The scenario involves creating a test copy of a LUN located on a SnapMirror destination volume. By design, SnapMirror destination volumes are read-only to maintain data integrity. The volume clone create command is the correct tool for this task. It creates a writable, space-efficient FlexClone of the entire read-only volume from a Snapshot. This new cloned volume contains the required LUN, which can then be brought online and used by the new application for testing without impacting the SnapMirror relationship or the source data. This is a standard NetApp procedure for disaster recovery testing and development/test use cases.

A. volume file clone create creates a clone of a single file (or LUN) within the same volume. This command would fail because the SnapMirror destination volume is read-only.

B. lun move start is a command used for migrating a LUN to a new location, not for creating a test copy or clone.

D. volume move start is a command used for migrating an entire volume to a different aggregate, not for creating a clone for testing.

1. NetApp ONTAP 9 Documentation

Data protection guide

"Create a FlexClone volume for DR testing": "You can create a FlexClone volume of a SnapMirror destination volume to test the integrity of the mirrored data without breaking the SnapMirror relationship. The FlexClone volume is a writable

point-in-time copy of the destination volume." This directly supports using volume clone create for the specified use case.

2. NetApp Technical Report TR-4015

"SnapMirror Configuration and Best Practices Guide for ONTAP": Section 5.3

"Disaster Recovery Testing with FlexClone

" describes the process: "The best way to perform a DR test is to use NetApp FlexClone technology. A FlexClone license enables an administrator to create a writable

virtual copy of a DR volume without breaking the SnapMirror relationship." This confirms that cloning the volume is the best practice.

3. NetApp ONTAP 9 Documentation

Logical storage management guide

"What FlexClone files and LUNs are": "A FlexClone file or a FlexClone LUN is a writable

point-in-time copy of a parent file or LUN in the same volume." This reference clarifies why volume file clone create is incorrect

as it cannot write the new clone file into the read-only destination volume.