在没有机架系统的情况下将负载单元直接堆叠在块中。提供高密度存储，但限制了单个负载的访问，并且堆叠高度受所存储产品的可压碎性和稳定性的限制（除非使用了托盘转换器）。先进先出。通常用于有限数量的产品线的高周转率。

         Direct stacking of load units in blocks without a rack system. Offers high density storage but restricts access to individual loads, and stacking height is limited by the crushability and stability of the product being stored (unless pallet converters are used). First In Last Out. Usually used for high turnover of limited number of product lines.