I am curious as to how long does it generally take to defragment a SAN Volume. I know it all depends on the size of the volume and a few other factors but I am not worried about those. My concern is not having the Volume online while it defrags. I am not having any problems with my volume but I just want to see if I gain any space back when it is defragged... So has anyone defragged a Volume of 6TB or so? If so how long did it take?