Description: N+1 redundancy is a system design principle that ensures there is at least one additional component beyond the minimum required to maintain service availability. This approach is fundamental in the architecture of critical systems, where service continuity is essential. ‘N’ represents the minimum number of components needed to operate, while ‘+1’ indicates the existence of an additional resource that acts as a backup. This means that if one of the components fails, the system can continue to function without interruptions, minimizing the risk of downtime. N+1 redundancy is commonly applied in various areas, such as data centers, power systems, and cloud services, where availability and reliability are paramount. This approach not only enhances system resilience but also allows for more efficient resource management, as maintenance or upgrades can be performed without affecting normal operations. In the context of IT infrastructure and operations, N+1 redundancy becomes a key strategy for balancing infrastructure investment with the need to ensure uninterrupted service, enabling organizations to optimize their spending while maintaining high levels of availability.
