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Information processing system

  • US 9,811,277 B2
  • Filed: 02/23/2017
  • Issued: 11/07/2017
  • Est. Priority Date: 03/18/2013
  • Status: Active Grant
First Claim
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1. An information processing device connectable to a first storage unit, a second storage unit and a data migration log area, the first storage unit including a readable and writable first memory, the second storage unit including a readable and writable second memory, the information processing device comprising a control unit configured to execute:

  • first processing for determining a storage status of the first storage unit based on reliability information acquired from the first storage unit;

    second processing for, when the storage status of the first storage unit is recognized as a protected state by the first processing, executing write on only the second storage unit of the first and second storage units, executing read on one of the first and second storage units based on an address recorded in the data migration log area;

    third processing for recording an address of data written in the second storage unit in the data migration log area according to the write by the second processing; and

    fourth processing for, when the storage status of the first storage unit is not recognized as the protected state by the first processing, executing read data from the first storage unit without reading from the data migration log area.

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