如果主服务器不可用，但客户机尚具有网络连接，就需要故障转换到备用服务器，而不是使用系统时间。
If the primary server is unavailable, but the client still has network connectivity, you want to fail over to a secondary server as opposed to using system time.
要确保主服务器发生故障和辅助服务器实施接管之间的延迟时间最小。
Just make sure the lag time between the master host failing and the slave host taking over is minimal.
如果主服务器失败，备用服务器就非常快速地接管工作负载(在大多数情况下，转换时间少于30秒)。
If the primary server fails, the standby can take over the workload very quickly (most cases in under 30 seconds).
网络中的每个NIS服务器和客户端都将配置为使用相同的 /etc/ntp.conf文件来与 NIS主服务器通信，以获取时间信息
Each NIS server and client in the network is then configured using the same /etc/ntp.conf file to communicate with the NIS master for their time information
这是一个客户机应用程序，它通过建立与日期-时间服务器的连接，从一个指定的主系统中得到日期和时间，并报告结果。
This a client application, and it is through the establishment of a date-time server connectivity, from a designated the main system, which is the date and time, and report the results.
这是一个客户机应用程序，它通过建立与日期-时间服务器的连接，从一个指定的主系统中得到日期和时间，并报告结果。
This a client application, and it is through the establishment of a date-time server connectivity, from a designated the main system, which is the date and time, and report the results.
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