Patent ID: 7716304

Claim:
An access control system comprising: a first information processing apparatus connected to a first storing unit; and a second information processing apparatus connected to the first storing unit, wherein the first information processing apparatus includes: an access control unit that allocates an access request to either one of a first access not passing through the second information processing apparatus to the first storing unit and a second access passing through the second information processing apparatus to the first storing unit, according to power mode of the second information processing apparatus; a first cache unit that temporarily stores the access request allocated to the second access; and a communication control unit that controls communication with the second information processing apparatus to transmit the access request stored in the first cache unit sequentially to the second information processing apparatus, and the second information processing apparatus includes: a second cache unit that temporarily stores the access request transmitted by the communication control unit; and a control unit that controls access to the first storing unit according to the access request stored in the second cache unit in parallel with receiving new access request from the communication control unit.