Patents by Inventor Furong Cui

Furong Cui 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).

  • Non-disruptive migration of NVMe-of attached virtual volumes using log-based signaling and confirmation for cutover
    Patent number: 11880580
    Abstract: A virtual volume (vVol) is non-disruptively migrated from a first data storage appliance (DSS) to a second DSS. In a synchronizing phase, data is copied from a source vVol to a destination vVol which is not mapped and to which a host computer has no path. Upon completion of synchronization, (1) a mapping is created to the destination vVol for the host and signaled to the host by sending a notification having an associated log page, (2) it is determined whether the host has retrieved the log page, (3) in response the host retrieving the log page, a cutover is performed making the destination vVol accessible to the host and the source vVol inaccessible to the host, and (4) in response to the host not retrieving the log page, the cutover is not performed, leaving the destination vVol inaccessible to the host computer (migration may be aborted or retried).
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: January 23, 2024
    Assignee: Dell Products L.P.
    Inventors: Marina Shem Tov, Sathya Krishna Murthy, Furong Cui
  • NON-DISRUPTIVE MIGRATION OF NVME-OF ATTACHED VIRTUAL VOLUMES USING LOG-BASED SIGNALING AND CONFIRMATION FOR CUTOVER
    Publication number: 20240020042
    Abstract: A virtual volume (vVol) is non-disruptively migrated from a first data storage appliance (DSS) to a second DSS. In a synchronizing phase, data is copied from a source vVol to a destination vVol which is not mapped and to which a host computer has no path. Upon completion of synchronization, (1) a mapping is created to the destination vVol for the host and signaled to the host by sending a notification having an associated log page, (2) it is determined whether the host has retrieved the log page, (3) in response the host retrieving the log page, a cutover is performed making the destination vVol accessible to the host and the source vVol inaccessible to the host, and (4) in response to the host not retrieving the log page, the cutover is not performed, leaving the destination vVol inaccessible to the host computer (migration may be aborted or retried).
    Type: Application
    Filed: July 15, 2022
    Publication date: January 18, 2024
    Inventors: Marina Shem Tov, Sathya Krishna Murthy, Furong Cui