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NS0-157 · Question #209

To maintain a cluster quorum, Epsilon functions as a ________.?

The correct answer is D. tie-breaker. Epsilon is a special fractional vote assigned to one node in a NetApp ONTAP cluster to break ties and maintain quorum when the cluster has an even number of surviving nodes.

ONTAP Cluster Fundamentals

Question

To maintain a cluster quorum, Epsilon functions as a ________.?

Options

  • Aduplicated management database
  • Bmaster node
  • Csecondary node
  • Dtie-breaker

How the community answered

(38 responses)
  • A
    3% (1)
  • C
    5% (2)
  • D
    92% (35)

Why each option

Epsilon is a special fractional vote assigned to one node in a NetApp ONTAP cluster to break ties and maintain quorum when the cluster has an even number of surviving nodes.

Aduplicated management database

Epsilon is not a duplicated management database - it is a special voting weight, not a data replication mechanism.

Bmaster node

Epsilon does not make a node a master node - ONTAP cluster management is distributed and epsilon only affects quorum voting, not management authority.

Csecondary node

Epsilon is not a secondary node designation - it is a fractional vote attribute that can be assigned to any node regardless of its role.

Dtie-breakerCorrect

Epsilon carries an extra fractional vote that resolves split-vote scenarios, allowing the node holding epsilon to tip the balance and establish quorum. Without a tie-breaker, a cluster with an even number of nodes that splits evenly could not determine which partition should remain operational. Only one node holds epsilon at a time, and it can be moved manually if needed.

Concept tested: ONTAP cluster quorum epsilon tie-breaker role

Source: https://docs.netapp.com/us-en/ontap/system-admin/cluster-quorum-epsilon-concept.html

Topics

#cluster quorum#Epsilon#tie-breaker#cluster fundamentals

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