In a cluster, what VMware vSphere feature allows a virtual machine to run a replica of itself on a different host to allow for seamless fail-over in case of host failure?

In a cluster, what VMware vSphere feature allows a virtual machine to run a replica of itself on a different host to allow for seamless fail-over in case of host failure?

• Distributed Resource Scheduler
• Fault Tolerance
• High Availability
• vMotion 

 

EXPLANATION

With Fault Tolerance, a replica VM is created on a different host in the cluster to work in sync with the primary virtual machine on which Fault Tolerance is enabled. When host failure is detected,
the replica VM takes place of the primary virtual machine with no downtime. This differs from High Availability in that the virtual machine is typically restarted on to another host, requiring downtime.

SOURCE

https://pubs.vmware.com/vsphere-60/index.jsp?topic=%2Fcom.vmware.vsphere.avail.doc%2FGUID-623812E6-D253-4FBC-B3E1-6FBFDF82ED21.html