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DYNAMIC HIGHER-LEVEL REDUNDANCY MODE MANAGEMENT WITH INDEPENDENT SILICON ELEMENTS

  • US 20130246839A1
  • Filed: 11/30/2011
  • Published: 09/19/2013
  • Est. Priority Date: 12/01/2010
  • Status: Active Grant
First Claim
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1. A system comprising:

  • means for computing k redundant data portions to protect n-k useful data portions;

    means for storing each of the k redundant data portions and each of the n-k useful data portions in separate corresponding areas, each of the corresponding areas in a respective one of n physical devices;

    means for, subsequent to a failure such that one of the corresponding areas is no longer usable, computing j redundant data portions to protect n-1-j useful data portions; and

    wherein j<

    =k.

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