A storage system with a shelf unit having shelves arranged on top of each other, wherein each shelf is logically subdivided in compartments arranged side by side. A unique address is assigned to each compartment. A sensor system detects an occupancy of the compartments by spatially scanning to generate an occupancy information which indicates a degree of occupancy of the respective compartment. A data bus is connected to the sensor system and a communication device, wherein the storage system is configured to perform the following steps:detecting an occupancy information of at least one compartment by the sensor system,transmitting the occupancy information having the address assigned to the compartment, from which the occupancy information has been measured, from the sensor system to the communication device via the data bus, andestablishing a network connection by the communication device to transmit occupancy information to a server or control information to the storage system in a unidirectional or bidirectional communication.展开▼