Patent ID: 9703504
Date: 2017-07-11
CPC Classifications: G06F

Claim:
1. A storage system comprising: a plurality of storing devices configured to store data; a cache memory configured to hold data; an access control unit configured to access any one of the plurality of storing devices when a read access request for reading of first target data is made from an information processing terminal, to hold the first target data read from the any one of the plurality of storing devices in the cache memory, to return the first target data to the information processing terminal, and to select a storing device which has not stored the first target data among the plurality of storing devices; and a writing unit configured to write the first target data held in the cache memory in the selected storing device to create a replica of the first target data acquired using a timing of the read access request, the access control unit accesses any one of the plurality of storing devices when a write access request for writing of second target data is made from the information processing terminal and stores the second target data in the cache memory, and the writing unit writes the second target data stored in the cache memory in a storing device which has not stored the second target data among the plurality of storing devices.