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1.Select the Hosts & Clusters view. 2 Right-click a single virtual machine and select Fault Tolerance > Turn On Fault Tolerance. If you select more than one virtual machine, the Fault Tolerance menu is disabled. You must turn Fault Tolerance on for one virtual machine at a time. The specified virtual machine is designated as a Primary VM and a Secondary VM is established on another host. The Primary VM is now fault tolerant.
