Patents by Inventor John Gifford Logan

John Gifford Logan 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).

  • Control I/O offload in a split-path storage virtualization system
    Patent number: 8250267
    Abstract: Various embodiments of systems, methods, computer systems and computer software are disclosed for implementing a control I/O offload feature in a split-path storage virtualization system. One embodiment is a method for providing split-path storage services to a plurality of hosts via a storage area network.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: August 21, 2012
    Assignee: Netapp, Inc.
    Inventor: John Gifford Logan
  • Switch assisted frame aliasing for storage virtualization
    Patent number: 7856013
    Abstract: An apparatus and process for relabelling and redirecting at least some of the read transaction data frames and the write transaction write data and transfer ready frames in a network so as to bypass a storage manager and pass directly between the client and a storage device via a switch. This eliminates the storage manager as a bottleneck. Some embodiments redirect every read and write transaction, and others redirect only large transactions, or only ones not stored in cache or when latency gets too high. Redirection is accomplished by transmission from the storage manager to a switch redirection commands that contain old and new address data. When a frame to be redirected comes in, its address is compared to the old address data. If there is a match, the new address data is substituted and the frame is passed to a conventional routing process to be routed so as to bypass the storage manager.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: December 21, 2010
    Assignee: Broadcom Corporation
    Inventors: Lani William Brewer, John Gifford Logan
  • CONTROL I/O OFFLOAD IN A SPLIT-PATH STORAGE VIRTUALIZATION SYSTEM
    Publication number: 20100115208
    Abstract: Various embodiments of systems, methods, computer systems and computer software are disclosed for implementing a control I/O offload feature in a split-path storage virtualization system. One embodiment is a method for providing split-path storage services to a plurality of hosts via a storage area network.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 6, 2010
    Inventor: John Gifford Logan
  • Switch assisted frame aliasing for storage virtualization
    Patent number: 7116666
    Abstract: An apparatus and process for relabelling and redirecting at least some of the read transaction data frames and the write transaction write data and transfer ready frames in a network so as to bypass a storage manager and pass directly between the client and a storage device via a switch. This eliminates the storage manager as a bottleneck. Some embodiments redirect every read and write transaction, and others redirect only large transactions, or only ones not stored in cache or when latency gets too high. Redirection is accomplished by transmission from the storage manager to a switch redirection commands that contain old and new address data. When a frame to be redirected comes in, its address is compared to the old address data. If there is a match, the new address data is substituted and the frame is passed to a conventional routing process to be routed so as to bypass the storage manager.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: October 3, 2006
    Assignee: Broadcom Corporation
    Inventors: Lani William Brewer, John Gifford Logan
  • Switch assisted frame aliasing for storage virtualization
    Patent number: 6876656
    Abstract: An apparatus and process for relabelling and redirecting at least some of the read transaction data frames and the write transaction write data and transfer ready frames in a network so as to bypass a storage manager and pass directly between the client and a storage device via a switch. This eliminates the storage manager as a bottleneck. Some embodiments redirect every read and write transaction, and others redirect only large transactions, or only ones not stored in cache or when latency gets too high. Redirection is accomplished by transmission from the storage manager to a switch redirection commands that contain old and new address data. When a frame to be redirected comes in, its address is compared to the old address data. If there is a match, the new address data is substituted and the frame is passed to a conventional routing process to be routed so as to bypass the storage manager.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: April 5, 2005
    Assignee: Broadcom Corporation
    Inventors: Lani William Brewer, John Gifford Logan
  • Switch assisted frame aliasing for storage virtualization
    Publication number: 20030002503
    Abstract: An apparatus and process for relabelling and redirecting at least some of the read transaction data frames and the write transaction write data and transfer ready frames in a network so as to bypass a storage manager and pass directly between the client and a storage device via a switch. This eliminates the storage manager as a bottleneck. Some embodiments redirect every read and write transaction, and others redirect only large transactions, or only ones not stored in cache or when latency gets too high. Redirection is accomplished by transmission from the storage manager to a switch redirection commands that contain old and new address data. When a frame to be redirected comes in, its address is compared to the old address data. If there is a match, the new address data is substituted and the frame is passed to a conventional routing process to be routed so as to bypass the storage manager.
    Type: Application
    Filed: June 15, 2001
    Publication date: January 2, 2003
    Inventors: Lani William Brewer, John Gifford Logan