What is the benefit of clustering in an IT infrastructure?

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Clustering in an IT infrastructure primarily enhances system redundancy and availability, making it a crucial aspect of designing resilient systems. When multiple servers are combined into a cluster, they share the workload and provide failover capabilities. If one server fails, another in the cluster can take over seamlessly, minimizing downtime and maintaining service availability. This redundancy ensures that critical applications and services remain operational, which is particularly essential for businesses that rely on high availability to meet customer demands and maintain productivity.

By contrast, while performance improvements through parallel processing can occur in certain clustering implementations, redundancy and availability are more significantly emphasized in the context of clustering. Maintenance costs may fluctuate depending on the complexity and scale of the cluster, and network architecture design may not necessarily be simplified but rather altered to accommodate clustering. Overall, the predominant benefit of clustering lies in its ability to enhance system resilience and ensure operational continuity.