A motorized pallet jack comprises one or more motors that can propel the pallet jack and lift each of the tines. A first slot extends into the base body from a first narrow lateral surface, and a second slot, which is offset vertically from the first slot, extends into the base body from a second narrow lateral surface, in such a way that the two slots define a section of the base body which has substantially the shape of an S or reversed S. In a case where data transfer latencies in a first pair group of the pair groups reach a threshold, the management system selects a first asynchronous remote copy pair from the first pair group with reference to the pair management information. The delivery opening is configured to dispense developer.