What term is used when multiple hardware components work together to mirror each other's availability?

The term that describes multiple hardware components working together to mirror each other's availability is clustering. Clustering involves connecting multiple servers or systems in such a way that they can operate as a single unit, providing increased availability and reliability. When one component in a cluster fails, another component can take over, ensuring that services remain accessible without significant downtime. This setup is especially beneficial in critical applications where continuous uptime is essential.

Clustering not only helps in maintaining availability but can also improve performance and resource utilization by distributing workloads. It is a key strategy in designing resilient systems that can withstand hardware failures while continuing to operate efficiently.