It is because the volume is a fabricpool volume, 90% of the user data is tiered to object-store/cold tier. Data in object-store will not occupy aggregate space, thus moving fabricpool volume from one ...It is because the volume is a fabricpool volume, 90% of the user data is tiered to object-store/cold tier. Data in object-store will not occupy aggregate space, thus moving fabricpool volume from one aggregate to other will not reclaim all the space but only reclaim space which is in performance tier/local tier. If the volume used size is 2.28TB, out of which 2.15TB is in cold tier/object-store. If vol move is performed, aggregate will only reclaim 130GB of space not whole 2.28TB.