Which feature enables simultaneous snapshots of multiple LUNs In different volumes?

A consistency group (CG) is a feature in ONTAP that groups multiple volumes together to be managed as a single entity for data protection purposes. When a snapshot is created of a consistency group, ONTAP creates a crash-consistent or application-consistent snapshot of all member volumes simultaneously. This is essential for applications that stripe data, logs, and other components across multiple LUNs residing in different volumes, ensuring that the recovery point is consistent across all related data.

A. Single File SnapRestore: This is a recovery feature used to restore individual files or LUNs from an existing snapshot, not a feature for creating snapshots.

B. Failover groups: This term is not a standard ONTAP feature for creating snapshots. It is more generally associated with high-availability or disaster recovery configurations.

D. SyncMirror: This is a high-availability feature that provides synchronous, real-time mirroring of data within an aggregate (plexes). It ensures data redundancy, not coordinated point-in-time snapshots across volumes.

1. NetApp ONTAP 9 Documentation

"Data protection overview": "A consistency group (CG) is a group of volumes that you manage as a single unit to ensure that the data on all volumes is consistent. You can create crash-consistent or application-consistent Snapshot copies of all volumes in the group." (Found in the section describing consistency groups).

2. NetApp Technical Report TR-4681

"SnapMirror Configuration and Best Practices Guide for ONTAP 9.5 and Later": Section 3.1

"Consistency Groups

" states

"A consistency group (CG) is a collection of volumes that are treated as a single unit when a Snapshot copy is created... This is useful for applications that write to multiple volumes and require write-order consistency between the volumes."

3. NetApp ONTAP 9 Documentation

"ONTAP concepts": The "SnapMirror technology" section describes SyncMirror as a feature for aggregate-level data mirroring for business continuity

distinguishing it from the snapshot coordination function of consistency groups. The "SnapRestore technology" section defines it as a data recovery tool.