RAID storage device and method of management thereof
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United States of America Patent
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May 7, 2019
Grant Date -
Nov 9, 2017
app pub date -
Feb 17, 2017
filing date -
May 3, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A method of managing a plurality of storage devices controlled in a RAID scheme includes detecting a failure disk among the storage devices, selecting one of a plurality of stripes of the storage devices according to a result of the detection, identifying a valid page of data included in a normal chunk of the selected stripe and a valid page of data of a lost chunk mapped to the failure disk with reference to address mapping information, recovering the valid page of the lost chunk among chunks included in the selected stripe with reference to information on the identified valid page, and copying the recovered valid page of the lost chunk and the valid page of the normal chunk to a new stripe of the storage devices.
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