An NFS-mounted directory became unavailable when a remote host was turned off.

当一个远程主机关闭时，一个nfs加载的目录将变得不可用。

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So after that, the FS agent works correctly even if all security servers become unavailable regardless of whether the Cached on Host option is enabled or not.

在此之后，即使所有安全服务器不可用，或者没有启用Cached on Host选项，FS代理都能够正常工作。

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When your hardware is unavailable, you can simulate at the host and test for generic bugs.

当你的硬件不可用时，你可以在主机上进行模拟并对一般性的bug进行测试。

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There are a host of players unavailable because of injury, including fly-half Jonny Wilkinson, wing James Simpson-Daniel, flanker Lewis Moody, wing David Strettle and full-back Nick Abendanon.

BBC: England call up uncapped quartet