A vSphere administrator configures a preferred heartbeat datastore in an HA/DRS cluster
configuration. The vCenter Server identifies an alternative preferred datastore.
Why would vCenter Server identify an alternative preferred datastore over the administrator’s
preference?
A.
The selected datastore contains powered-on virtual machines.
B.
The selected datastore is formatted with a 1 MB block size.
C.
The selected datastore is an NFS datastore.
D.
The selected datastore is not accessible to all of the hosts.
Explanation:
D is correct
because a specified datastore is not optimal for host accessibility and storage backing redundancy. More specifically, the datastore might not be chosen if it is accessible to only a small set of hosts in the cluster. A datastore also might not be chosen if it is on the same LUN or the same NFS server as datastores that vCenter Server has already chosen.
https://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.troubleshooting.doc%2FGUID-333C3315-A862-470E-8DA9-6FE45C8C8E38.html
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