NS0-157 · Question #382
If a customer has a 2-node cluster, which of the following must be enabled for storage failover (SFO) to function properly?
The correct answer is A. cluster ha modify -configured true. In a 2-node ONTAP cluster, cluster HA must be explicitly enabled so the nodes can manage quorum and storage failover without a third arbitrating node.
Question
If a customer has a 2-node cluster, which of the following must be enabled for storage failover (SFO) to function properly?
Options
- Acluster ha modify -configured true
- Bcluster modify -node -eligibility true
- Cstorage failover modify -node enabled true
- Dstorage failover modify -node -hwassist true
How the community answered
(43 responses)- A95% (41)
- B2% (1)
- C2% (1)
Why each option
In a 2-node ONTAP cluster, cluster HA must be explicitly enabled so the nodes can manage quorum and storage failover without a third arbitrating node.
A 2-node cluster has no dedicated cluster management node, so `cluster ha modify -configured true` must be run to enable cluster HA mode. This setting tells ONTAP to use the partner node for management functions and is a prerequisite for storage failover to operate correctly - without it, SFO cannot properly detect or execute takeover in a 2-node topology.
`cluster modify -node -eligibility true` controls whether a node can participate in the cluster, not whether HA failover is configured.
`storage failover modify -node enabled true` enables SFO on an individual node but is insufficient alone in a 2-node cluster where cluster HA mode must also be set.
`storage failover modify -node -hwassist true` enables hardware-assisted takeover for faster failure detection, which is optional and not required for basic SFO functionality.
Concept tested: 2-node cluster HA configuration for storage failover
Source: https://docs.netapp.com/us-en/ontap/high-availability/two-node-clusters-concept.html
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