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2V0-621 · Question #208

Refer to the Exhibit. An administrator recently created a Virtual SAN but no Storage Policies were defined. A few virtual machines were deployed to this cluster. The administrator analyzes the default

The correct answer is A. Losing one cluster node will not affect data availability. B. Losing one Hard Disk in a cluster node will not affect data availability.. The default vSAN storage policy sets 'Number of Failures to Tolerate' (FTT) to 1, meaning the cluster maintains an additional data replica that protects availability when any single host or disk is lost.

Section 3 – Configure and Administer vSphere 6.x Storage

Question

Refer to the Exhibit. An administrator recently created a Virtual SAN but no Storage Policies were defined. A few virtual machines were deployed to this cluster. The administrator analyzes the default Virtual SAN policy as shown in the Exhibit. Based on the exhibit, which two statements are true? (Choose two.)

Exhibit

2V0-621 question #208 exhibit

Options

  • ALosing one cluster node will not affect data availability.
  • BLosing one Hard Disk in a cluster node will not affect data availability.
  • CCreating a virtual machine Swap file will fail if it violates default storage policy.
  • DCreating a virtual machine will succeed even if it violates default storage policy.

How the community answered

(24 responses)
  • A
    83% (20)
  • C
    4% (1)
  • D
    13% (3)

Why each option

The default vSAN storage policy sets 'Number of Failures to Tolerate' (FTT) to 1, meaning the cluster maintains an additional data replica that protects availability when any single host or disk is lost.

ALosing one cluster node will not affect data availability.Correct

With FTT=1, vSAN keeps at least two copies of every data object across different hosts. Losing one cluster node still leaves a complete replica accessible on the remaining hosts, so data availability is maintained.

BLosing one Hard Disk in a cluster node will not affect data availability.Correct

FTT=1 also tolerates the failure of a single hard disk within any cluster node because the redundant object replica stored on a separate host remains fully accessible.

CCreating a virtual machine Swap file will fail if it violates default storage policy.

vSAN applies a dedicated, more permissive internal policy to VM swap files (typically FTT=0) rather than the default storage policy, so swap file creation will not fail due to a default policy violation.

DCreating a virtual machine will succeed even if it violates default storage policy.

The default vSAN policy has 'Force Provisioning' disabled, meaning VM creation will fail rather than succeed if the cluster lacks the resources to satisfy the FTT=1 requirement.

Concept tested: vSAN default storage policy FTT fault tolerance

Source: https://docs.vmware.com/en/VMware-vSAN/7.0/com.vmware.vsphere.vsan.doc/GUID-FE61CF17-5B84-4D3D-B42B-A61C4D0B8A20.html

Topics

#vSAN#storage policy#failures to tolerate#data availability

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