FT is a feature in VMware vSphere that provides continuous availability for virtual machines by creating a live shadow instance of a VM that is always up-to-date with the primary VM.
The feature that helps maintain zero data loss when a virtual machine on an ESXi server fails unexpectedly is:
A. Fault Tolerance
Fault Tolerance (FT) is a feature in VMware vSphere that provides continuous availability for virtual machines by creating a live shadow instance of a VM that is always up-to-date with the primary VM. In case of a hardware failure or an unexpected VM failure on the primary host, the secondary shadow instance instantly takes over without interruption or data loss, ensuring continuous operation and zero downtime. FT ensures that there's no data loss because both the primary and secondary VMs have the same state at all times, allowing for seamless failover without disruption.
response is A, the goal is zero downtime so:
The best use for fault tolerance is to mirror virtual machines that are running critical
applications and require nearly zero downtime. Because FT is easy to configure and
manage, it can be useful for applications that may not be critical but would be problematic
if they failed.
A
Fault Tolerance provides continuous availability by ensuring that the states of the Primary and
Secondary VMs are identical at any point in the instruction execution of the virtual machine.
Selected Answer: A
vSphere Fault Tolerance Provides Continuous Availability
The functioning ESXi host seamlessly becomes the Primary VM host without losing network connections or in-progress transactions. With transparent failover, there is no data loss and network connections are maintained. After a transparent failover occurs, a new Secondary VM is respawned and redundancy is re-established. The entire process is transparent and fully automated and occurs even if vCenter Server is unavailable.
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