A storage system and methods for operating a storage system are disclosed. The storage system includes a plurality of storage shelves, and each of storage shelves has a shelf plate for supporting a container. Each of the storage shelves is coupled to a chain to enable horizontal movement and each is further coupled to a rail to enable guiding to one or more positions. A motor is coupled to a drive sprocket for moving the chain. The rail has some sections that are linear and some sections that are nonlinear. The sections are arranged in a loop. Example configurations of the storage system include one or more of stationary shelves, extended horizontal tracks for a hoist, a conveyor at a level of the storage system, and a manual loading station. The hoist, with an extended horizontal track interfaces with the manual loading station.