US Patent 10521403 System and method of providing fault-tolerant file replication

Systems and methods are provided for fault-tolerant file replication. A request including an operation and a file identifier is received. It is determined if the operation is of a predetermined type of operations. If the operation is of a predetermined type of operation, a target local replica file is identified. It is determined whether the target local replica file is a primary replica. If the target local replica file is the primary replica, the operation included in the request is executed. Otherwise, one or more of the set of storage devices on which remote replica files associated with the file identifier are stored are identified. In turn, the remote replica file that is the primary replica is identified. The request is transmitted to storage device on which the identified remote replica file that is the primary replica is stored.