2V0-620 · Question #195
An administrator is using the Host Failures to Tolerate Admission Control Policy for a vSphere High Availability (HA) cluster. When configuring this setting on the cluster, the administrator sees…
The correct answer is A. The hosts in the cluster are disconnected. B. A host in the cluster is displaying an HA error. vSphere HA admission control calculates failover capacity only from connected, healthy hosts; disconnected hosts and hosts reporting HA errors reduce available resources below the configured tolerance threshold.
Question
An administrator is using the Host Failures to Tolerate Admission Control Policy for a vSphere High Availability (HA) cluster. When configuring this setting on the cluster, the administrator sees this error message:
Insufficient resources to satisfy HA failover level on cluster What are two likely causes for the error? (Choose two.)
Options
- AThe hosts in the cluster are disconnected.
- BA host in the cluster is displaying an HA error.
- CDistributed Resource Scheduler has not been configured on the cluster.
- DVirtual Machine Component Protection has not been turned on.
How the community answered
(41 responses)- A51% (21)
- C20% (8)
- D29% (12)
Why each option
vSphere HA admission control calculates failover capacity only from connected, healthy hosts; disconnected hosts and hosts reporting HA errors reduce available resources below the configured tolerance threshold.
Disconnected hosts are excluded from HA's resource pool calculations entirely, so the cluster's aggregate CPU and memory available for failover may fall below what the Host Failures to Tolerate policy requires, causing the admission control error.
A host displaying an HA error (such as an agent failure or configuration issue) is not treated as a viable failover target, reducing effective cluster capacity below the configured failover threshold.
DRS is independent of HA admission control; HA calculates and enforces failover resource reservations without requiring DRS to be configured on the cluster.
Virtual Machine Component Protection addresses datastore accessibility failures and is a separate HA sub-feature that has no effect on the Host Failures to Tolerate admission control calculation.
Concept tested: vSphere HA Host Failures to Tolerate admission control error conditions
Source: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.avail.doc/GUID-C4F5F9AE-3D5D-4A34-98A7-0862B66C943F.html
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