What does vMotion allow administrators to do?

vMotion is a powerful feature in VMware environments that enables administrators to migrate a running virtual machine (VM) from one physical host to another without downtime. This process allows for seamless load balancing of resources, hardware maintenance, or changes in server configurations while ensuring that the VM remains operational throughout the process.

By facilitating live migrations, vMotion enhances resource management, reduces the risk of service interruptions, and provides flexibility in maintaining the infrastructure. This makes it particularly useful in environments where high availability and continuity of services are crucial.

The other options pertain to different functionalities: transferring storage typically involves Storage vMotion, which specifically handles VM disk file migrations, while backing up data and rebooting a VM remotely are general administrative tasks that do not leverage the unique capabilities of vMotion.