Patents by Inventor Deepak K. Tawri

Deepak K. Tawri 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).

  • Port identifier management for path failover in cluster environments
    Patent number: 9647933
    Abstract: A method includes assigning a port identifier to a first port on a node and communicating data on a first path between the first port and a logical unit on an active/passive storage array. The port identifier is registered in a persistent reservation scheme for the logical unit. The method also includes detecting a failure of the first path, de-assigning the port identifier from the first port, assigning the port identifier to a second port on the first node, and resuming communications between the node and the logical unit. One implementation of a system includes a first port configured to communicate with a storage device, a second port configured to communicate with the storage device, and an identifier management block. The identifier management block executes a failover with N_Port ID Virtualization commands that transfer a world wide port name from the first port to the second port.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: May 9, 2017
    Assignee: Veritas Technologies LLC
    Inventors: Deepak K. Tawri, Abhay K. Singh, Raghu Krishnamurthy
  • Port identifier management for path failover in cluster environments
    Patent number: 8699322
    Abstract: A method includes assigning a port identifier to a first port on a node and communicating data on a first path between the first port and a logical unit on an active/passive storage array. The port identifier is registered in a persistent reservation scheme for the logical unit. The method also includes detecting a failure of the first path, de-assigning the port identifier from the first port, assigning the port identifier to a second port on the first node, and resuming communications between the node and the logical unit. One implementation of a system includes a first port configured to communicate with a storage device, a second port configured to communicate with the storage device, and an identifier management block. The identifier management block executes a failover with N_Port ID Virtualization commands that transfer a world wide port name from the first port to the second port.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: April 15, 2014
    Assignee: Symantec Operating Corporation
    Inventors: Deepak K. Tawri, Abhay K. Singh, Raghu Krishnamurthy
  • Port identifier management for path failover in cluster environments
    Patent number: 7778157
    Abstract: A method includes assigning a port identifier to a first port on a node and communicating data on a first path between the first port and a logical unit on an active/passive storage array. The port identifier is registered in a persistent reservation scheme for the logical unit. The method also includes detecting a failure of the first path, de-assigning the port identifier from the first port, assigning the port identifier to a second port on the first node, and resuming communications between the node and the logical unit. One implementation of a system includes a first port configured to communicate with a storage device, a second port configured to communicate with the storage device, and an identifier management block. The identifier management block executes a failover with N_Port ID Virtualization commands that transfer a world wide port name from the first port to the second port.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: August 17, 2010
    Assignee: Symantec Operating Corporation
    Inventors: Deepak K. Tawri, Abhay K. Singh, Raghu Krishnamurthy