Meantime to failure is the average continuously operational period — i.e. the average period between the end of one failure and the beginning of the next.
平均失效到达时间是连续运行期间的平均值——也就是说，在结束一个失效和开始另外一个之间的平均周期。
2
The goal of any good systems administrator is to avoid being a victim of the meantimebetweenfailure value of hardware and find a way to mitigate the risk of a disk failure.
The proportional allocation factor and the allocation formulae expressed in terms of failure rates and meantimebetween failures respectively are given.