Patents by Inventor Sunita V. Nishanov

Sunita V. Nishanov 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).

  • Patent number: 7984155
    Abstract: A method and system for increasing server cluster availability by requiring at a minimum only one node and a quorum replica set of replica members to form and operate a cluster. Replica members maintain cluster operational data. A cluster operates when one node possesses a majority of replica members, which ensures that any new or surviving cluster includes consistent cluster operational data via at least one replica member from the immediately prior cluster. Arbitration provides exclusive ownership by one node of the replica members, including at cluster formation, and when the owning node fails. Arbitration uses a fast mutual exclusion algorithm and a reservation mechanism to challenge for and defend the exclusive reservation of each member. A quorum replica set algorithm brings members online and offline with data consistency, including updating unreconciled replica members, and ensures consistent read and update operations.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: July 19, 2011
    Assignee: Microsoft Corporation
    Inventors: Michael T. Massa, David A. Dion, Raj Das, Rushabh Doshi, David B. Lomet, Gor V. Nishanov, Philip A. Bernstein, Rod N. Gamache, Rohit N. Jain, Sunita V. Nishanov