A Kind Of Data Flow Disaster Recovery Method Based On IP-SAN

With the rapid development of information technology and network storage technology,IP-SAN has become an important network storage solution. Centralized data storage has putforward higher requirements for data disaster recovery. The recovery point objectives oftraditional data backup technology can not been unable to meet the requirements of dataprotection. Continuous data protection technology that can protect data in a real-time modehas been widely used.Based on the study of data disaster recovery and network storage technology,we designa system that support continuous data protection technology for remote data disaster recoveryin IP-SAN storage environment, Through the research to iSCSI technology and IP-SANnetwork data flow, We present a stream-based block-level data protection method for disasterrecovery system. In order to achieve continuous data protection, The method capture blockdata that are written to storage server in a real-time from the IP-SAN mode, therefore itachieves continuous data protection.The disaster recovery system protect the data throughbypassing the network data packets and it proves to have no effect on the local storage in I/Operformance.Finally, we verify the disaster tolerance systems by experiment.Experimental resultsshow that data disaster tolerance system in this research has no effect on I/O performance,and the system has stable data recovery speed.