Information processing device

An information processing device serving as a PCIe system,

• the information processing device comprising:
• a host device including a root complex;
• and
• a plurality of memory devices respectively corresponding to end points, wherein
• one of the plurality of memory devices is defined as a master memory, the other memory devices are defined as slave memories, and are logically coupled to the master memory, and the plurality of memory devices constitute a single virtual storage,
• when accessing is performed from the root complex to the plurality of memory devices constituting the single virtual storage, the root complex hands over a bus master to the master memory, and
• the master memory receives a command regarding the accessing from the root complex, changes address information used for the accessing in the command regarding the accessing, based on a logical relationship with the slave memories, and sends changed command regarding the accessing to a part or all of the slave memories.