还有骇客，宕机和其他错误老是发生。
这样就实现高可用性，避免了任何宕机。
Hence achieving a high availability and avoiding any downtimes.
使宕机带来麻烦的是开发团队缺乏沟通。
What irked many about the downtime was the lack of communication from the development team.
同步迁移和应用程序宕机。
您通常会关注响应时间、吞吐率和宕机时间。
You're typically interested in response times, throughput rates, and downtime.
也许宕机与某个位置的连接性有关。
Perhaps the outage was related to connectivity from one location.
电子商务站点在黑色星期五宕机。
对于最坏的情况，这将导致集群宕机。
这意味着一定会出现计划外的服务器宕机。
This means that unplanned and unannounced server outages will happen.
一个或多个RAM服务器宕机或者无响应。
断电宕机对于移动设备用户来说特别糟糕。
Outages are particularly painful for users of mobile devices.
这些功能使其能够更容易地响应各种宕机情况。
These capabilities make it easier to respond to a variety of outages.
当这么一个网站宕机的时候人们感觉非常难过。
People feel a very real pang when a site like this goes down.
不幸的是，他们无法了此心愿，因为LJ也宕机了！
Unfortunately, they'll be foiled there as well since LJ is down, too.
许多S3的客户不能接受在宕机期间关闭整个业务。
Many S3 customers found that unacceptable, considering entire businesses were shut down during the duration of the outage.
例如，Basecamp曾经在半夜宕机了数小时。
For example, Basecamp was down once for a few hours in the middle of the night.
同时，可以对主节点进行维护，分析它为什么会宕机。
Meanwhile, maintenance can be performed on the master node to analyze why it went down.
对于目标系统宕机，您通常需要暂停后续的请求转发。
In the case of a target system outage, you often need to suspend the forwarding of further requests.
然而，当一个目标系统出现宕机，事情就有些复杂了。
However, things get a little more interesting when there is a target system outage.
如果那台服务器宕机，另一台服务器将获取并运行该活动。
If that server went down, another LEI server would pick up that activity and run it.
可惜，如果所引用的网站宕机了，那么您的应用也会宕机。
Unfortunately, if the referenced website goes down, so does your application.
这个镜像仅在左侧的所有4 台机器都宕机之后才使用。
The latter is used only if all four machines on the left side are down.
它的公开服务，例如Gmail，也遭遇过断电宕机事件。
Its public services, such as Gmail [19], have also suffered outages.
我们对此宕机故障对各位用户和开发者社区造成的不便感到抱歉。
We regret any inconvenience this disruption caused the impacted customers and our developer community.
列维认为，云计算出现宕机通常非常少见，但更容易被外界察觉。
Levie argues that cloud outages are generally rare but much more visible to the outside world.
高可用性——有了复制与容错的托管配置，宕机时间可以最小化。
High Availability - Downtime can be minimized with replication and fault tolerant hosted configurations.
灾难性的事件总是会发生，但是在非云区域，宕机只会影响单台电脑或站点。
Catastrophic issues will always occur, but in the pre-cloud era, downtime only affected a single computer or website.
Facebook的最长连续宕机时间紧紧持续了不到半个小时。
Facebook's longest continuous outage only lasted for less than half an hour.
第四，可以向客户通知sla宕机事件，或在对网络接口作出修改之前通知。
Fourth, he can notify the client of SLA downtime or before changes to network interfaces take place.
然而，不应该低估在发生数据中心宕机时改进后的解决方案的弹性。
However, the improved resilience of the solution in case of a data center outage should not be underestimated.
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