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2V0-622 · Question #86

During a vCenter Server upgrade, an ESXi 6.x host in a High Availability (HA) cluster fails. Which statement is true?

The correct answer is A. HA will fail the virtual machines over to an available host during the vCenter Server upgrade. VMware HA agents run directly on ESXi hosts and operate independently of vCenter Server, so host failure protection remains active even while vCenter is being upgraded.

Section 6 – Administer vSphere 6.5 Availability

Question

During a vCenter Server upgrade, an ESXi 6.x host in a High Availability (HA) cluster fails. Which statement is true?

Options

  • AHA will fail the virtual machines over to an available host during the vCenter Server upgrade
  • BHA is unavailable during the vCenter Server upgrade process.
  • CHA will fail the virtual machines over to an available host after the vCenter Server upgrade
  • DHA will successfully vMotion the virtual machines during the host failure.

How the community answered

(49 responses)
  • A
    82% (40)
  • B
    10% (5)
  • C
    6% (3)
  • D
    2% (1)

Why each option

VMware HA agents run directly on ESXi hosts and operate independently of vCenter Server, so host failure protection remains active even while vCenter is being upgraded.

AHA will fail the virtual machines over to an available host during the vCenter Server upgradeCorrect

HA relies on host-to-host heartbeat communication between ESXi agents, not on vCenter Server availability. If an ESXi host fails during a vCenter upgrade, the HA agents on the remaining hosts detect the failure and restart the affected virtual machines on available hosts without vCenter intervention.

BHA is unavailable during the vCenter Server upgrade process.

HA does not lose functionality when vCenter is unavailable or upgrading - the protection plane runs on the ESXi hosts themselves and is decoupled from vCenter's management plane.

CHA will fail the virtual machines over to an available host after the vCenter Server upgrade

HA failover occurs at the moment of host failure detection, not after the vCenter upgrade completes - waiting for vCenter would defeat the purpose of automated protection.

DHA will successfully vMotion the virtual machines during the host failure.

vMotion is a live migration feature that requires vCenter Server to orchestrate; it cannot run while vCenter is being upgraded, and a host failure makes live migration impossible anyway.

Concept tested: VMware HA availability independent of vCenter Server

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-33A65FF7-DA22-4DC5-8B18-5A7F97CCA536.html

Topics

#High Availability#vCenter upgrade#host failure#HA behavior

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