NS0-157 · Question #174
Which four statements are true about a node's vol0 volume? (Choose four.)
The correct answer is A. It cannot be moved with the volume move command. B. It contains RDB databases and log files. D. It is not part of the namespace. E. One exists on every node in the cluster. The vol0 (node root volume) in ONTAP is a system-critical volume that holds cluster infrastructure data and exists on every node, but should never be used for user data.
Question
Which four statements are true about a node's vol0 volume? (Choose four.)
Options
- AIt cannot be moved with the volume move command.
- BIt contains RDB databases and log files.
- CIt is the most efficient place to store critical user data.
- DIt is not part of the namespace.
- EOne exists on every node in the cluster.
How the community answered
(29 responses)- A90% (26)
- C10% (3)
Why each option
The vol0 (node root volume) in ONTAP is a system-critical volume that holds cluster infrastructure data and exists on every node, but should never be used for user data.
vol0 cannot be relocated using the volume move command because it is the node root volume and hosts critical system files required for node operation.
vol0 stores the replicated database (RDB) files and associated log files that maintain cluster configuration consistency across all nodes.
vol0 is the least appropriate place for user data because it is a system volume with limited capacity and its consumption can destabilize node operation.
vol0 is not exposed in the SVM namespace and is not accessible to NAS clients; it is an internal system volume.
Every node in an ONTAP cluster has exactly one vol0, as it is required for the node to boot and participate in the cluster.
Concept tested: ONTAP node root volume (vol0) characteristics
Source: https://docs.netapp.com/us-en/ontap/system-admin/node-root-volumes-aggregates-concept.html
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