread?

It sounds identical. Please post your questions in just one thread and with the same user name.