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.
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。
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.
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.
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.
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.
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.
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.
系统宕机、高开发成本、不可控的生产环境以及满脸怒色的客户。
down systems, high development costs, unmanageable production environments and unhappy customers.
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.
即使宕机的时间长达数小时，但是很少有数据完全丢失的情况出现。
Even when they last for hours, there are few cases where complete data loss has occurred e.g.
可用性：计划中或非计划中的宕机很可能以不同方式影响端点系统。
Availability: scheduled or unscheduled outages are likely to affect endpoint systems in different ways.
Heartbeat的配置是当主节点偶然宕机时切换到备份节点。
Heartbeat is configured to switch over to the backup node if the master node happens to go down.
但问题是，如果服务器宕机了，那么客户端将继续使用请求塞满网络。
The problem is that if the server goes down, clients will continue to inundate the network with requests.
如果新改变发生在服务器宕机的时候，热部署将会在启动过程中进行。
Hot deployment occurs during startup if new changes occurred when the server was down.
在脱离黑莓手机阵营的用户激增前，最近RIM公司的服务曾多次宕机。
Users’ sudden increased fleeing of BlackBerry phones follows the recent outages of Research in Motion’s service.
首先，该网站宕机数个小时，这对于拥有巨大流量的网站来说还情有可原。
For starters, the site was down for hours, which is forgivable given the massive amount of traffic the site received.
应用程序能够利用集群的工作负载平衡特性来减少由队列管理器宕机引起的中断风险。
Applications can take advantage of the workload balancing features of clustering to reduce the risk of outages caused by queue manager downtime.
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