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2V0-622 · Question #383

Which statements regarding datastore clusters meets VMware's recommended best practices?

The correct answer is B. Clusters should contain only datastores with equal hardware acceleration capability.. VMware's best practice for SDRS datastore clusters requires that all member datastores share the same hardware acceleration capability to ensure consistent Storage DRS behavior.

Section 3 – Configure and Administer vSphere 6.5 Storage

Question

Which statements regarding datastore clusters meets VMware's recommended best practices?

Options

  • AClusters should contain only datastores presented from the same storage array.
  • BClusters should contain only datastores with equal hardware acceleration capability.
  • CClusters should contain only datastores with the same capacity.
  • DClusters should contain only datastores using the same connection method (iSCSI, FC, etc.).

How the community answered

(22 responses)
  • A
    5% (1)
  • B
    91% (20)
  • C
    5% (1)

Why each option

VMware's best practice for SDRS datastore clusters requires that all member datastores share the same hardware acceleration capability to ensure consistent Storage DRS behavior.

AClusters should contain only datastores presented from the same storage array.

VMware does not require datastores to originate from the same storage array; datastores from different arrays can coexist in a cluster as long as their capabilities match.

BClusters should contain only datastores with equal hardware acceleration capability.Correct

When datastores with different hardware acceleration (VAAI) capabilities are mixed in a datastore cluster, Storage DRS cannot uniformly leverage offload primitives such as full-copy or atomic test-and-set, leading to inconsistent performance and unreliable placement recommendations. VMware explicitly recommends ensuring all datastores in a cluster have the same VAAI capability level to avoid these disparities. Mismatched acceleration capability is considered the most operationally impactful configuration error in an SDRS cluster.

CClusters should contain only datastores with the same capacity.

While similar capacity across datastores is advisable, VMware does not mandate exactly equal capacity as a best practice requirement for cluster membership.

DClusters should contain only datastores using the same connection method (iSCSI, FC, etc.).

Using a single connection method (FC, iSCSI, NFS) is not a VMware best practice requirement, and mixed protocols are not explicitly prohibited in an SDRS cluster.

Concept tested: SDRS datastore cluster hardware acceleration best practices

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-5E5E349A-4644-4C9C-B434-1C0243EBDC80.html

Topics

#datastore clusters#SDRS#hardware acceleration#best practices

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