With AeroFS's peer-to-peer syncing technologies, you actually don't need file servers at all. Data will sync automatically between devices and users, without first having to upload it to a central server.
If you do need to back up and sync all your data to a central location, AeroFS allows you to convert your old-fashioned file server into an AeroFS Team Server. The AeroFS Team Server gives you the functionality of a file server, with the additional magic of AeroFS: automatic file versioning, sharing management, seamless sync and sharing, and many more features.
The Team Server is transparent to the end user: users no longer need to go to a "shared drive" or make sure that they're on the local network to sync data to your servers. In fact, the users don't need to do anything special at all.
AeroFS users simply place files into their AeroFS folder as they would otherwise and the data will automatically sync to the AeroFS Team Server as well as their other devices.