Redundancy is a concept in maintenance operations and management that refers to the duplication of critical components or systems to ensure that operations can continue in the event of a failure. It is a form of risk management that is used to protect against the loss of data or functionality due to a single point of failure. Redundancy can be achieved through the use of multiple components, such as multiple power supplies, multiple servers, or multiple communication links. Redundancy can also be achieved through the use of redundant systems, such as redundant networks or redundant storage systems. Redundancy is an important part of any maintenance operations and management strategy, as it helps to ensure that operations can continue in the event of a failure.