Data Consistency Check And Data Quick Recovery Methods In Disaster Recovery System

In order to insure data integrality, data availability, data security and business continuity, it is very important to establish Disaster Recovery System. In Disaster Recovery System, it is very important to check the consistency between the source data and the backup data in order to make sure the availability of the backup data. Data consistency check can clear the feint of recoverability of backup data. Also data consistency check is an important supplement to the backup system. When disaster happen, it is very important to business whether the Disaster Recovery System can recover data from the backup data center and rebuild the manufacture center quickly, whether it can decrease the time when the Disaster Recovery System run in DOI (degraded operation interval), whether it can decrease the time when the application system is halted.Now some disaster recovery company like IBM, VERTIAS use the hardware or software based data replication technology to implement data recovery. But their implements have the disadvantage of bad interoperability, needing to establish special line between master and backup data center. Also it is very expensive to establish and maintain the system.After studying the technology relative to the Disaster Recovery System, this paper presents a method of data consistency check and a method of data remote quick recovery, both of the methods are all-purpose; this paper also implements both of the methods in the DRC system which is an Internet based, cross-platform, cross-zone, inexpensive and effective Disaster Recovry System. The result of the...