Fault tolerance - pattern and the switching protocol for a plurality of hot - and cold - standby - redundancies

摘要

A process for the fault tolerant controller - readiness. Performing functions by a first controller, the in a primarily status mode. The operation of a second controller into a hot status - - - standby mode and mirrors of the first controller, by the execution of functions, for the operation as a redundant controller. Operating in a cold - standby - status - mode of at least one backup - controller under normal operating conditions. The second controller is reconfigured, while it is under normal operating conditions from the hot - standby - status - mode for primary standby - status - mode, when a fault occurs in the first controller. Reconfiguration of the at least one backup - controller, which is under normal operating conditions from the cold - standby - status mode in the hot - standby - status mode in order to provide, as a redundant controller in response to the reconfiguration of the second controller from the hot - standby - status mode for primarily status mode to operate.