What is a characteristic of a Fault Tolerant VM?

A Fault Tolerant VM is designed to provide high availability by creating a shadow instance that runs on a different host. This shadow instance continuously mirrors the primary VM, ensuring that if the primary fails, the shadow can take over seamlessly without any downtime. This characteristic fundamentally enables businesses to maintain continuity even during hardware failures. The shadow instance operates in synchronization with the primary VM, thus preserving the state and ongoing operations, which is critical in environments that require uninterrupted service.

Other options do not accurately reflect the functionality of Fault Tolerance in vSphere. For instance, the resource usage of a Fault Tolerant VM typically results in increased CPU and memory requirements due to the need to maintain a live shadow copy. Furthermore, a Fault Tolerant VM can operate across multiple ESXi hosts, which is crucial for its redundancy and failover capabilities. Finally, Fault Tolerance is not limited to a single network segment; it can operate within broader network configurations, allowing for versatile deployment across various networking environments.