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

The correct answer is B: Mirror the namespace constituent by using an Intercluster data protection mirror. Two methods protect an Infinite volume namespace constituent: an intercluster DP mirror for disaster recovery on a remote cluster, and a load-sharing mirror for local redundancy and read distribution.

Question

Which two actions protect an Infinite volume from the loss of a namespace constituent? (Choose two)

Options

AMinor the namespace constituent by using an intracluster data protection mirror
BMirror the namespace constituent by using an Intercluster data protection mirror
CMirror the namespace constituent by using a load-sharing mirror
DMirror the namespace constituent by using a FlexCache mirror

Explanation

Two methods protect an Infinite volume namespace constituent: an intercluster DP mirror for disaster recovery on a remote cluster, and a load-sharing mirror for local redundancy and read distribution.

Common mistakes.

A. An intracluster data protection mirror keeps the replica on the same cluster, which does not protect against cluster-wide failures affecting the namespace constituent.
D. FlexCache volumes are used to cache and accelerate read access to data volumes, and are not a supported mechanism for protecting Infinite volume namespace constituents.

Concept tested. Infinite volume namespace constituent protection methods

Reference. https://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm-sanag/home.html

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