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A vSphere administrator needs to increase the capacity of an existing Storage Distributed Resource Scheduler (SDRS) datastore cluster. The storage administrator has provisioned two new NFS datastores to be added to the cluster.
The vSphere administrator receives an error message, preventing the administrator from adding the newly provisioned datastores to the cluster.
What is the likely reason that the action failed?
A. There are virtual machines running on the datastores being added to the cluster.
B. The datastores in the SDRS cluster are VMFS datastores.
C. The datastores in the existing cluster have hardware acceleration enabled and the new datastores do not.
D. The SDRS cluster has not been placed into maintenance mode.
Correct Answer: B
Explanation/Reference:
Explanation:
In this question, we are unable to add two new NFS datastores to a datastore cluster. The most likely reason for this failure is that the existing datastores in the cluster are VMFS datastores. NFS and VMFS datastores cannot coexist in the same datastore cluster.
A datastore cluster is a collection of datastores with shared resources and a shared management interface. Datastore clusters are to datastores what clusters are to hosts. When you create a datastore cluster, you can use vSphere Storage DRS to manage storage resources.
A datastore cluster can contain a mix of datastores with different sizes and I/O capacities, and can be from different arrays and vendors. However, NFS and VMFS datastores cannot be combined in the same datastore cluster.
Incorrect Answers:
A: The question states that the storage administrator has provisioned two new NFS datastores to be added to the cluster. As these NFS datastores have just been provisioned, it is unlikely that there are VMs running on the datastores. Therefore, this answer is incorrect.
C: It is recommended that you do not include datastores that have hardware acceleration enabled in the same datastore cluster as datastores that do not have hardware acceleration enabled. However, although recommended, it is not impossible. Datastores in the existing cluster with hardware acceleration enabled would not prevent other datastores without hardware acceleration from being added to the cluster. Therefore, this answer is incorrect.
D: You do not need to place a datastore cluster into maintenance mode to add datastores to the cluster. Therefore, this answer is incorrect.
References:
https://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.vsphere.resmgmt.doc/GUID-34A10B42-C79E-491C-A5AA-99E3B5FA2278.html