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.

Date of Patent:
May. 11, 2021

Filed:

Dec. 10, 2018
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Gang Lyu, Shanghai, CN;

Bo Zou, Shanghai, CN;

Yang Liu, Shanghai, CN;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/20 (2006.01);
U.S. Cl.
CPC ...
G06F 11/2082 (2013.01); G06F 2201/805 (2013.01); G06F 2201/82 (2013.01);
Abstract

A computer-implemented method, according to one embodiment, includes: detecting an outage at a production site, and transferring I/O functionality to a first recovery site. In response to resolving the outage, first and second out-of-sync bitmaps are received from the first and second recovery sites, respectively. The out-of-sync bitmaps are merged together. Performance data which corresponds to achievable throughput is received from each of the first and second recovery sites, and the performance data is used to divide the merged out-of-sync bitmap into two portions. A request is sent to the first recovery site for data which corresponds to the first portion of the merged out-of-sync bitmap. Similarly, a request is sent to the second recovery site for data which corresponds to the second portion of the merged out-of-sync bitmap. Finally, data is received which corresponds to the first and second portions of the merged out-of-sync bitmap respectively, in parallel.


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