Explain the concept of vSphere Fault Tolerance and its role in providing continuous availability and protection against host failures.

vSphere Fault Tolerance (FT) is a feature in VMware vSphere that provides continuous availability and protection against host failures by creating a real-time replica of a virtual machine (VM). It ensures that if the primary VM fails, the secondary VM seamlessly takes over without any interruption or data loss. Let's dive deeper into the concept of vSphere Fault Tolerance and its role in providing continuous availability: 1. How vSphere Fault Tolerance Works: * Primary-Secondary VM Pair: vSphere FT works by creating a primary VM and a secondary VM on separate hosts within a cluster. The primary VM is the active instance running the workload, and the secondary VM is an identical replica that mirrors the primary VM's execution state. * Synchronization: The primary and secondary VMs are synchronized in real-time using VMware's vLockstep technology. This synchronization ensures that both VMs are always in the same state, with identical CPU, memory, and device execution. * Continuous Heartbeat: To detect host failures, the primary and secondary VMs exchange heartbeats over a dedicated network connection. If the primary VM stops sending heartbeats, the secondary VM assumes the role of the primary VM and takes over its....