Which vSphere 6 Enterprise Edition feature will allow an organization to ensure that critical multi- threaded applications have the maximum possible uptime?

vSphere Fault Tolerance uses vLockstep technology to maintain a live Secondary VM that mirrors the Primary VM in real time on a separate host, ensuring zero downtime and zero data loss if a host failure occurs. Starting with vSphere 6 Enterprise Edition, FT was extended to support up to 4 vCPUs, making it the appropriate solution for critical multi-threaded applications that require the maximum possible uptime - overcoming the single-vCPU limitation present in earlier versions.

High Availability restarts VMs on surviving hosts after a failure, which involves minutes of downtime during the restart process and does not provide continuous availability.

Distributed Resource Scheduler balances CPU and memory load across cluster hosts using vMotion but provides no protection against host failures and cannot ensure uptime for any application.

App HA monitors in-guest application health and can restart VMs when an application-level failure is detected, but it introduces downtime during VM restart and is not designed for hardware-level fault tolerance.