Which vSphere feature protects against host hardware failures by restarting virtual machines (VMs) on hosts that are running in the cluster?

vSphere HA monitors vSphere hosts for failures and, in the event of a host outage, automatically restarts the affected virtual machines on other operational hosts in the cluster. This proactive measure ensures high availability for applications running in virtual machines by migrating their execution to healthy hardware.

vSphere vMotion is used for live migration of running virtual machines from one host to another without downtime, typically for maintenance or load balancing, not for automatic restart after a host failure.

vSphere Fault Tolerance provides continuous availability by creating a secondary, identical VM that takes over instantly upon a primary VM failure, ensuring zero downtime, which is different from restarting a VM on another host.

vSphere DRS (Distributed Resource Scheduler) focuses on dynamic load balancing and resource allocation among hosts in a cluster, automatically migrating VMs to optimize performance, not on restarting VMs due to host failures.