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Apparatus, system, and method for data storage using progressive raid

  • US 8,412,979 B2
  • Filed: 07/13/2011
  • Issued: 04/02/2013
  • Est. Priority Date: 12/06/2006
  • Status: Expired due to Fees
First Claim
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1. A method for reliable, high performance storage of data, the method comprising:

  • calculating a stripe pattern for data to be stored and writing N data segments to N storage devices within a set of storage devices, wherein each of the N data segments is written to a separate storage device;

    writing the N data segments of the stripe to a parity-mirror storage device within the set of storage devices, the parity-mirror storage device being in addition to the N storage devices; and

    recovering a data segment stored on an unavailable storage device of the N storage devices in response to a request to read the data segment, the data segment recovered from a corresponding data segment stored on the parity-mirror storage device prior to a parity progression module generating one or more parity data segments for the stripe and storing the one or more parity data segments on the parity-mirror storage device.

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