For customers who can afford a relatively short term of database instance unavailability, scheduling downtimes at the time of week with the possible lowest impact could be an acceptable compromise.
对于能够接受一个相对短时间的数据库实例不可用的客户，按计划的关闭时间而只有最小可能的影响的方案也许能够被接受。
Abstract: In this paper, Formula of MTTR( meam time to repair) and unavailability of every states for series repairable system are given using Markov processes.
文摘：利用马尔可夫过程给出了串联可修系统各状态的不可用度表达式及平均修复时间表达式。
Many cases had to be proponed due to the unavailability of the court rooms, both the clients and lawyers suffered due to time lost, some cases are delayed and without longer period of detailed trial.
由于面临空间的不容许，许多案件不得不展期或缩短审讯的时间，无论是客户和律师也因此遭受到时间的损失，在某些情况下，案件也被拖延或未获得详细审讯。
Many cases had to be proponed due to the unavailability of the court rooms, both the clients and lawyers suffered due to time lost, some cases are delayed and without longer period of detailed trial.
由于面临空间的不容许，许多案件不得不展期或缩短审讯的时间，无论是客户和律师也因此遭受到时间的损失，在某些情况下，案件也被拖延或未获得详细审讯。
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