Application And Research On Disaster Recovery Backup Technology In The State Administration Of Taxation

The steady rise of the informatization in the state administration of taxation and the rapid development of the electronic taxation provide more strict demands for the integrality of the data and the continuity of the systems. The great growth of the data volume and the netlization of the informational storage pattern make the importance of the taxation data more and more apparent. Only with the present simple distributivity storage pattern and the traditional disk backup technology, we can not fulfill the demand of the data security and the service continuity. Under the force of the security management demand in the taxation informatization, the accomplishment of the taxation disaster recovery backup system has a nonnegligible and significant meaning for the normal operation of the information systems and the continuous unfolding of the daily collection and management work.By analyzing the hidden secure trouble of the business and data in the state administration of taxation and aiming at the problems in the present system, for example, the informational isolated island, storage bottle-neck, low anti-disaster grade and so on, this paper designs and implements a taxation disaster recovery backup system. The system includes three sub-systems: the local data storage sub-system, the remote data backup sub-system and the heterogeneous data conformity sub-system. Therein, by adopting the ISCSI protocol, the local data storage sub-system constructs the circuital access pattern of the taxation data. The system eliminates the unbalance phenomena between the capability and the demand of the data storage under the traditional bus storage pattern. Under the centralized control pattern, it provides the information access and shares service with the great data volume, the high speed of data transportation and the high availability for the taxation system. By remotely building a backup data center that is totally consistent with the local data center on the IT foundational fabric, the remote data backup sub-system uses the geographical dispersibility of the remote data center and adopts the LVR software replication technology. It implements the synchronous data replication between the local andremote data center, changes the zero standing capability on the great disaster event under the single data center pattern and raises the standing capability on the disaster events for the application and data in the taxation system. By adopting the dynamic replication technology between the heterogeneous data source, the heterogeneous data conformity sub-system successfully shields the various heterogeneous ingredients of the present system. The taxation integrated resource warehouse, which is directly built in the remote data center, provides the data soil loading the analytical operation for the online operative transaction, data warehouse, data mining and other data incremental services. The three sub-systems link by link, depend on each other and act on each other. Based on the layered D/R settle project, they provide data recovery and business recovery on different tiers for the taxation system, ensure the safe storage of the system data and the continuous run of the business, thoroughly change the sick status of the foundation of the disaster recovery system in the state administration of taxation.By constructing the experimental environment of the system in the central apparatus room of the Yi Yang State Administration of Taxation, this paper respectively tests the three sub-systems of the taxation disaster recovery backup system. The result indicates that the system's design totally achieves the prospective aim. The accomplishment of the system ameliorates the storage model of the informational data and the recovery grade of the disaster backup in the state administration of taxation. By reducing the running risk of the pivotal business, for example, collection and management, the system farthest protects the real time, the integrity and the consistency of the various business data.