Patents by Inventor Douglas R. Phillips

Douglas R. Phillips 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).

  • System for migrating virtual tape volumes between filesystems
    Patent number: 10852981
    Abstract: A virtual tape engine migrates a virtual tape volume between filesystems. A source virtual tape volume is copied into the virtual tape engine, and a target virtual tape volume is generated. Data associated with the source virtual tape volume may be modified to generate the target virtual tape volume. For example, compression or encryption state may be modified. Migration may be triggered automatically in accordance with a migration policy. The source virtual tape volume remains accessible during migration.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: December 1, 2020
    Assignee: EMC IP HOLDING COMPANY LLC
    Inventors: Larry W McCloskey, John P Darling, Douglas R Phillips, Innokentiy Aristov
  • SYSTEM FOR MIGRATING VIRTUAL TAPE VOLUMES BETWEEN FILESYSTEMS
    Publication number: 20190339896
    Abstract: A virtual tape engine migrates a virtual tape volume between filesystems. A source virtual tape volume is copied into the virtual tape engine, and a target virtual tape volume is generated. Data associated with the source virtual tape volume may be modified to generate the target virtual tape volume. For example, compression or encryption state may be modified. Migration may be triggered automatically in accordance with a migration policy. The source virtual tape volume remains accessible during migration.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 7, 2019
    Applicant: EMC IP HOLDING COMPANY LLC
    Inventors: Larry W. McCloskey, John P. Darling, Douglas R Phillips, Innokentiy Aristov
  • Sharing virtual tape volumes between separate virtual tape libraries
    Patent number: 9733871
    Abstract: In an embodiment, a method includes, responsive to a user request for a virtual tape from a first library operatively coupled to a first plurality of virtual tape storage devices sent to a second library operatively coupled to a second plurality of virtual tape storage devices, copying a virtual tape from the second plurality of virtual tape storage devices of the second library to the first plurality of virtual tape storage devices of the first library.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: August 15, 2017
    Assignee: EMC IP Holding Company LLC
    Inventors: William C. Burgoyne, Bruce F. Offhaus, Larry W. McCloskey, Douglas R. Phillips, Ralph E. Armstrong
  • Method of guaranteeing replication of data written by a mainframe to a virtual tape
    Patent number: 8793452
    Abstract: Replication requests are initiated in a virtual tape emulation system by storing a replication request in a persistent storage area that is shared between a virtual tape emulator and a control station. When the control station sees a pending replication request it initiates a request to a replication control to replicate the affected file or file system to a backup storage array. The control station deletes the replication request when the replication task completes. Deletion of the replication requests from the shared area is taken by the virtual tape task as a signal that replication has successfully completed, and can be reported to the mainframe.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 29, 2014
    Assignee: EMC Corporation
    Inventors: Larry W. McCloskey, Karyn M. Kelley, Douglas R. Phillips