Patents by Inventor Gor V. Nishanov

Gor 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).

  • Consistent cluster operational data in a server cluster using a quorum of replicas
    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
  • CONSISTENT CLUSTER OPERATIONAL DATA IN A SERVER CLUSTER USING A QUORUM OF REPLICAS
    Publication number: 20100250750
    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: Application
    Filed: June 14, 2010
    Publication date: September 30, 2010
    Applicant: MICROSOFT CORPORATION
    Inventors: MICHAEL T. MASSA, DAVID A. DION, RAJSEKHAR DAS, RUSHABH A. DOSHI, DAVID B. LOMET, GOR V. NISHANOV, PHILIP A. BERNSTEIN, ROD N. GAMACHE, ROHIT JAIN, SUNITA SHRIVASTAVA
  • Consistent cluster operational data in a server cluster using a quorum of replicas
    Patent number: 7774469
    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: September 12, 2005
    Date of Patent: August 10, 2010
    Inventors: Michael T. Massa, David A. Dion, Rajsekhar Das, Rushabh Doshi, David B. Lomet, Gor V. Nishanov, Philip A. Bernstein, Rod N. Gamache, Rohit Jain, Sunita V. Shrivastava
  • Method and system for consistent cluster operational data in a server cluster using a quorum of replicas
    Patent number: 6938084
    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, independent from the nodes, 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: July 2, 2001
    Date of Patent: August 30, 2005
    Assignee: Microsoft Corporation
    Inventors: Rod Gamache, Michael T. Massa, Sunita Shrivastava, Gor V. Nishanov, David B. Lomet, Philip A. Bernstein, Rohit Jain
  • Method and system for consistent cluster operational data in a server cluster using a quorum of replicas
    Publication number: 20020161889
    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, independent from the nodes, 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: Application
    Filed: July 2, 2001
    Publication date: October 31, 2002
    Inventors: Rod Gamache, Michael T. Massa, Sunita Shrivastava, Gor V. Nishanov, David B. Lomet, Philip A. Bernstein, Rohit Jain