Operating method of memory device, computing system and operating method thereof

An operating method of a memory device, a computing system and an operating method thereof are provided. The memory device communicates with a first storage device and a second storage device through an interface circuit. The method includes: receiving a first request including a command and a first logical block address from a host device; obtaining a first physical block address by referring to first mapping data dedicated to the first storage device based on the first logical block address; and transmitting a second request including the first physical block address and the command to the first storage device through the interface circuit. 提供存储器装置的操作方法、计算系统及其操作方法。所述存储器装置通过接口电路与第一存储装置和第二存储装置通信。所述方法包括：从主机装置接收包括命令和第一逻辑块地址的第一请求；基于第一逻辑块地址，参考专用于第一存储装置的第一映射数据来获得第一物理块地址；以及通过接口电路将包括第一物理块地址和所述命令的第二请求发送到第一存储装置。