On controller 2:
Create a new aggregate of 13 SATA disks, and keep one as hot spare.
Copy the root volume from the small SAS aggregate to the newly created SATA aggregate.
vol restrict newroot
vol copy start -S root newroot
vol online newroot
vol options newroot root #
aggr options root is from maintenance mode...when done here the
aggregate containing newroot will become root since it has the root volume.
vol status #
confirm newroot is "diskroot"
Destroy the SAS aggr.
Unown the SAS disks.
On controller 1:
Assign the old Controller 2 SAS disks to controller1
Add the SAS disks to the SAS aggregate.
Hope this helps.