How to Synchronous space between two difference Confluence site without cloud

[Alina]

Due to the work requirement and enterprises' net-frame, I want to find a way to Synchronous one space in Confluence site-A to the Confluence site-B. And site-A is physical isolate with site-B. It's look like a very difficult mission because our site-B is not allowed working with any other network and also cloud, it's like a Isolated-Island.

Meanwhile, I have tried "Restore & backup" , but it maybe affects Confluence running so my colleague refuse cooperate with this work and turn down this way. 

So, is there any scheme could solve this work? Or is there any way to solve that with development, like establish a "bridge" or something like that? Any tools, software or platform,...,etc.

Looking forward to your valuable suggestions and schemes.

[Brant Schroeder]

@Alina There used to be an app in the marketplace that would provide that functionality for server but has not been around for sometime.  If you are just taking information form A to B and B is read only, you could always to a VM snapshot and restore.  The environments would need to be setup the same but it would be fairly simple to accomplish.