虚拟存储空间是通过硬件和软件的综合来扩大用户可存储空间，它在内存储器和外存储器（磁盘、光盘）之间增加一定的硬件和软件支持，使两者形成一个有机整体，支持运行比实际配置的内存容量大的多的大任务程序。
百分比根据在这个示例实施例中实现的虚拟存储空间使用情况来估计。
The percentages are estimates based on the virtual memory space utilization implemented in this example embodiment.
网络存储技术遇到的一个问题是如何把网络中闲置存储资源组织起来形成一个巨大的虚拟存储空间。
However, they have a problem that is how to make use of network idle storage resources and organize them into a huge virtual storage space.
为了在一台虚拟单机上充分支持如此多的负载，海量的存储空间往往是必要的。
In order to adequately support so many workloads on a single virtual host, significant storage space is often necessary.
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