| 摘要 |
PROBLEM TO BE SOLVED: To efficiently access a plurality of load-balanced storage devices.SOLUTION: A storage device 102 stores hot data, which is a first data group selected from multiple pieces of data, on the basis of access time of each of data stored in a storage system 100. The storage device 103 stores cold data, which is a second data group different from the hot data. A control device 101 stores BF 113 in which feature quantity formed by extracting features of identification information of the hot data is registered. The control device 101 determines whether a hash value formed by extracting features of identification information of data to be accessed has been registered in BF 113 or not. The control device 101 transmits a request to the storage device 102 or the storage device 103 to access the data on the basis of a determination result. |
