×

Transformational raid for hierarchical storage management system

  • US 5,960,169 A
  • Filed: 02/27/1997
  • Issued: 09/28/1999
  • Est. Priority Date: 02/27/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for converting a first memory structure stored on a plurality of data storage devices to a second memory structure stored on said plurality of data storage devices, the method comprising the steps of:

  • (a) identifying a set of blocks of data to be converted, each block of said set being stored on a different respective one of said plurality of data storage devices, said set comprising a plurality of pairs of blocks, both blocks of each respective pair containing identical data;

    (b) selecting a first block of said set;

    (c) designating the first block as a parity block without altering data contained in said first block;

    (d) selecting a respective block from each pair of blocks of said set which does not include said first block; and

    (e) designating each respective block selected from each pair of blocks of said set which does not include said first block as available for storage of replacement data.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×