Problem:
I added couple drives to the RAID currently i'm using and finish the initiliazation. I can see the added storage in the Unit Manager menue of the Open-E GUI, but not in the Volume Manager, where I create/expand the LV's.
Solution:
IAfter expanding the RAID array you have to grow the Volume Group size from the "PV resize" function under Extended Console Tools (ALT+CTRL+X).
Please note that this step may cuase a restart.