Our company currently has an internal marketing/graphic design department. We have 4x graphic designers on iMacs and a 2012 Mac mini running as a File Server where all their files/data is stored. A thunderbolt to ethernet adapter, Link aggregation, and a compatible Gigabit switch keeps everything working smoothly. In about a month, we're going to be more or less duplicating the setup in a second location about 15 miles away. Each location will have 3 graphic designers and while the designers in each location will mostly be working on files/projects related to their area, our goal is to be able to have anyone be able to open and work on any project when needed. We're talking large Adobe Indesign projects and associated file links which are mostly high-res images, so "streaming files" over the internet is not my first choice. I am looking for opinions and suggestions for the best way to enable collaboration/sync between the two locations. There is no need for high availability, meaning the sync can complete overnight.