DATA REPLICATION METHOD AND DATA STORAGE SYSTEM FOR PROCESSING STATE MACHINE BASED REPLICATION GUARANTEEING CONSISTENCY OF DATA AND DISTRIBUTED RECOVERY USING CHECK POINT DATA AND REPLICATION LOG

摘要

Disclosed are a data replication method and data storage system for processing state machine based replication guaranteeing consistency of data and distributed recovery using check point data and a replication log. In the data replication method, the transition of the state of a memory storage, which means the state set of stored data, is deterministically generated by the performance of calculation provided for the memory storage. By using a feature that the result of the calculation is the same, it is possible to perform replication that guarantees consistency between two memory storage by performing the calculation performed in the two memory storages with a first-in first-out order method.