Which feature provides high availability by restarting VMs on another host if a failure is detected?

Which feature provides high availability by restarting VMs on another host if a failure is detected?

• A. vSphere Client
• B. HA
• C. DRS
• D. vMotion

Answer: (B)

High availability in a vSphere environment is provided by a feature that automatically restarts virtual machines on another healthy host when a failure is detected. It continuously monitors hosts and VMs, and if a failure occurs or a VM stops responding, it restarts the affected VMs on a different host in the same cluster, assuming there are enough resources to do so. This rapid failover minimizes downtime and keeps services available. The management console itself is just the interface to configure and monitor the environment, not the mechanism that restarts VMs after a failure. Balancing and optimizing resources across hosts (DRS) moves VMs to different hosts to improve performance, but it isn’t designed to automatically restart VMs after a failure. Live migration (vMotion) enables moving running VMs between hosts with minimal disruption, but the automatic restart-after-failure behavior is provided by the high-availability feature.

High availability in a vSphere environment is provided by a feature that automatically restarts virtual machines on another healthy host when a failure is detected. It continuously monitors hosts and VMs, and if a failure occurs or a VM stops responding, it restarts the affected VMs on a different host in the same cluster, assuming there are enough resources to do so. This rapid failover minimizes downtime and keeps services available.

The management console itself is just the interface to configure and monitor the environment, not the mechanism that restarts VMs after a failure. Balancing and optimizing resources across hosts (DRS) moves VMs to different hosts to improve performance, but it isn’t designed to automatically restart VMs after a failure. Live migration (vMotion) enables moving running VMs between hosts with minimal disruption, but the automatic restart-after-failure behavior is provided by the high-availability feature.