2V0-621 · Question #216
Refer to the Exhibit. An administrator receives an error on a vSphere cluster as shown in the Exhibit. Based on the exhibit, which three configuration changes can resolve the error? (Choose three.)
The correct answer is A. Change the Admission Control policy for the cluster. B. Adjust CPU and Memory reservations of the virtual machines. C. Increase the amount of failover resources in the cluster.. A vSphere HA admission control error indicates the cluster cannot guarantee failover capacity; it can be resolved by modifying the admission control policy, reducing VM reservations, or adding more failover resources.
Question
Refer to the Exhibit. An administrator receives an error on a vSphere cluster as shown in the Exhibit. Based on the exhibit, which three configuration changes can resolve the error? (Choose three.)
Exhibit
Options
- AChange the Admission Control policy for the cluster.
- BAdjust CPU and Memory reservations of the virtual machines.
- CIncrease the amount of failover resources in the cluster.
- DReconfigure the ESXi host cluster for High Availability.
- EDisable Virtual Machine Monitoring.
How the community answered
(43 responses)- A60% (26)
- D26% (11)
- E14% (6)
Why each option
A vSphere HA admission control error indicates the cluster cannot guarantee failover capacity; it can be resolved by modifying the admission control policy, reducing VM reservations, or adding more failover resources.
Changing the Admission Control policy - for example switching from a percentage-based policy to a slot-based one, or adjusting the configured failover percentage - directly alters what resources HA considers reserved for failover and can eliminate the violation.
Lowering CPU and memory reservations on virtual machines reduces the slot size or the total reserved capacity HA must account for, freeing enough headroom to satisfy the admission control requirement.
Increasing failover resources by adding hosts or memory to the cluster directly raises the available capacity HA can use for failover, resolving the resource shortfall that triggered the error.
Reconfiguring HA on the cluster would re-enable or reset the HA service but would not change the underlying resource imbalance that causes the admission control error.
VM Monitoring is a HA feature that restarts VMs that become unresponsive; disabling it has no effect on admission control calculations or failover resource availability.
Concept tested: vSphere HA admission control error resolution
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-85D9D717-F716-4B23-88B6-C9F4A2C6E0CC.html
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