Patents Examined by Nano Padmanabhan
  • Apparatus and method of cascading backup logical volume mirrors
    Patent number: 6820180
    Abstract: A method, system and apparatus for cascading backup mirrors are provided. A mirroring map is created. The mirroring map includes at least three mirrors. A first mirror of the three mirrors is set to synchronize to a second mirror and a third mirror is set to synchronize to the first mirror. The first and the third mirror are backup mirrors and the second mirror is a working mirror. One of the backup mirrors is located remotely and the other locally.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: November 16, 2004
    Assignee: International Business Machines Corporation
    Inventors: Gerald Francis McBrearty, Shawn Patrick Mullen, Johnny Meng-Han Shieh