[This is a beta / fast-ring feature. Feel free to play with it but we know there will be some quirks. This is one of those features that may or may not graduate to a production feature.]
This feature relates to the COPY TO SERVER (aka SITE SYNC) feature in the core plugin. With this new daily automated copy, you can setup a server process to execute the COPY TO SERVER function once per day on any site.
The option appears in the COPY TO SERVER tab on each site in a section titled DAILY SYNC:
All you have to do is select your destination server and then click SCHEDULE.
All the caveats outlined in the docs for the Copy To Server feature apply to this function as well – so make sure you familiarize yourself with them before using this expanded feature.