A warehousing system for storing and retrieving goods disposed in containers, the system comprising: a multilevel storage array, each level of which has a transport area and a storage area (501, 502, 503), the storage area including an array of storage shelves configured to hold containers thereon and the transport area being substantially continuous and arranged to communicably connect the storage shelves to each other; at least one substantially continuous lift that transports containers to and from at least one level of the multilevel storage array; at least one transport vehicle located on the at least one level and configured to traverse the transport area transporting containers between the at least one continuous lift and container storage locations on the storage shelves so that the at least one continuous lift communicates non-deterministically, via the transport vehicle, with container storage locations of each of the storage shelves on the at least one level; an infeed transport system communicably linked to the at least one continuous lift for entering product containers, holding stock goods, on the storage shelves; and an order fulfillment station (24, 24A, 24B) arranged for generating, from the stock goods in the product containers on the storage shelves, order containers corresponding to a customer order and holding order goods, designated by the customer order, characterized in that the order fulfillment station (24, 24A, 24B) is communicably connected to the multilevel storage array via the at least one continuous lift so that order containers from the fulfillment station are entered onto the storage shelves of the multilevel storage array. a multilevel storage array, each level of which has a transport area and a storage area (501, 502, 503), the storage area including an array of storage shelves configured to hold containers thereon and the transport area being substantially continuous and arranged to communicably connect the storage shelves to each other; at least one substantially continuous lift that transports containers to and from at least one level of the multilevel storage array; at least one transport vehicle located on the at least one level and configured to traverse the transport area transporting containers between the at least one continuous lift and container storage locations on the storage shelves so that the at least one continuous lift communicates non-deterministically, via the transport vehicle, with container storage locations of each of the storage shelves on the at least one level; an infeed transport system communicably linked to the at least one continuous lift for entering product containers, holding stock goods, on the storage shelves; and an order fulfillment station (24, 24A, 24B) arranged for generating, from the stock goods in the product containers on the storage shelves, order containers corresponding to a customer order and holding order goods, designated by the customer order, characterized in that the order fulfillment station (24, 24A, 24B) is communicably connected to the multilevel storage array via the at least one continuous lift so that order containers from the fulfillment station are entered onto the storage shelves of the multilevel storage array.