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N+1 redundant system

Term : N+1 redundant system

What is 'N+1 redundant system'? What does 'N+1 redundant system' mean?

Definition

An operating method used to improve system reliability by connecting N Power Supplies of the same model (one power supply if N=1) and then added one redundant Power Supply to operate with N+1 Power Supplies.

Power Supplies