If you have multiple link targets and want to keep files synchronized among the targets, you'll need to configure Dfs-based replication. To set up replication for a link, perform these steps:
The link targets will now replicate changes automatically, keeping their content in sync. However, depending on where the servers are geographically located, updates might occur on a delayed schedule. Factors affecting the delay include available bandwidth, the amount of modified data being replicated, the FRS topology you're using, and the replication schedule.
One caveat about Dfs replication: It isn't designed to be used with data that changes frequently in multiple locations or in cases where a file might be updated at the same time on different link targets. FRS doesn't merge file changes together; the most recently saved file is the one that's replicated. Therefore, you should use FRS only to replicate static data, such as templates or company policies or data that will be changed at only one location at a time. FRS's main benefit is that it provides a highly available set of data to protect you in the event of a single-server failure.