VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

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What is a potential reason for an NFS datastore showing a capacity of 0 bytes?

  1. Configuration with NFS version 4.1.

  2. The datastore has been set to Read-Only mode.

  3. The server hosting the NFS is not reachable.

  4. The NFS is incorrectly mounted.

The correct answer is: The server hosting the NFS is not reachable.

When an NFS datastore shows a capacity of 0 bytes, one of the potential reasons can indeed be that the server hosting the NFS is not reachable. In this situation, if the storage server is down or there is a network issue preventing access to the NFS server, the vSphere client will be unable to retrieve the storage information, resulting in a display of 0 bytes available. This scenario emphasizes the importance of network connectivity and server availability in a virtualized environment, especially when mounting NFS datastores. If the NFS server is unreachable due to network configuration issues, server failures, or miscommunication, the datastores become inaccessible, which manifests as a capacity of 0 bytes in the management interface. Factors like the NFS version being used, the datastore being set to Read-Only, or incorrect mounting configurations could lead to other types of issues, but they are not directly responsible for the appearance of 0 bytes capacity. For example, while an incorrect mount could lead to access issues, it would most likely still show some capacity information, albeit potentially inaccessible data. Conversely, a Read-Only state would still allow the datastore to report its capacity.

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