Drive-in : drive-through racking system: perfect for warehouses with homogeneous goods and a large number of pallets per SKU Drive-in racking is the simplest and most affordable high-density storage method. It is comprised of multiple racks with a series of lanes accessed by forklifts to deposit or retrieve pallets. Compared to conventional pallet racking, this solution notably increases storage capacity. These racks can have two configurations: drive-in (pallets are loaded and unloaded from the same working aisle) or drive-through (pallets are loaded through the front aisle and unloaded through the rear aisle).