What type of cluster does not lose capacity when a server goes offline due to a failure?

In an active-active cluster, all nodes in the cluster are actively processing requests simultaneously. This configuration allows for load balancing and ensures that resources are being utilized to their fullest potential. If a server goes offline due to failure in this type of cluster, the remaining servers can continue to handle the workload without losing capacity. This redundancy improves overall availability and ensures that the system remains operational despite individual component failures.

In contrast, an active-passive cluster typically has one or more servers that are on standby and only take over when an active server fails. Thus, during normal operation, only the active server(s) contribute to processing, which can lead to a loss of capacity if one server goes offline.

A distributed cluster involves nodes that are geographically dispersed, which could also lead to a loss of capacity when one node fails, depending on how the workload is distributed.

A standby switch cluster typically refers to failover scenarios that focus on network devices rather than server capacity, so it does not pertain directly to the question of server capacity in the event of failure.

Overall, the resilience of the active-active cluster is what makes it unique, allowing it to maintain capacity and ensure service continuity when individual server nodes encounter issues.