... end of the bay. Because a drive-in racking system has only one entrance, it uses what is called a ... LIFO (last in, first out) storage method. With only one entrance, the last pallet put ... storage method. With a FIFO system, pallets are loaded in one end and are pushed back to the other end, ... the aisle;5). First-in-last-out access process, one side in/out or two side in/out can be met.6 ...