NS0-157 · Question #157
Which two actions protect an Infinite volume from the loss of a namespace constituent? (Choose two)
The correct answer is B. Mirror the namespace constituent by using an Intercluster data protection mirror C. Mirror the namespace constituent by using a load-sharing 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
How the community answered
(19 responses)- A11% (2)
- B84% (16)
- D5% (1)
Why each option
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.
An intracluster data protection mirror keeps the replica on the same cluster, which does not protect against cluster-wide failures affecting the namespace constituent.
An intercluster data protection mirror replicates the namespace constituent to a second cluster, protecting against loss of the entire source cluster or the primary namespace constituent volume.
A load-sharing mirror creates read-only copies of the namespace constituent, ensuring namespace access remains available if the primary constituent becomes unavailable.
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
Source: https://docs.netapp.com/ontap-9/topic/com.netapp.doc.dot-cm-sanag/home.html
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