So, I might be misunderstanding what you are attempting to do but from what it sounds like, I was under the impression I had done this exact thing (except 4,3,1 if you will). In drivepool, I selected the desired folders to be duplicated 4 times under file protection. Then under Balancing > File Placement I selected those folders to be placed on 3 local drives and 1 cloud drive by selecting the drives in the "file placement options" section. Now I was under the impression that this would result in one copy of the folders being placed on each of the four designated drives. After balancing, when I look at the folders it shows them being duplicated across the four drives (4,3,1) but from reading your question and the subsequent responses am I to understand that the 4 copies of the folder are not duplicated across the 4 drives? Or was it that you were attempting to specifically use a balancer to accomplish this?