DATA STORAGE DEVICE, DATA STORAGE METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM
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United States of America Patent
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app pub date -
Sep 14, 2016
filing date -
Jan 8, 2016
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
According to one embodiment, a data storage device includes: a first hardware storage device; a second hardware storage device in which write is done by an integer multiple size of a predetermined size. The data storage device writes data into the first hardware storage device in response to a write instruction of data having expiration information. The data storage device manages data management information including: the expiration information of data written into the first hardware storage device; and a storage location of the data. The data storage device selects, when a predetermined condition is satisfied, a plurality of pieces of data in the first hardware storage device based on temporal proximity among pieces of the expiration information, reads out the pieces of data from the first hardware storage device, and writes the pieces of data into the second hardware storage device.
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