Hardware Fault ToleranceMost Realtime systems must function with very high availability even under hardware fault conditions. This article covers several techniques that are used to minimize the impact of hardware faults. Realtime systems are equipped with redundant hardware modules. Whenever a fault is encountered, the redundant modules takeover the functions of failed hardware module. Hardware redundancy may be provided in one of the following ways: (1) One for One Redundancy (2) N + X Redundancy and (3) Load Sharing.
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