NS0-157 Question #275: Real Exam Question with Answer & Explanation

The correct answer is C: A single node cluster is supported but cannot grow beyond one node. Data ONTAP 8.2 and later supports single-node clusters as a valid deployment option, but once deployed as a single-node cluster it cannot be expanded to a multi-node cluster.

ONTAP Cluster Fundamentals

Question

Which statement is true regarding a single node cluster with Data ONTAP 8.2 or later?

Options

AA single node cluster is supported and can grow beyond one node.
BA single node cluster is NOT supported
CA single node cluster is supported but cannot grow beyond one node
DA single node cluster is supported with 10GbE cross connects between an onboard NIC and PCIe

Explanation

Data ONTAP 8.2 and later supports single-node clusters as a valid deployment option, but once deployed as a single-node cluster it cannot be expanded to a multi-node cluster.

Common mistakes.

A. A single-node cluster cannot grow beyond one node; converting to a multi-node cluster is not a supported operation in this configuration.
B. Single-node clusters are explicitly supported starting with Data ONTAP 8.2, so stating they are not supported is incorrect.
D. 10GbE cross connects between an on-board NIC and a PCIe card describe a cluster interconnect requirement for multi-node clusters, not a defining characteristic of single-node cluster support.

Concept tested. Data ONTAP 8.2 single-node cluster support and limitations

Reference. https://docs.netapp.com/us-en/ontap/system-admin/single-node-clusters-concept.html

Topics

#single node cluster#cluster expansion#ONTAP 8.2#cluster limitations

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