警告当sVC _REQ#43起作用时,备份单元还继续执行控制,当错误发生和切换控制的单元时可以继续接管系统。这时如果切换发生,可能会发生输出突变的情况,因为两个单元可能产生不同的输出结果。设想当SVC_REQ#43起作用时停止备份单元的输出。
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