The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2021
Filed:
Aug. 29, 2018
International Busiiness Machines Corporation, Armonk, NY (US);
Matthew J. Ward, Vail, AZ (US);
Nicolas M. Clayton, Warrington, GB;
Joshua J. Crawford, Tucson, AZ (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
Provided are techniques for determining which target is most ahead in a multi-target mirroring environment between data from a consistent synchronous mirror copy operation and data from a consistent asynchronous mirror copy operation. It is determined that data is to be retrieved from one of a sync secondary storage of a sync secondary storage controller and an async secondary storage of an async secondary storage controller. Then, it is determined which one of data of a consistent synchronous mirror copy operation on the sync secondary storage and data of a consistent asynchronous mirror copy operation on the async secondary storage is a most current copy of the data. The most current copy of the data is retrieved and used for further processing.