Problem

Currently, storage nodes don't delete assets no longer assigned to them in the runtime. And hence dead assets keep on accumulating on the nodes. This means that disk usage of the nodes would continue to grow unless operators manually clean up the space which is very risky.
Other complications of not pruning assets are that DataObjects/Bags can't be effectively moved b/w different buckets/operators, as this action does not physically free up the space, so Storage Lead can't use the Globally available disk space effectively.