Patent ID: 8037242

Claim:
An information processing system, comprising: an information processing apparatus operable to receive a data send request from an external device and send a target data of the data send request to the external device, the information processing apparatus including a plurality of control devices, each comprising: a storage device configured to store therein the target data of the data send request; a control unit configured to receive the data send request from the external device, read out the target data of the data send request from the storage device to which the control unit is assigned, and send the target data to the external device; and a cache memory configured to temporarily store therein at least a part of the data which the control unit has read from the storage device; and a management device operable to receive the data send request from the external device and assign the control device, in which the target data of the data send request is stored, as a data send request destination of the external device, wherein upon receipt of the data send request from the external device, the control unit makes a determination as to whether the at least a part of the target data of the data send request results in a cache hit in the cache memory, replicates data associated with the target data stored in the storage device to another storage device assigned to another control unit when the determination result indicates the cache hit, and notifies the management device that the associated data has been replicated to the another control device.