这一特殊用途(称为服务器虚拟化)正在演变为数据中心，因为单个物理机能够用于托管10个(一般情况)或更多虚拟机(VM)，如图1所示。
This particular use, called server virtualization, is transforming data centers, as a single physical machine can be used to host typically 10 or more virtual machines (VMs), as shown in Figure 1.
这一设备已经建立起了一个数据中心网络，在这一网络中虚拟机和磁盘可以在几秒钟内重启。
That outfit has built a network of data centres in which virtual machines and disks can be launched in seconds.
虽然硬件呆在一个地方静止不动，“虚拟机”消耗的处理能力却能跳来跳去，甚或在遥远的数据中心之间来去自如。
Although hardware stays in one place, "virtual machines" consuming processing power can jump around, even between far-flung data centres.
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