Xen是一个开源的虚拟化管理软件,用于将硬件虚拟化,呈现给上层系统一个和真实处理器一样的"软"处理器,也即虚拟机.可以创建的拟机个数理论上是无限的,因此,使用Xen能够很好的利用底层硬件的计算能力-Xen is an open source virtualization management software, and hardware virtualization, presents a real processor to the upper level system of " soft"　processor that the virtual machine can create a number of virtual machines is theoretically unlimited Therefore, using Xen good use of the computing power of the underlying hardware