Memory expander, host device, and operation method of server system

The invention provides a memory expander, a host device, and an operation method of a server system. The memory extender includes a memory device having a first memory region corresponding to a first host and a second memory region corresponding to a second host. A controller communicates with a first host and a second host over a compute fast link (CXL) interface. The controller receives a first CXL communication packet from the first host, and performs a target data transfer operation of transferring target data stored in the first memory area to the second memory area in response to the first CXL communication packet. 提供了存储器扩展器、主机装置以及服务器系统的操作方法。所述存储器扩展器包括：存储器装置，具有与第一主机对应的第一存储器区域和与第二主机对应的第二存储器区域。控制器通过计算快速链路(CXL)接口与第一主机和第二主机进行通信。控制器从第一主机接收第一CXL通信分组，并且响应于第一CXL通信分组，执行将存储在第一存储器区域中的目标数据传送到第二存储器区域的目标数据传送操作。