N+1 redundancy意思

"n+1 redundancy" is a term used in various contexts, including computer science, engineering, and system design, to describe a system's ability to continue functioning even if one of its components fails. The number "n" refers to the minimum number of components required for the system to function normally, and "+1" refers to an additional component that is not strictly necessary for normal operation but is included to ensure that the system can continue to operate even if one of the other components fails.

For example, in a computer system with "n+1" redundancy, there are "n" primary components and one additional component. If one of the primary components fails, the additional component can take over its function, and the system can continue to operate without interruption. This can help to ensure the system's availability and reliability.

"n+1 redundancy" is often used in systems that are critical or where downtime is unacceptable, such as in data centers, telecommunications networks, and other infrastructure systems.