Patents by Inventor David Wayne DesRoches

David Wayne DesRoches has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mailbox for controlling storage subsystem reconfigurations
    Patent number: 6601133
    Abstract: A method balances workloads of storage devices of a storage subsystem. The method includes reading a mailbox to obtain control parameters and collecting historical data on numbers of accesses to storage volumes of the storage devices. The control parameters are written in the mailbox by host devices. The method also includes selecting data swaps that lead to better balanced workloads for storage devices based on the historical data. The act of selecting and/or the act of collecting being initialized by the control parameters.
    Type: Grant
    Filed: August 1, 2002
    Date of Patent: July 29, 2003
    Assignee: EMC Corporation
    Inventors: Avinoam Zakai, David Wayne DesRoches, Victoria Dubrovsky, Shai Bar-Nefy, Ruben Michel
  • Mailbox for controlling storage subsystem reconfigurations
    Publication number: 20030005243
    Abstract: A method balances workloads of storage devices of a storage subsystem. The method includes reading a mailbox to obtain control parameters and collecting historical data on numbers of accesses to storage volumes of the storage devices. The control parameters are written in the mailbox by host devices. The method also includes selecting data swaps that lead to better balanced workloads for storage devices based on the historical data. The act of selecting and/or the act of collecting being initialized by the control parameters.
    Type: Application
    Filed: August 1, 2002
    Publication date: January 2, 2003
    Inventors: Avinoam Zakai, David Wayne DesRoches, Victoria Dubrovsky, Shai Bar-Nefy, Ruben Michel
  • Mailbox for controlling storage subsystem reconfigurations
    Patent number: 6480930
    Abstract: A method balances workloads of storage devices of a storage subsystem. The method includes reading a mailbox to obtain control parameters and collecting historical data on numbers of accesses to storage volumes of the storage devices. The control parameters are written in the mailbox by host devices. The method also includes selecting data swaps that lead to better balanced workloads for storage devices based on the historical data. The act of selecting and/or the act of collecting being initialized by the control parameters.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: November 12, 2002
    Assignee: EMC Corporation
    Inventors: Avinoam Zakai, David Wayne DesRoches, Victoria Dubrovsky, Shai Bar-Nefy, Ruben Michel
  • Rolling back storage subsystem reconfigurations
    Patent number: 6415372
    Abstract: A method and an apparatus for reconfiguring a storage subsystem by performing an ordered sequence of reconfigurations of physical storage volumes of the storage subsystem. The method and apparatus perform a portion of the sequence of reconfigurations, in response to receiving a rollback request, in an order that is reversed with respect to the order of the sequence.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: July 2, 2002
    Assignee: EMC Coropration
    Inventors: Avinoam Zakai, Shai Bar-Nefy, David Wayne DesRoches, Tao Kai Lam, Ruben Michel