Patents by Inventor Leslie E. Kuczynski

Leslie E. Kuczynski 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).

  • Hardware and software failover services for a file server
    Patent number: 6625750
    Abstract: A file server includes a plurality of stream server computers linking data storage to a data network, and at least two controller servers for controlling the stream server computers. The controller servers are programmed so that at a given time one of the controller servers is active in controlling the stream server computers, and another of the controller servers is inactive. The inactive controller server is programmed to respond automatically to a failure of the active controller server by becoming active. For example, each of the controller servers has a respective flag for indicating whether or not the controller server is active. Each controller server is programmed so that, upon booting, it will read the flag of the other stream server, and if the flag of the other controller server indicates that the other controller server is active, then the controller server becomes inactive. Otherwise, the stream server assumes an active or inactive state based on a predetermined arbitration method.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: September 23, 2003
    Assignee: EMC Corporation
    Inventors: Wayne W. Duso, Leslie E. Kuczynski, John Forecast, Uday Gupta, Uresh K Vahalia, Dennis P. J. Ting