How can vMotion be enabled in VMware vSphere?

vMotion enables the live migration of virtual machines from one ESXi host to another without downtime, allowing for maintenance and load balancing of resources within a vSphere environment. The correct approach to enable vMotion is through the configuration of ESXi hosts and shared storage.

When you enable vMotion, it requires that the ESXi hosts involved in the migration be part of the same vCenter Server and that they have been configured properly for networking (with vMotion-enabled VMkernel ports) and that they access shared storage. Shared storage ensures that the virtual machine files remain accessible during migration, enabling the quick transfer of state without requiring a complete file copy.

The other options do not directly relate to the mechanics of enabling vMotion. Changing the VM CPU allotment, while potentially important for performance, does not impact the ability to use vMotion itself. Resetting the network settings may disrupt connectivity, which would be counterproductive to successfully enabling vMotion. Additionally, installing additional software on VMs is unnecessary since vMotion is a built-in feature of vSphere that does not require any specific VM-level software installations.