SYSTEM FOR MINIMIZING RECURRENCE OF DUAL RESTART OPERATIONS IN DUPLICATION SYSTEM

摘要

A redundancy system is disclosed that includes a first device and a second device, each including a watchdog logic, a reset logic, a watchdog transmitter, a watchdog receiver, a reset transmitter, and a reset receiver. According to the redundancy system, when a watchdog reset event occurs in the watchdog logic of the first device when the first device is in an active mode and the second device is in a standby mode, the watchdog of the first device is generated. A transfer unit delivers the watchdog reset event to a watchdog receiver of the second device, a watchdog receiver of the second device delivers the watchdog reset event to the reset logic of the second device, and the second device The reset logic of resets the second device, the reset transfer unit of the second device transmits information indicating that the second device has been normally reset to the reset receiver of the first device, and the reset receiver of the first device The information is passed to the reset logic of the first device, and the reset logic of the first device resets the first device. The redundancy system can minimize recurrence of dual restarts due to watchdog reset.;Redundant system, watchdog, dual restart