NS0-157 · Question #283
Which of the following statements are true about data protection mirrors? (Choose all that apply)
The correct answer is A. A data protection source volume supports up to 4 destination mirrored volumes C. A volume must be created before it can be used as a mirror destination. A DP source volume supports up to 4 mirror destinations, and the destination volume must be pre-created as a DP-type volume before the mirror relationship is established.
Question
Which of the following statements are true about data protection mirrors? (Choose all that apply)
Options
- AA data protection source volume supports up to 4 destination mirrored volumes
- BA data protection source volume supports up to 1 destination volume per node
- CA volume must be created before it can be used as a mirror destination
- DCreating a mirror relationship also creates the destination volume
How the community answered
(42 responses)- A93% (39)
- B2% (1)
- D5% (2)
Why each option
A DP source volume supports up to 4 mirror destinations, and the destination volume must be pre-created as a DP-type volume before the mirror relationship is established.
Clustered Data ONTAP allows up to 4 SnapMirror DP destination volumes per source volume, enabling fan-out replication to multiple destinations for redundancy or load distribution.
The constraint on DP mirror destinations is up to 4 total per source volume, not a limit of 1 per node - node placement does not define the per-source destination count.
The destination volume must be explicitly created with the DP volume type before creating the SnapMirror relationship; the relationship creation command does not automatically provision the destination.
Creating a SnapMirror relationship does not automatically create the destination volume; the administrator must manually pre-create it with the correct type and capacity before initializing the relationship.
Concept tested: SnapMirror DP fan-out limits and destination pre-creation
Source: https://docs.netapp.com/us-en/ontap/data-protection/create-replication-relationship-task.html
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