Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
July 9, 2013
Patent Application Number
12664721
Date Filed
August 31, 2009
Patent Citations Received
...
Patent Primary Examiner
Patent abstract
The storage system comprises a plurality of flash packages configuring one or more RAID groups, and a controller coupled to the plurality of flash packages. Each flash package comprises a plurality of flash chips configured from a plurality of physical blocks. The controller identifies a target area related to an unnecessary area, unmaps a physical block allocated to a logical block belonging to this target area from this logical block, and manages the unmapped physical block as a free block.
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