When DRS (dynamic resource scheduler) is enabled for a cluster, the system will monitor the CPU, memory, and storage usage of the Running
virtual machines in the cluster. Based on the resource usage of these virtual machines, the system evaluates the resource balance status of the cluster. When an imbalance in the resource load is detected, DRS generates virtual machine migration recommendations and automatically migrates virtual machines with high resource usage to appropriate hosts based on these suggestions, thereby achieving load balancing for the cluster.