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CprE 545: FAULT-TOLERANT SYSTEMS

2. NMR with spares. The idea here is to provide a basic core of N modes arranged in a form of voting configuration and spares are provided to replace failed units in the NMR core.The benefit of NMR with spares is that a voting configuration can be restored after a fault has occurred.For example,

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CprE 545: FAULT-TOLERANT SYSTEMS

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    1. CprE 545: FAULT-TOLERANT SYSTEMS Lecture 5: Fault-tolerant design techniques – Part II

    2. 2 NMR with spares The idea here is to provide a basic core of N modes arranged in a form of voting configuration and spares are provided to replace failed units in the NMR core. The benefit of NMR with spares is that a voting configuration can be restored after a fault has occurred. For example, a TMR with one spare will mask two faults.

    3. 3 NMR with Spares (Cont’d) The voted output is used to identify faulty modules, which are then replaced with spares.

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