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2V0-622D · Question #237

An ESXi host has been placed into Quarantine Mode by Proactive HA. What will happen?

The correct answer is A. Virtual machines will be migrated off the quarantines host if doing so will not violate any DRS. Proactive HA Quarantine Mode migrates VMs off the affected host only when doing so does not violate existing DRS rules, unlike Maintenance Mode which forces full evacuation.

Section 6 – Administer vSphere 6.5 Availability

Question

An ESXi host has been placed into Quarantine Mode by Proactive HA. What will happen?

Options

  • AVirtual machines will be migrated off the quarantines host if doing so will not violate any DRS
  • BNewly powered-on virtual machines may be placed on the quarantined host to balance cluster
  • CAll virtual machines will be migrated off the quarantined host to other hosts in the cluster without
  • DvSphere HA will conduct a failover on all VMs residing on the quarantined host.

How the community answered

(32 responses)
  • A
    84% (27)
  • B
    6% (2)
  • C
    3% (1)
  • D
    6% (2)

Why each option

Proactive HA Quarantine Mode migrates VMs off the affected host only when doing so does not violate existing DRS rules, unlike Maintenance Mode which forces full evacuation.

AVirtual machines will be migrated off the quarantines host if doing so will not violate any DRSCorrect

Quarantine Mode is a soft signal from Proactive HA indicating degraded host health; DRS will attempt to migrate VMs away from the host but only if those migrations comply with existing VM-VM affinity and anti-affinity rules and other DRS constraints. This behavior is intentionally less disruptive than Maintenance Mode, preserving rule integrity while reducing workload on a potentially failing host.

BNewly powered-on virtual machines may be placed on the quarantined host to balance cluster

Quarantine Mode explicitly prevents new or newly powered-on VMs from being placed on the quarantined host, so DRS will not use it as a balancing target.

CAll virtual machines will be migrated off the quarantined host to other hosts in the cluster without

Forcibly migrating all VMs regardless of DRS rule violations describes Maintenance Mode behavior, not Quarantine Mode, which respects DRS constraints throughout.

DvSphere HA will conduct a failover on all VMs residing on the quarantined host.

vSphere HA failover is triggered by host failure detection, not by Proactive HA degradation signals like Quarantine Mode.

Concept tested: Proactive HA Quarantine Mode vs Maintenance Mode VM migration behavior

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-F01F7EB8-FF9D-45E2-A093-5F56A788D027.html

Topics

#Proactive HA#quarantine mode#DRS integration#VM migration behavior

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