What is a primary benefit of using vSphere Fault Tolerance?

The primary benefit of using vSphere Fault Tolerance is that it provides high availability for virtual machines. This feature ensures that virtual machines remain operational even in the event of hardware failures or host crashes. Fault Tolerance works by creating a live shadow instance of a virtual machine that runs on a separate host; if the primary instance fails, the shadow instance immediately takes over without any downtime. This capability is crucial for businesses that require continuous operations and cannot afford interruptions, enhancing the overall reliability and availability of critical applications.

The other options do not accurately represent the main purpose of Fault Tolerance. While it may indirectly impact costs and server utilization, those are not its primary functions. Fault Tolerance specifically aims to keep virtual machines running seamlessly in the face of failures, making high availability its core benefit.