Patents by Inventor Daniel M. AIZER

Daniel M. AIZER 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).

  • Reverse resynchronization by a secondary data source when a data destination has more recent data
    Patent number: 9734028
    Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include configuring a first storage system to mirror first storage regions to corresponding second storage regions in a second storage system via a first data connection, and to mirror the first storage regions to corresponding third storage regions in a third storage system via a second data connection. Upon the second storage system receiving, subsequent to detecting a failure of the first storage system, a host I/O request to retrieve data from a given second storage region and determining that the respective timestamp of the corresponding third storage region on the third storage system is more recent than the respective timestamp of the given second storage region on the second storage system, the second storage system retrieves, via a third data connection, the data from the corresponding third storage region on the third storage system.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: August 15, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Daniel M. Aizer, Yuval Ben-Horin, Michael Keller, Osnat Shasha
  • REVERSE RESYNCHRONIZATION BY A SECONDARY DATA SOURCE WHEN A DATA DESTINATION HAS MORE RECENT DATA
    Publication number: 20160378625
    Abstract: Methods, computing systems and computer program products implement embodiments of the present invention that include configuring a first storage system to mirror first storage regions to corresponding second storage regions in a second storage system via a first data connection, and to mirror the first storage regions to corresponding third storage regions in a third storage system via a second data connection. Upon the second storage system receiving, subsequent to detecting a failure of the first storage system, a host I/O request to retrieve data from a given second storage region and determining that the respective timestamp of the corresponding third storage region on the third storage system is more recent than the respective timestamp of the given second storage region on the second storage system, the second storage system retrieves, via a third data connection, the data from the corresponding third storage region on the third storage system.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 29, 2016
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Daniel M. AIZER, Yuval BEN-HORIN, Michael KELLER, Osnat SHASHA