Our main office consists of 2 domain controllers, 1 Exchange server, 1 File Server and 5 users.
We have a branch office around 5 miles away that consists of 2 desktop PCs and 2 users.
We would like the branch office to connect to our file server so that we have one centralized area for files and backup.
What is the best way to connect our branch office to our head office domain?
I'd like to refrain from setting up a DC in the branch office for 2 users if possible.