An administrator has upgraded to vSphere 6.5 and also wants to use Kerberos authentication for NFS.
Which can be done to the existing NFSv3 volumes to enable this feature?
A.
Perform a storage rescan on VMFS volumes.
B.
Unmount the NFSv3 datastore, and then mount as NFSv4.1 datastore.
C.
Nothing. All NFSv3 mounted datastores are upgraded automatically during vSphere upgrades.
D.
Perform a scan of new storage devices.
?
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https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.storage.doc/GUID-8A929FE4-1207-4CC5-A086-7016D73C328F.html
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B
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B
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B should be ok.
vSphere does not support automatic datastore conversions from NFS version 3 to NFS 4.1. If you want to upgrade your NFS 3 datastore, the following options are available:
You can create a new NFS 4.1 datastore, and then use Storage vMotion to migrate virtual machines from the old datastore to the new one.
Use conversion methods provided by your NFS storage server. For more information, contact your storage vendor.
Unmount from one version and then mount as the other.
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B
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The question itself is incorrect.
NFS3 doesn’t support kerberos protocol within VMware.
Upgrade to NFS4.1 requires upgrade to the NFS NAS in the backend from NFS3 to NFS4.1 with kerberos.
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None of the available answers are correct. Simply unmounting and mounting as B suggests is not enough… As somebody indicated earlier, either VMs would have to be moved to another NFS4-formatted datastore (assuming it exists), or a NAS-specific tool must be used to do a conversion.
But, in the lack of other options, ‘B’ is the least incorrect answer.
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