中文摘要：

随着云计算的兴起,虚拟机正逐步成为应用服务的部署环境,如何高效、经济地管理虚拟机镜像文件至关重.提出了一种Qo S约束的虚拟机镜像放置优化方法,通过存储收益模型量化分析用户服务质量约束下的存储服务综合收益,优化镜像文件的存储策略.实验结果表明该方法可以在满足用户服务质量的前提下,显著优化存储收益.

英文摘要：

With the rise of cloud computing, virtualization technology application is becoming more and more prevalent. How to manage them efficiently and economically has become an important problem. This paper proposed an approach which optimizes the placement of virtual machine images based on QoS. It analyzed the revenue of the storage service constrained by QoS and optimized the strategy of images placement. Experiments show that this approach can meet the constraints of user＇s QoS and improve the revenue of storage effectively.