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2V0-622D · Question #72

An administrator has configured a cluster with the Host Failures Cluster Tolerates admission control policy, as shown in the Exhibit: Based on the exhibit, which two statements are true? (Choose two.)

The correct answer is B. The cluster can sustain loss of only one node. C. The number of slots per cluster node is three.. With the Host Failures Cluster Tolerates policy set to one, the cluster tolerates only one host failure, and the slot calculation yields three slots per host.

Section 6 – Administer vSphere 6.5 Availability

Question

An administrator has configured a cluster with the Host Failures Cluster Tolerates admission control policy, as shown in the Exhibit:

Based on the exhibit, which two statements are true? (Choose two.)

Exhibit

2V0-622D question #72 exhibit

Options

  • AThe number of slots per cluster node is four.
  • BThe cluster can sustain loss of only one node.
  • CThe number of slots per cluster node is three.
  • DThe cluster can sustain the loss of two nodes.

How the community answered

(58 responses)
  • A
    5% (3)
  • B
    83% (48)
  • D
    12% (7)

Why each option

With the Host Failures Cluster Tolerates policy set to one, the cluster tolerates only one host failure, and the slot calculation yields three slots per host.

AThe number of slots per cluster node is four.

Four slots per node is incorrect; the slot calculation from the exhibit's VM reservation and host resource values produces three slots per host, not four.

BThe cluster can sustain loss of only one node.Correct

The 'Host Failures Cluster Tolerates' admission control policy set to one means vSphere HA guarantees failover capacity for only a single host failure, so losing one node is the maximum the cluster can sustain.

CThe number of slots per cluster node is three.Correct

Based on the cluster configuration shown in the exhibit, the per-host slot count is three, derived from dividing host CPU and memory capacity by the largest VM reservation values across the cluster.

DThe cluster can sustain the loss of two nodes.

Two-node failure tolerance is not possible with this policy setting; admission control is configured for exactly one host failure, so a two-node loss exceeds the defined tolerance.

Concept tested: vSphere HA admission control slot calculation and failure tolerance

Source: https://docs.vmware.com/en/VMware-vSphere/6.7/com.vmware.vsphere.avail.doc/GUID-C26D1D81-6A6E-4B13-8F1F-0C9CF3B2B08B.html

Topics

#vSphere HA#admission control#slot policy#cluster capacity

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