省电往往是来自于从数量上减少物理服务器，而不是从休眠或关闭电源的服务器。

Power savings most often come from the reduction in the number of physical servers, not from the sleeping or powering off of servers.

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如果添加更多的服务器，是否有足够的电源？

If you add more servers, is there enough electrical power?

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环境中有许多其他因素会影响性能，包括网络使用率、服务器上的其他程序、拒绝服务攻击以及电源线被绊断。

Many other factors in the environment can affect performance, including network utilization, other programs on the server, denial of service attacks, and tripping over the power cord.

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