So the steps I want to take is:
- Do every hour a rsync (incremental) of the files from the primary to the secondary server.
- The secondary server creates an tar-ball of the rsynct files.
- The secondary server takes care of the retention period (14 days)
If I have the backup-scripts ready, I will publish them.
And because rsync is going to check every hour incremental, the load of the line will be more stable and it will drop the number of data traffic.