Abstract: Coming with the cloud storage，the virtualized technology has been widely applied in cloud storage system，at the same time，the new data center deployment and management appears.This paper describes WFS，an enterprise private cloud storage system.The virtualization technologies such as unified storage management，virtual path，separation of data and metadata，interface of cloud storage，multi-path access and so on，are employed in the private cloud storage system which is divided in four layers.With deeply analyzing the system，the features and deployed mode of the virtualization are explored，the virtualization plays a more and more important role in increasing resource utilization rate，enhancing system security and usability.

Key words: cloud storage, private cloud, virtualization

摘要： 在云存储的概念被提出之后，虚拟化技术在云存储系统中得到了广泛的应用，出现了全新的数据中心部署和管理方式。实现了一个企业级私有云存储系统WFS，在WFS云存储系统的四层架构中，分别采用了统一存储管理、虚拟路径、数据与元数据分离、云存储接口、多路径访问等虚拟化技术。通过对该系统进行分析，说明了虚拟化技术在云存储系统中的应用方式、特点以及在提高资源利用率、增强系统安全性、易用性等方面的重要作用。

关键词: 云存储, 私有云, 虚拟化