数据源不可用，如服务器停机时。
Unavailability of the data source, for example when a server is down.
当一个服务器停机时，另一个服务器接管。
甚至感觉不到停机时间？
我可以期待什么样的停机时间？
我们上个月的故障停机时间有多长？
这减少了系统和数据库停机时间。
这肯定会增加系统停机时间。
这大大减少了系统和数据库停机时间。
通过回滚到稳定状态最小化停机时间。
这也会增加系统停机时间。
系统和数据库停机时间长。
这样可在此种条件下明显减少停机时间。
This can significantly reduce the amount of downtime you experience in such circumstances.
停机时间包括计划内和计划外停机时间。
这将增加系统停机时间。
它能在高可用性集群的服务器停机时维护用户连接。
It can service the user connections while the servers of the high availability cluster are brought down.
减少客户机停机时间。
当系统没有不需要的停机时间时它具有高可用性。
A system is highly available when it achieves no unwanted downtime.
测试将显示停机时间从6个小时减少到15分钟。
Tests will show that downtime is reduced from 6 hours to 15 minutes.
如果停机时间接近0，那么高可用性接近100%。
As downtime approaches 0, high availability approaches 100%.
持续可用性要求数据库引擎随时可用，没有可觉察的停机时间。
Continuous availability demands that the database engine be available for processing with no perceivable downtime.
这实际上造成了停机时间，直到这些任务被完成为止。
This essentially creates downtime until these tasks can be completed.
一种衡量在线服务是否受到欢迎的方法是公众对其停机时的反应。
One way to measure the popularity of an online service is the public's reaction to its downtime.
集中管理的软件和瘦客户机硬件更稳定，停机时间更短。
Centrally managed software and thin client hardware are more stable and lead to less downtime.
在这些场景中，停机时间以不存在、一秒或数秒来度量。
The downtime in these scenarios is measured as non-existent, fractions of a second, or, at the high end, a few seconds.
所以转换过程中系统和数据库的总停机时间可能是6个小时。
So total system and database downtime during cutover could be as long as 6 hours.
可用性是用应用程序在一年内非停机时间的百分比来衡量的。
Availability is measured as the percentage uptime of the application spread across the whole year.
关于安全补丁的一个重要方面，就是需要根据操作系统来安排停机时间。
An important aspect of security patches is that depending upon the operating system, downtime may need to be scheduled.
如果用户要求停机时间尽可能短，需要按特定的过程执行迁移。
If users require minimum downtime, there are specific procedures that need to be followed to perform the migration.
再次强调，这里假设您的客户满意度主要是基于系统停机时间。
Again, if your customer satisfaction is mainly based on system downtime.
再次强调，这里假设您的客户满意度主要是基于系统停机时间。
Again, if your customer satisfaction is mainly based on system downtime.
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