Hi, @esurface
A couple of extra pointers:
- You could set up a periodical task to launch Briefcase to pull from the main server and push it to the secondary server.
Here's the guide about Working from the command-line (Briefcase)
To launch Briefcase periodically, you can use the Windows Scheduler on Windows, or cron on macOS and Linux - Here you have a detail guide about Aggregate data management with useful information and tools: the guide and a follow-up post.