NS0-157 Question #236: Real Exam Question with Answer & Explanation

The correct answer is C: Specify a SnapMirror throttle for that relationship. A per-relationship SnapMirror throttle limits the maximum transfer rate for a single SnapMirror relationship without affecting other relationships or the cluster as a whole.

Data Protection and High Availability

Question

How can you prevent a single SnapMirror relationship from utilizing more than the desired bandwidth?

Options

ASpecify a SnapMirror throttle for the destination mode
BSpecify a SnapMirror throttle for the whole cluster
CSpecify a SnapMirror throttle for that relationship
DEnable SnapMirror network compression

Explanation

A per-relationship SnapMirror throttle limits the maximum transfer rate for a single SnapMirror relationship without affecting other relationships or the cluster as a whole.

Common mistakes.

A. The throttle is applied to the relationship itself, not scoped to the destination node - specifying it only for the destination node is not a valid configuration option.
B. A cluster-wide throttle would limit all SnapMirror traffic indiscriminately rather than targeting a single relationship.
D. SnapMirror network compression reduces the volume of data sent over the wire but does not impose a bandwidth ceiling and therefore cannot guarantee a maximum throughput limit.

Concept tested. SnapMirror per-relationship bandwidth throttle

Reference. https://docs.netapp.com/us-en/ontap/data-protection/snapmirror-modify-relationship-task.html

Topics

#SnapMirror#bandwidth throttle#relationship throttle#network optimization

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