在图1中可以看到，hypervisor是提供底层机器虚拟化的软件层(在某些情况下需要处理器支持)。
As you see in Figure 1, the hypervisor is the layer of software that provides the virtualization of the underlying machine (in some cases, with processor support).
将这些机器迁移到单独的虚拟化环境中会降低内存的使用，也会降低单个服务器所消耗的热量和能量。
Moving these machines into a single virtual environment reduces the physical footprint, heat produced and power consumed by the individual servers.
虚拟化解决方案的底部是要进行虚拟化的机器。
At the bottom of a virtualization solution is the machine to be virtualized.
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