| 摘要 |
PROBLEM TO BE SOLVED: To provide a data fetching technique to further accelerate read-out operation in response to a read-out command received from a host.SOLUTION: A method of fetching data in a data storage unit including a first memory and a second memory whose memory capacity is less than the first memory includes receiving a read-out command from the outside of the data storage unit (the read-out command includes an address of data read out from the data storage unit), determining that conditions for fetching additional data are satisfied, and fetching the data requested by the read-out command and the additional data from the first memory and storing at least the additional data in the second memory. |
