What action can an administrator expect DRS to take during a host failure in a vSphere cluster?

During a host failure in a vSphere cluster, Distributed Resource Scheduler (DRS) plays a crucial role in resource management and workload balancing. In this scenario, when DRS is enabled and a host goes down, the primary purpose of the system is to ensure that virtual machines (VMs) remain available and can continue running effectively.

The action indicated in the correct answer involves DRS moving the virtual machine to another host within the same cluster that has sufficient resources available. This is an essential function of DRS, as it facilitates seamless workload management and helps to maintain operational continuity.

When High Availability (HA) is set up in conjunction with DRS, if a host failure occurs, HA will attempt to restart the virtual machines that were running on the failed host. Once the VMs are restarted as part of the HA process, DRS then evaluates the current resource availability in the cluster and will optimize the placement of these VMs on different hosts based on their resource requirements. This combined functionality means that DRS acts promptly to balance workloads even after a recovery effort by HA, ensuring optimal resource usage across the cluster.

The other options suggest actions such as moving VMs to different clusters or to hosts proactively, which do not align with how DRS