This is a problem not only when the database fails, but when you want to perform maintenance on the server.

不仅是在主库宕机的时候，当你需要对服务器进行维护的时候，这都成为了问题。

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If you regularly access a remote server to perform maintenance or develop software, GNU Screen is indispensable.

如果您常常要访问远程服务器以执行维护或开发软件，那么GNU Screen是必不可少的工具。

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A relatively specialized field, roustabouts perform maintenance on oil RIGS and pipelines, using hand and power tools.

这是一个特殊的领域，他们一般用手工和电动工具维护码头平台和管道。

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The Robonaut is designed to perform maintenance tasks aboard the space station to free up the Astronauts for more important research tasks.

FORBES: First Human-Robot Handshake In Space

Tech support personnel might have to go desk to desk to do fixes, or perform maintenance on e-mail servers that have become clogged with virus-generated messages.

CNN: 'Navidad' computer virus poses moderate risk

Besides providing support in dangerous situations like tunnel fires, SINTEF envisions future versions of Anna being used to locate and provide oxygen to earthquake victims or perform maintenance on underwater oil rigs.

ENGADGET: Anna Konda: the firefighting snakebot