What occurs when a Mid Server in a Failover Cluster fails?

When a MID Server in a Failover Cluster fails, the highest available MID Server takes over the work. This configuration is designed to ensure high availability and resilience within the ServiceNow discovery environment. The Failover Cluster is structured to provide fault tolerance by allowing other MID Servers to seamlessly assume the responsibilities of a failed server, thereby maintaining continuity in the data collection and discovery processes.

By having the highest available MID Server take over, the system optimizes its performance and utilizes the most capable resources available in the cluster. This dynamic response minimizes downtime and ensures the discovery process remains efficient and effective, allowing businesses to maintain accurate and up-to-date configuration items in their configuration management database (CMDB).

In a properly functioning Failover Cluster, the system is proactively designed to distribute the workload among capable servers, rather than halting operations or relying on minimal capability MID Servers. Therefore, the approach of leveraging the highest available MID Server is fundamental for maintaining service continuity in the event of server failure.