NS0-157 Question #405: Real Exam Question with Answer & Explanation

The correct answer is B. 16. This question tests the ability to calculate total SAN multipath LUN paths from a given storage topology exhibit showing host HBA ports and controller target ports.

Network Configuration and Data Access

Question

Click the Exhibit button. Referring to the exhibit, how many paths to the LUN will the host see?

Exhibit

Options

Explanation

This question tests the ability to calculate total SAN multipath LUN paths from a given storage topology exhibit showing host HBA ports and controller target ports.

Common mistakes.

A. 32 paths would require doubling the initiator or target ports beyond what the exhibit topology depicts, such as 4 HBA ports connecting to 4 controllers with 4 ports each.
C. 8 paths would result from a reduced topology, such as 2 HBA ports connecting to 2 controllers that each expose only 2 FC target ports.
D. 4 paths represent a minimal single-fabric configuration with 1 initiator port and 2 controllers each providing only 2 target ports, which is far fewer than shown.

Concept tested. SAN multipath LUN path count calculation

Reference. https://docs.netapp.com/us-en/ontap/san-admin/multipathing-concept.html

Topics

#LUN paths#multipathing#SAN#FC/iSCSI paths

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