Reserach And Implementation Of Replica Management Strategy In Cloud Storage Environment

With the rapid proliferation of mobile smart terminals, the proliferation of Internet users, the global electronic data production and production speed has undergone tremendous changes. Intelligent end-users can produce personal data wherever they are. Data format is no longer limited to text, more performance for the voice, pictures, and short video. The rapid growth of user data on the storage and management of data put forward higher requirements. It is beneath high attention of cloud storage for its storage capacity, cost-effective, data management, and other advantages of convenient access. Replica technology as a cloud storage core support technology can effectively enhance the data availability, fault tolerance and security.This paper mainly studies the strategy of replica management in cloud storage environment. In order to simplify the replica management process and improve the performance of cloud storage, this paper analyzes the impact of replica organization structure on storage performance in cloud storage environment, and proposes a replica creation strategy based on proximity feature and a replica consistency maintenance strategy based on user QoS. The main work of this paper is as follows:First, a replica creation strategy based on proximity feature is proposed.According to the proximity of the replica node, select the appropriate node as the replica data storage node. A replica creation based on proximity feature can reduce the amount of data transferred during the replica data replication and reduce the load of the data communication network.Experiments show that this strategy can effectively improve the update speed of replica nodes and reduce the impact of link abnormalities on replica management,which makes the replica management process more reasonable, effective and accurate.Secondly, by analyzing the QoS requirement of user data storage,combining the QoS requirement and replica consistency policy, this paper proposes a QoS-based replica maintenance strategy based on user's QoS,and conducts related testing experiments. Experiments show that the consistent replica consistency policy based on user QoS can effectively guarantee the user data storage data reliability and response time requirements.Finally, a replica management system is designed and implemented.Describes the structure and function design of the replica management system. The system test shows that the proposed replica management strategy can meet the demand of replica management of general cloud storage system.