2V0-622D · Question #289
Which statement 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 recommends that all datastores in a datastore cluster share equal hardware acceleration capability so Storage DRS can make consistent, reliable placement decisions.
Question
Which statement 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 using the same connection method (iSCSI, FC, etc.).
- DClusters should contain only datastores with the same capacity.
How the community answered
(47 responses)- A2% (1)
- B96% (45)
- C2% (1)
Why each option
VMware recommends that all datastores in a datastore cluster share equal hardware acceleration capability so Storage DRS can make consistent, reliable placement decisions.
VMware does not require datastores in a cluster to originate from the same storage array; datastores from multiple arrays are fully supported within a single datastore cluster.
When some datastores support VAAI hardware acceleration and others do not, Storage DRS cannot uniformly offload operations or compare performance metrics across the cluster, leading to inconsistent behavior and potential placement errors. Ensuring uniform hardware acceleration capability across all member datastores is a VMware-documented best practice for stable Storage DRS operation.
Mixed connection methods such as iSCSI and FC are permitted within a datastore cluster; the connection protocol itself is not a constraint VMware imposes on cluster membership.
Datastores in a cluster are not required to have identical capacity; different sizes are supported, though equal capacity is often preferable for balanced load distribution.
Concept tested: Datastore cluster VAAI uniformity best practice
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-F08C5C8E-57DC-4AC6-B50A-BE39F8D7C56C.html
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