一旦找到，就表示主服务器不可用，需要立即开始监测连接性。
Once you find this, you know that the primary server is unavailable and that you should begin to monitor for connectivity.
当主服务器不可用以后，请求会被传给这些服务器。
It will be passed requests when the primary servers are unavailable.
这些就绪后，当主服务器不可用时，就会通知网络框架。
With this in place, the network framework is notified when the primary server is unavailable.
如果RADIUS服务器不可用，则使用NAS的本地用户数据库密码。
If a RADIUS server is not available, use the NAS's local user database password.
但是，如果身份验证服务器不可用，则事件处理程序会使应用程序重新恢复为脱机状态。
However, if the authentication server is unavailable, the event handler returns the application to the offline state.
因而，Derby可以成为任何“脱机”策略的关键部分，从而在服务器不可用时访问数据。
Thus, Derby can be a key part of any kind of "offline" strategy, making data available even when the server is not.
当第一台服务器变得再次可用时，代理将继续工作，并处理当服务器不可用时可能会错过的所有文档。
When the first server becomes available again, the agent will catch up, and process all the documents that it might have missed while the server was unavailable.
这个过程也有其复杂性(比如当一个服务器不可用时会怎样)，更多信息，请参见相关文档(参见参考资料)。
There are complexities to this process (such as what happens when a server is unavailable), but the documentation offers more information (see Resources).
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.
如果VisualExplain不支持您所连接的这个类型的数据库，它会弹出消息告诉您数据服务器不可用。
If Visual Explain is not supported for the type of database that you are connected to, a message tells you that it is not available for your data server.
建议在公告的系统停机时间执行这一修改，除非正在运行副本服务器，可以应对在升级期间服务器不可用的问题。
It is advisable to execute this change during announced system downtime, unless you have the replica server running to take care of the unavailability of the server being upgraded.
在此之后，即使所有安全服务器不可用，或者没有启用Cached onHost选项，FS代理都能够正常工作。
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.
memcached服务器不可用不应该是应用程序的终结，虽然这意味着在memcached服务器恢复正常之前性能会有所降低。
Losing your memcached server should not be the end of your application, although it might imply a decrease in performance until the memcached server comes back up.
如果某个服务器或联合与源服务器间的任何连接失败，集成视图就不可用。
If one of the servers or any connection between the federation and the source server fails, the integrated view is not available.
如果搜索服务器由于软件或硬件的故障而产生故障，那么门户中的搜索特性将不可用。
If the search server fails due to software or hardware failure, the search feature is unavailable in the portal.
尽管服务器公开了影响行为的配置，但实际代码不可用，因而有时必须设法进行推论，而不是直观的检查。
Although the server exposes configurations that affect the behavior, the actual code is not available and so it is sometimes necessary to resort to deduction rather than straightforward inspection.
因此，在修复或替换主服务器之前，管理功能是不可用的。
Therefore, administrative functions are unavailable until the primary server is restored or replaced.
如果声音不可用或者收到错误消息，则请确保声音服务器已经启动并且混音器的设置都正确。
If the sound is unavailable or if you receive an error message, make sure your sound server has been started and that your mixer Settings are correct.
即使服务器临时不可用，也可以访问数据。
This allows data to be accessed even if a server is temporarily unavailable.
这就意味着在comet流样式通信持续期间，从客户端设备到后端服务器的每个系统上都至少有一个连接处于不可用状态。
This means that during the duration of a Comet streaming style communication, at least one connection is tied up on each system from the client device to the backend server.
下面的例子显示RS次要服务器上stores_demo中的customer表不可用，而且该事务已经被应用。
The example below shows that customer table in stores_demo at RS secondary server is not available and that transaction has been applied.
拓扑内哪些服务器被启动、停止或不可用。
Which servers within the topology are started, stopped, or unavailable?
如果在目标服务器端这种功能不可用，那么您应该考虑使用出站标识映射场景来代替。
If this capability is not available on the target server side, you should consider an outbound identity mapping scenario instead.
即当某个服务器过于繁忙或不可用时，您可以将故障转移到其他服务器。
That is, you can cause failover to another server when a server is too "busy" or is unavailable.
当您进行备份后，将其副本放到一个高度可用的文件系统中；否则，部署管理器服务器出现磁盘故障会使这些备份变得不可用。
When you have the backup, place a copy of it in a highly available file system; otherwise, a disk outage on your deployment manager server could make the backups unavailable to you.
延迟存在时间越长，服务器1、2和3 就可能会随着应用程序服务器中越来越多的工作线程被阻塞而变得不可用。
The longer the delay persists, servers 1, 2, and 3 may become unavailable as more and more of the worker threads within the application servers become blocked.
如果特定服务器在请求到达时不可用或过于繁忙，集群可以透明地将该请求传递给其他可用的服务器。
If any given server is unavailable or too busy at the time the request arrives, the cluster transparently passes the request to a server capable of handling the work.
当发送服务器上的映射未知或者不可用时。
When the mapping on the sending server is not known or available.
实际上，默认情况下会启动客户机，而不是在启动客户机之前启动服务器，如果需要使用客户机，但所有客户机均不可用，此时会自动启动服务器。
In fact, instead of starting a server before starting any clients, by default you start clients that automatically launch a server if they need one and none is available.
实际上，默认情况下会启动客户机，而不是在启动客户机之前启动服务器，如果需要使用客户机，但所有客户机均不可用，此时会自动启动服务器。
In fact, instead of starting a server before starting any clients, by default you start clients that automatically launch a server if they need one and none is available.
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