Patents by Inventor Miguel Duanas

Miguel Duanas 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).

  • Apparatus and method to control access to logical volumes
    Patent number: 7512735
    Abstract: A method to control access to logical volumes. The method provides a plurality of host computers and an information storage and retrieval system comprising a plurality of logical volumes. The method forms (N) host computer groups, assigns one or more of the host computers to the (i)th host computer group, such that each host computer assigned to (i)th host computer group is not assigned to any other of the (N) host computer groups. The method forms (N) logical volume groups, assigns one or more logical volumes to the (i)th logical volume group, such that each of the logical volumes assigned to the (i)th logical volume group is not assigned to any other of the (N) logical volume groups. The method maintains a database associating the (i)th host computer group with the (i)th logical volume group, and permits a host computer assigned to the (i)th host computer group to access a logical volume assigned to the (i)th logical volume group.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: March 31, 2009
    Assignee: International Business Machines Corporation
    Inventors: Ezequiel Cervantes, Juan A. Coronado, Miguel A. Duanas, David P. Goodman, Matthew J. Kalos, Donald M. Nordahl, Richard A. Ripberger
  • Apparatus and method to control access to logical volumes
    Publication number: 20050114624
    Abstract: A method to control access to logical volumes. The method provides a plurality of host computers and an information storage and retrieval system comprising a plurality of logical volumes. The method forms (N) host computer groups, assigns one or more of the host computers to the (i)th host computer group, such that each host computer assigned to (i)th host computer group is not assigned to any other of the (N) host computer groups. The method forms (N) logical volume groups, assigns one or more logical volumes to the (i)th logical volume group, such that each of the logical volumes assigned to the (i)th logical volume group is not assigned to any other of the (N) logical volume groups. The method maintains a database associating the (i)th host computer group with the (i)th logical volume group, and permits a host computer assigned to the (i)th host computer group to access a logical volume assigned to the (i)th logical volume group.
    Type: Application
    Filed: November 20, 2003
    Publication date: May 26, 2005
    Inventors: Ezequiel Cervantes, Juan Coronado, Miguel Duanas, David Goodman, Matthew Kalos, Donald Nordahl, Richard Ripberger