Abstract:

Currently, cloud storage becomes one of the fundamental technologies for information sharing and data service in the Internet. Data replication is widely used in cloud storage systems to improve the data availability, enhance the faulttolerant capability and ameliorate improve the system performance. A clusterbased data replication strategy in cloud storage systems is proposed, which includes when to replicate data, the number of its replicas and where these replicas should be placed. In the replica placement stage, a Cluster Based Replication Placement (CBRP) method with load balance in cloud storage systems is proposed. Experiments demonstrate that the proposed method is practical and with good performance.

Key words: cloud storage system;data replication;cluster;replica placement