一个问题是，如果软件升级的影响范围超出导出的文件系统，就需要特别小心，因为仍然需要修补客户机上的软件。
For one thing, software upgrades that affect more than the exported file systems will require special attention, because you'll still need to patch the software on the clients.
如果您的客户机应用程序需要连接到多个对等方，或者甚至它需要冒充不同的用户，这项高级的功能都特别有用。
This advanced functionality comes in particularly handy if your client application needs to connect to multiple peers, or even if it needs to masquerade as different users.
如果外部客户端需要控制某些应用程序处理，异步接收将特别有用。
Asynchronous receive can be particularly useful if the external client needs to control some application processing.
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