Patents by Inventor Ananda R. Vayyala

Ananda R. Vayyala 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).

  • High-availability cluster virtual server system
    Patent number: 6944785
    Abstract: Systems and methods, including computer program products, providing high-availability in server systems. In one implementation, a server system is cluster of two or more autonomous server nodes, each running one or more virtual servers. When a node fails, its virtual servers are migrated to one or more other nodes. Connectivity between nodes and clients is based on virtual IP addresses, where each virtual server has one or more virtual IP addresses. Virtual servers can be assigned failover priorities, and, in failover, higher priority virtual servers can be migrated before lower priority ones. Load balancing can be provided by distributing virtual servers from a failed node to multiple different nodes. When a port within a node fails, the node can reassign virtual IP addresses from the failed port to other ports on the node until no good ports remain and only then migrate virtual servers to another node or nodes.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: September 13, 2005
    Assignee: Network Appliance, Inc.
    Inventors: Omar M. A. Gadir, Kartik Subbanna, Ananda R. Vayyala, Hariprasad Shanmugam, Amod P. Bodas, Tarun Kumar Tripathy, Ravi S. Indurkar, Kurma H. Rao
  • High-availability cluster virtual server system
    Publication number: 20030018927
    Abstract: Systems and methods, including computer program products, providing high-availability in server systems. In one implementation, a server system is cluster of two or more autonomous server nodes, each running one or more virtual servers. When a node fails, its virtual servers are migrated to one or more other nodes. Connectivity between nodes and clients is based on virtual IP addresses, where each virtual server has one or more virtual IP addresses. Virtual servers can be assigned failover priorities, and, in failover, higher priority virtual servers can be migrated before lower priority ones. Load balancing can be provided by distributing virtual servers from a failed node to multiple different nodes. When a port within a node fails, the node can reassign virtual IP addresses from the failed port to other ports on the node until no good ports remain and only then migrate virtual servers to another node or nodes.
    Type: Application
    Filed: July 23, 2001
    Publication date: January 23, 2003
    Inventors: Omar M.A. Gadir, Kartik Subbanna, Ananda R. Vayyala, Hariprasad Shanmugam, Amod P. Bodas, Tarun Kumar Tripathy, Ravi S. Indurkar, Kurma H. Rao