Patents by Inventor Laurie E. Friedman

Laurie E. Friedman 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).

  • Distributed fault tolerant digital data storage subsystem for fault tolerant computer system
    Patent number: 5815649
    Abstract: A fault-tolerant computer system comprises a plurality of processing nodes and a plurality of storage nodes interconnected by a network. The processing nodes perform processing operations in connection with user-generated processing requests. The processing nodes, in connection with processing a processing request, generate storage and retrieval requests for transmission to the storage node to enable storage of data thereon and retrieval of data therefrom. The storage nodes store data in at least one replicated partition group comprising a plurality of replicated partitions distributed across the storage nodes. A storage node, on receiving a retrieval request from a processing node provide the requested data to the processing node. In addition, on receiving a storage request from a processing node, a storage node initiates an update operation to update all of the replicated partitions in the replicated partition group.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: September 29, 1998
    Assignee: Stratus Computer, Inc.
    Inventors: David A. Utter, Susan J. Lo Verso, Laurie E. Friedman, Steven Haid, Gregory S. LeBlanc, Paul H. Hansen