Storage control apparatus and a control method thereof

A storage control apparatus comprises a data I/O control unit which has communication ports adapted to connect with any of information processing apparatuses, is communicatively connected to physical disk drives for storing data, and performs data read/write from/to the drives according to a data I/O request received from the processing apparatus; a first memory storing a data read/written among the data stored in the disk drives; and a second memory storing information on management of storage resources including the communication ports, the physical disk drives, and a storage capacity of the first memory allocated for each user using the processing apparatuses. Upon reception of a request of the information on management from a user, an identifier of the communication port, an identifier of the disk drive, and a storage capacity of the first memory allocated for the user are transmitted to a user interface.