This would show aggregates which have been created with ADP disks. When you do a "storage disk show", the disks which are partitioned by ADP will have a "P1" or "P2" appended to the end. You can also use this command to view the partitioned disks:
storage disk show -container-type shared
If this post resolved your issue, please help others by selecting ACCEPT AS SOLUTION or adding a KUDO.