In a conventional warehouse, the movements in the x and y directions (vertical and horizontal movement) within a storage aisle are carried out by a storage and retrieval machine. In an S.-L., the movements are solved in different ways: vertically by lifting stations or elevators, horizontally by shuttles in the storage levels. Shuttles can be arranged on each level, or individual shuttles can be brought to the required storage levels via vertical conveyors. S.-L. are available on the market for containers and pallets.

Source: logipedia / Fraunhofer IML