"provides a simple, lightweight mechanism for replicating files and other resources between remote hosts. RSF is meant to accommodate centralized models (client/server) and decentralized models (peer-to-peer). RSF is based on two XML files: a master fingerprint file and a resource history file. The master fingerprint file contains all the data necessary to execute basic synchronization between two separate versions of the same files. The resource history file contains data on a specific resource to facilitate a rollback or a restore from a pervious version."