Apparatus, system, and method for reconfiguring an array to operate with less storage elements
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United States of America Patent
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Nov 6, 2012
Grant Date -
Nov 18, 2010
app pub date -
May 18, 2009
filing date -
May 18, 2009
priority date (Note) -
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Abstract
An apparatus, system, and method are disclosed for reconfiguring an array of solid-state storage elements protected using parity data. The storage element error module determines that one or more storage elements are unavailable to store data (“unavailable storage elements”). The storage element resides in an array with N number of storage elements storing a first ECC chunk and P number of storage elements storing first parity data. The reconfigure data read module reads data from storage elements other than the unavailable storage elements. The data regeneration module uses the first parity data to regenerate missing data from the first ECC chunk. The data reconfiguration module creates a second ECC chunk. The new configuration storage module stores a portion of the second ECC chunk and associated second parity data on (N+P)−Z number of storage elements, wherein 1≦Z≦P.
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