兼顾网络带宽的节能云数据副本布局算法

由于云数据中心作为云应用服务的重要基础设施,在满足日益增长的用户需求的同时,也导致了云数据中心能耗的急剧上涨。为了降低能耗和提高云应用服务质量,文中通过全面考虑云数据中心的服务器和网络设备的能耗,兼顾网络带宽建立了云数据中心的能耗计算模型,提出了一种全新的以能耗优化为目标的云数据副本的布局算法,并通过GreenCloud验证了所提出的节能模型和算法的有效性。实验结果表明：文中提出的布局算法能有效地降低云数据中心的能耗和对网络带宽的消耗,从而提升了用户对云应用服务质量的满意度。

Energy Efficient Cloud Data Replica Layout Algorithm Considering Network Bandwidth

Because the cloud datacenter is a critical infrastructure for cloud application, the increasing cloud application can meet the requirements of users, and at the same time greatly increase the energy consumption of datacenters. In order to reduce energy consumption and improve the quality of cloud services, this paper considers the energy consumption of server and network equipment in cloud datacenter, and builds the computing model of energy consumption considering network bandwidth for cloud datacenter. This paper presents a new data replica layout algorithm which can optimize energy consumption. The evaluation results of computing model and algorithm are obtained through GreenCloud simulator. Experimental results show that, the layout algorithm proposed by this paper can reduce effectively energy consumption and network bandwidth for cloud datacenter, and then improve the satisfaction of users for cloud application.