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2V0-621D · Question #181

Which two scenarios would cause a Fault Tolerance-enabled virtual machine to fail to power the Secondary virtual machine? (Choose two.)

The correct answer is A. The host has entered a Network Partitioned state. B. vSphere High Availability (HA) is disabled on the host cluster. This question identifies two conditions that would prevent a vSphere Fault Tolerance (FT) Secondary virtual machine from powering on.

Section 6 – Administer vSphere 6.x Availability

Question

Which two scenarios would cause a Fault Tolerance-enabled virtual machine to fail to power the Secondary virtual machine? (Choose two.)

Options

  • AThe host has entered a Network Partitioned state.
  • BvSphere High Availability (HA) is disabled on the host cluster.
  • CEnhanced vMotion Compatibility (EVC) is enabled on the host cluster.
  • DvSphere Distributed Power Management (DPM) is enabled on the host cluster.

How the community answered

(45 responses)
  • A
    80% (36)
  • C
    13% (6)
  • D
    7% (3)

Why each option

This question identifies two conditions that would prevent a vSphere Fault Tolerance (FT) Secondary virtual machine from powering on.

AThe host has entered a Network Partitioned state.Correct

If a host enters a Network Partitioned state, it loses network connectivity with other hosts in the cluster, preventing the primary and secondary FT VMs from maintaining their synchronization and heartbeat, thus failing to power on the secondary.

BvSphere High Availability (HA) is disabled on the host cluster.Correct

vSphere Fault Tolerance relies on vSphere High Availability (HA) to function correctly, particularly for initial placement and automatic restart capabilities. If HA is disabled on the cluster, FT cannot operate, and the secondary VM will fail to power on.

CEnhanced vMotion Compatibility (EVC) is enabled on the host cluster.

Enhanced vMotion Compatibility (EVC) ensures CPU compatibility across hosts for vMotion, which is not directly related to Fault Tolerance's ability to power on a secondary VM.

DvSphere Distributed Power Management (DPM) is enabled on the host cluster.

vSphere Distributed Power Management (DPM) manages host power states to conserve energy and does not inherently prevent a Fault Tolerance secondary VM from powering on.

Concept tested: vSphere Fault Tolerance requirements and dependencies

Source: https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-availability/GUID-02EF4791-DC3E-4122-A1C1-B7020E671465.html

Topics

#Fault Tolerance#vSphere HA#network partitioning#VM availability

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