Which is the correct sequence of Non-Disruptive Volume Movement phases?

Which is the correct sequence of Non-Disruptive Volume Movement phases?

• A. Setup Phase, Mirror Phase, Cutover Phase
• B. Initialization phase, Copy Phase, Migrate Phase
• C. Begin Phase, Move Phase, Complete Phase
• D. Setup Phase, Data Copy Phase, Cutover Phase

Answer: (D)

Non-disruptive volume movement uses a three-stage flow: you first set things up, then copy the data, and finally cut over to the new location. In the Setup Phase, the NDVM relationship is established between the source and destination volumes, prerequisites are validated, paths and permissions are verified, and the system is prepared for data movement without touching client I/O. Next comes the Data Copy Phase, where all data is copied from the source to the destination in the background while I/O continues against the source, keeping the volume available to users during the move. Once the destination is fully synchronized and validated, the Cutover Phase switches production I/O to the destination, making it the active volume and allowing the old source to be repurposed or decommissioned as needed. This sequence—Setup, Data Copy, Cutover—best reflects how NDVM achieves non-disruptive movement.

Non-disruptive volume movement uses a three-stage flow: you first set things up, then copy the data, and finally cut over to the new location. In the Setup Phase, the NDVM relationship is established between the source and destination volumes, prerequisites are validated, paths and permissions are verified, and the system is prepared for data movement without touching client I/O. Next comes the Data Copy Phase, where all data is copied from the source to the destination in the background while I/O continues against the source, keeping the volume available to users during the move. Once the destination is fully synchronized and validated, the Cutover Phase switches production I/O to the destination, making it the active volume and allowing the old source to be repurposed or decommissioned as needed. This sequence—Setup, Data Copy, Cutover—best reflects how NDVM achieves non-disruptive movement.