Key Technology Research On CDP Disaster Recovery System Of Database-Oriented

As the era of big data is coming, disaster recovery technology has become the focus of the IT information technology research. With the explosive growth of Internet information and the serious consequences of business data loss, enterprises attach importance to the information data. The disaster recovery technology appears timely to ensure data security. Disaster recovery technology develops from the simple data backup to the complex construction of disaster recovery center. The enterprises are in urgent need of disaster recovery technology to protect data security,which promote the development of disaster recovery technology and related technology in a certain extent. Now, there are many domestic and foreign disaster recovery products, and disaster recovery technology has good prospects and research value research.Continuous data protection(CDP) technology, as the current popular technology of disaster recovery system design, has great advantage. Using CDP technology to achieve real-time backup data can not only realize the second level data acquisition effect in the backup window mode, but also ensure the data recovery time to reach the second level after the disaster. So the disaster recovery systems using CDP technology are popular. Based on the study of the related literature at home and abroad, our paper analyses the advantages and disadvantages of the current disaster tolerance technology, and puts forward some strategies to optimize the performance of a MS-POS synchronous CDP disaster recovery system under the environment of the mirror. The main work is summarized as follows:Firstly, this paper introduces the development status of disaster recovery technology and the CDP technology, and discusses the related technologies involved in the process of the implementation of disaster recovery system.Secondly, this paper puts forward a mirror synchronization performance optimization strategy MS-POS under the CDP disaster recovery system. The strategy focus on the resource competition problems involved in the process of CDP disaster protection. It combines with the first scheme first service and the upper application priority, and optimizes the process of I/O, effectively avoiding resource deadlock I/O competition leads, and reduces the performance of I/O system. At the same time, thispaper designs and implements a database oriented CDP disaster recovery system to verify the reliability and feasibility of MS-POS optimization strategy. With the combination of database caching mechanism and communication mechanism of the CDP disaster recovery system, the database proxy mode to ensure the continuity of the disaster recovery data integrity and database services, and ensure the effective verification process of MS-POS optimization strategy.Then, this paper conducts a large number of the experiment to verify the analysis for symmetric optimization strategy MS-POS. We firstly test the effects of the client disk I/O read and write performance. Then we test the disaster recovery time test on different disk storage capacity. Finally we test the feasibility and integrity of the data to the database agent.Finally, the paper summarizes the main work and contribution of the MS-POS optimization strategy, and puts forward the optimization strategy of MS-POS in the future work.