Data storage device and data management method in data storage device
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United States of America Patent
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Dec 20, 2011
Grant Date -
Aug 27, 2009
app pub date -
Feb 23, 2009
filing date -
Feb 21, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
In one embodiment, a HDD creates a segment table to associate an address of user data in a flash memory with an LBA in a magnetic disk. The HDD updates the segment table in a DRAM and saves it to the flash memory at a specific timing. The HDD creates journals indicating the update of the segment table and saves it to the flash memory. The latest segment table can be restored using the segment table and the journals in the flash memory.
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