What is “failback,” and how does it work in MSCS?
“Failback” is the ability to automatically rebalance the workload in a cluster when a failed server comes back online. This is a standard feature of MSCS. For example, say “Server A” has crashed and its workload failed-over to “Server B.” When Server A reboots, it automatically finds Server B and rejoins the cluster. It then checks to see if any of the cluster groups running on Server B would “prefer” to be running on Server A. If so, it automatically moves those groups from Server B to Server A as soon as the time is right. Failback propertiesthat is, which groups can failback, which is their preferred server, and during what hours the time is “right” for failbackare all set from the cluster administration console.
