What is geographic replication (aka geo-replication)?
Geographic database replication is a replication system that enables data to be replicated across servers in different (presumably remote) locations. Geographic replication is often part of a disaster-recovery plan. For example, if one data center is hit by a hurricane in Florida, another data center located in Virginia is able to provide redundancy.
Geographic replication means that data is created or updated in a primary location and then asynchronously replicated to another location. The data is backed up in both locations.