2V0-620 · Question #52
What may be a cause for failure to unmount an NFS datastore?
The correct answer is A. It has active snapshot files. VMware prevents unmounting a datastore when it has active files in use. Snapshot files (.vmdk delta disks and .vmsd files) residing on the NFS datastore count as active file references tied to a VM, blocking the unmount operation. The host considers the datastore in use as long…
Question
What may be a cause for failure to unmount an NFS datastore?
Options
- AIt has active snapshot files.
- BIt is being used for High Availability (HA) heartbeat.
- CIt is part of a Cluster.
- DIt is managed by Distributed Resource Scheduler (DRS).
How the community answered
(16 responses)- A81% (13)
- B6% (1)
- D13% (2)
Explanation
VMware prevents unmounting a datastore when it has active files in use. Snapshot files (.vmdk delta disks and .vmsd files) residing on the NFS datastore count as active file references tied to a VM, blocking the unmount operation. The host considers the datastore in use as long as any VM file - including snapshots - references it. While HA heartbeat datastores (B) can also block unmounting, the direct cause of failure in this scenario is the presence of active snapshot files on the datastore.
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