What is replication?
Replication is a program that applies changes to the data at one location, and applies those changes to the data at another. This allows 2 or more clinics that have the same data to see and edit information between each other over an internet connection. This also includes patient links, and can optionally allow for settings management between offices. 

How does it work? 
Whenever something is added or changed in the main VE program and data, that information is stored in a log file on the clinic server. Replication will read through these log files in sequence, and apply them to the other locations in a Replication group. One location (The ReplicationMaster) will apply all of the changes from the other locations (Remotes) to itself, then resend those changes to the remotes. This is all done through the same type of connection that VE uses to connect to clinic servers.

What is needed to replicate?

1. Stable internet connection at all locations
   
2. ISP must be able to provide a static address to all locations OR all locations joined to a VPN
   
3. IT or VE support having access to router admin for port management (Not required for VPN, usually)
   
4.  If the master and remotes have existing information that is not already shared, development will need to sync the databases and put the new version in all locations