Patents by Inventor Alan Lawson Rowe

Alan Lawson Rowe 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).

  • Apparatus and method for data replication at an intermediate node
    Patent number: 7631021
    Abstract: An embodiment of the invention provides an apparatus that includes a primary node, a secondary node, and an intermediate node. Data is synchronously copied from the primary node to the intermediate node, and data is asynchronously copied from the intermediate node to the secondary node. The data stored in the intermediate node is a subset of the data set that is stored in the primary node. Therefore, an embodiment of the invention advantageously provides a multiple hop data replication method that allows data recovery if disaster occurs at the location of the primary node. Additionally, an embodiment of the invention advantageously provides a tolerable latency value from the time that a client device sends a write request to the primary node to the time that an acknowledgement message is received by the client device.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: December 8, 2009
    Assignee: Netapp, Inc.
    Inventors: Joydeep Sarma, Michael Federwisch, Steven Watanabe, Alan Lawson Rowe