The cloud computing is a new computing model which comes from grid computing, distributed computing, parallel computing, virtualization technology, utility computing and other computer technologies and it has more advantage characters such as large s

存储虚拟化是指将用户看到的存储资源同具体的物理存储设备分隔开来，为存储用户提供统一的虚拟存储池。它是具体存储设备或存储系统的抽象，展示给用户一个逻辑视图，同时将应用程序和用户所需要的数据存储操作和具体的存储控制分离。-Storage virtualization refers to the storage resources to specific users see the same physical storage device separated, providing a unified