Because you can schedule planned system outages to occur at a time that least impacts productivity, planned downtime is frequently treated differently than unplanned downtime.

• 由于可以将计划的系统中断安排在对生产率影响最低的时间内发生,因此,处理计划的停机时间的方式经常不同于处理计划外的停机时间的方式。