Fault tolerance and disaster recovery


Fault tolerance and disaster recovery are topics frequently omitted or under-described in control system specifications.

“In a perfect world, our control systems would install and operate indefinitely with no faults. Experience teaches us otherwise.

“Control system specifications should deal with fault tolerance and failure recovery issues.

“A Hazard and Operability (HazOp) study is a good vehicle for determining the level of risk acceptable for a particular production process. If a formal HazOp is not practical, then it is up to the specification writer to do his own analysis.”

See Fault tolerance and disaster recovery.

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