I'm still new to servers and what you can do with them, but this is what the customer requested.
We built and set up a server running Windows SBE 2011 at their home location. They will have a server also set up in their remote location. The customer wants a backup of the files from the remote location to be stored on the home location server AND for them to edit, save, and update the files at the home location to be instantly sent BACK to the remote location. How do I set this up and make it secure? I would imagine there is a way to do it with VPN, however I'm not too familiar with VPN's, so I would need step by step. I also know Dropbox would work, but I don't think that's is either secure enough for them or the best option.