Hi, maybe interesting for some out there, maybe you want to add some tips and tricks to be able to backup the configuration on the fly.

in addition to the "what to backup" in the official documentation:
Novell Documentation

To Dump the Database uncompressed: NOTE: YOURDB and YOURUSER are shown in the webadmin of the DataSynchronizer

pg_dump -U YOURUSER YOURDB > datasync_backup

Also very Useful:
To Dump compressed: pg_dump -U YOURUSER YOURDB | gzip > datasync_backup.gz

do this at your own risk; and we are talking about backup here, nobody said anything about restore! that is to be tested beforehand.

havent found how to automate it yet as passwords would either be globally set to off or not in the postgresql environment according to postgresql documentation.