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Virtual disk drive system and method

  • US 8,560,880 B2
  • Filed: 06/29/2011
  • Issued: 10/15/2013
  • Est. Priority Date: 08/14/2003
  • Status: Active Grant
First Claim
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1. A method of data progression in a disk drive system, comprising the steps of:

  • determining a cost of operating for each of a plurality of data storage devices;

    classifying each of the plurality of data storage devices based on the cost;

    defining a default size for data storage blocks;

    checking data storage blocks of the defined default size on the data storage devices to determine whether a given storage block comprises data to be moved from a data storage device of a first classification to a data storage device of a second classification; and

    moving the data stored at the given storage block on the data storage device of the first classification to the data storage device of the second classification.

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