To utilize vSphere Fault Tolerance, which feature must be enabled?

To utilize vSphere Fault Tolerance (FT), it is necessary to enable vSphere High Availability (HA). This is because vSphere HA complements Fault Tolerance by providing a mechanism for automating the recovery of virtual machines (VMs) in the event of a hardware failure.

Fault Tolerance works by creating a live shadow copy of a VM that runs in lockstep with the primary VM. For this to be effective, the HA feature ensures that if the primary VM fails, the shadow VM can take over without any loss of data or significant downtime. HA facilitates the overall availability and reliability of the infrastructure, thereby enhancing the ability of FT to maintain continuity during failures.

While other options like vSphere DRS, vSphere Replication, and vSAN offer important capabilities for resource management, data protection, and storage, they do not directly relate to enabling Fault Tolerance. DRS manages load balancing of resources, Replication focuses on data recovery, and vSAN provides storage solutions, but none of these features specifically enable the Fault Tolerance mechanism that relies on HA for its operational efficiency.