Patents by Inventor Ellen F. Jones

Ellen F. Jones 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).

  • Quick recovery of write cache in a fault tolerant I/O system
    Patent number: 5724501
    Abstract: A method for recovering data from a cache memory of a second storage controller by access to a cache memory of a first storage controller is presented. The storage controllers are coupled by a private common data path. The method includes copying metadata corresponding to the data stored in the cache memory of the second storage controller to the cache memory of the first storage controller through the private common data path. The metadata may include pointers to and the size of the data. After copying the metadata pointers, the data in the cache memory of the second storage controller is established in the cache memory of the first storage controller. As a result, the entire set of data does not need to be totally recovered to the hard disk before resuming host communications in a recovery operation, which may take a relatively long time.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: March 3, 1998
    Assignee: EMC Corporation
    Inventors: Matthew C. Dewey, Ellen F. Jones