glennbrown

Stop the array.
Add a pool, add the NVMe drive to that pool.
Start the array
In the appdata share settings change the following:
"Use cache pool (for new files/directories):"  - Set this to Prefer
"Select Cache Pool:" - Set this to name of the pool you created.
Do the above for the "system" share too
 
You will want to stop Docker then execute mover, that should move all data to the pool.