Patents by Inventor Christopher Bulmer

Christopher Bulmer 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 storage volume migration between storage controllers
    Patent number: 11461031
    Abstract: A migration replication relationship for data migration between a migration-source volume on a first storage controller and a migration-target volume on a second storage controller, a volume represents a virtualized device. The method presents the migration-source volume and the migration-target volume as a same volume to a host whilst using differentiated target port descriptors to define different discoverable paths to the each. During data migration, the method allows input/output operations to the migration-source volume by presenting target ports of the first storage controller in an available state and deters input/output operations to the migration-target volume by presenting target ports on the second storage controller in a standby state whilst allowing host discovery of paths to the migration-target volume.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: October 4, 2022
    Assignee: International Business Machines Corporation
    Inventors: Timothy Andrew Moran, Christopher Bulmer, Christopher Canto, Warren Hawkins