Which feature of virtual machines allows for increased uptime and faster recovery from failures?

The feature of virtual machines that allows for increased uptime and faster recovery from failures is associated with live migration and fault tolerance. Live migration enables you to move a running virtual machine from one physical server to another without downtime. This capability is crucial for maintenance activities or load balancing, ensuring that applications remain available even during server upgrades or failures.

On the other hand, fault tolerance provides an additional layer of resilience by creating a live shadow instance of a virtual machine that can instantly take over in the event of a failure. This continuous availability ensures that the virtual machine remains operational, significantly reducing recovery times during incidents.

While other features such as high availability settings can enhance uptime by automatically restarting virtual machines on other hosts in case of a failure, the combination of live migration and fault tolerance directly addresses both uptime and rapid recovery from failures by maintaining operational continuity and minimizing service interruption.