This document contains all the steps for your question, using 'SnapMirror commands', it needs some patience to read and its important.
7-Mode Data Transition UsingSnapMirror® Technology:
https://library.netapp.com/ecm/ecm_download_file/ECMLP2494078
Recommendation from NetApp: You should use the 7-Mode Transition Tool for copy-based transition totransition 7-Mode volumes because the tool provides prechecks to verify both 7-Mode and thecluster in every step of the migration process, which helps you to avoid many potential issues. The tool significantly simplifies the migration of all protocols, network, and services configurationsalong with the data migration.
Please note: This is for Migration/Transition purpose only.