Full active redundancy

Full active redundancy is when any one of the two or three (or more) parallel units can satisfy the required function. 

Omit redundant paper-based activities, for example, identify certain steps and activities which are maintained for historical reasons that are no longer valid. Paperless projects conducted as full-scale Business Process Reengineering (BPR) projects typically identify many... 

An isolated redundant system, illustrated in Fig. 10.153, divides the load among several UPS units. If one of the active systems fails, a static bypass switch will connect the affected load to a standby UPS system dedicated to that purpose. The isolated redundant system does not permit the unused capacity of one UPS unit to be utilized on a DP system that is loading another UPS to full capacity. The benefit of the isolated configuration is its immunity to systemwide failures. 

After the occurrence of a failure, a totally separate computer is employed to carry out fault localization, which allows effective repair and restoration of full redundancy. The performance-monitoring software executes on the system s fault-tolerant computer and makes use of sensor voting and system mathematical models to detect failures. Real-time diagnostic tests are activated to identify suitable data paths and collect data required to carry out fault localization. 

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