关键词: Ceph集群, 能耗模型, 数据放置策略, 能耗管理

Abstract: High energy consumption of the data center is a key problem to be solved in development of cloud computing. A cluster energy consumption optimization model and a Ceph cluster data-place policy based on the model are proposed. The combination of sequence and random storage methods is adopted while considering the cluster availability and fault tolerance, to reduce the data center energy consumption under the condition of satisfying the requirement of user’s Service-Level Agreement（SLA） and ensuring the clustering performance. The experimental results show that compared with the original Ceph cluster, the proposed data placement method makes the data center energy consumption reduced by 14.3%.

Key words: Ceph cluster, energy consumption model, data-place policy, energy consumption management