Drive-Through Pallet Racking is a good solution if storage capacity is a prime requirement for your warehouse. Similar to Drive-In except you have access from both sides and can drive through the system.
How the shelving is laid out
Eliminating aisles and lanes produces a higher storage density at the expense of selectivity. The first pallet into a lane will be the last out. However, in many applications pallets are received and despatched in batches so this is not a disadvantage. Each pallet is supported so damage from crushing is eliminated.
Speed of operation is good with the use of standard forklift trucks driving into the lanes to pick and place pallets. Speed can be further increased by the provision of lead-in rails and guidance rails within the lanes.