Such outages can be planned or unplanned events, such as when restarting servers in the cell after an application update, or when a server power supply fails.

这样的中断可以是计划的也可以是未计划的事件，例如当一个应用程序被升级时重启单元中的服务器，或者是当一台服务器的电力供应失败时。

youdao

If the availability of the server systems cannot be guaranteed due to lack of permanent power supply anyway, there is not much benefit in configuring failover between server systems.

如果由于临时停电而无法保证服务器系统的可用性，则在服务器系统之间配置故障恢复没有太多益处。

youdao

If your server is going to be doing anything relatively important, make sure that it's been equipped with an uninterruptible power supply (UPS).

如果服务器计划担负任何比较重要的任务，请确保已为它配备了不间断电源(ups)。

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For the project, the social network is publishing specs and designs for its motherboards, power supply, server chassis and more.

FORBES: Morning Tech Wrap: Facebook, Apple, Nokia