Method and controller for processing data multiplication in RAID system
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United States of America Patent
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Mar 14, 2017
Grant Date -
Sep 18, 2014
app pub date -
May 30, 2014
filing date -
Sep 2, 2005
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Abstract
The invention discloses a method and controller for processing data multiplication in a RAID system. Map tables are generated for all values in a field, respectively. The length of an XOR operation unit is chosen to be appropriate w bits (e.g., 32 bits or 64 bits). One or several XOR operation units form a multiplication unit of a data sector. When computing on-line, data in a disk drive of a disk array are performed with XOR operations in accordance with one of the map tables using an XOR operation unit as one unit while computing on the multiplication unit to obtain a product of multiplication.
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