Dear Sam L.
Now I understand better the process and add luns in pairs of 2, but when I try Add Lun, show the message (see attached image).
I tried another times add Luns but all times show this message.
“An add controllers or add luns or expand luns process is already running in the background.”
I already refresh the NAS manager and log out / log in, but the message show again.
Best Regards.