Invention Grant
- Patent Title: Efficient migration between asynchronous data replication technologies
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Application No.: US15842887Application Date: 2017-12-15
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Publication No.: US11657068B2Publication Date: 2023-05-23
- Inventor: Joshua J. Crawford , Gregory E. McBride , Warren K. Stanley , Matthew J. Ward
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Nelson IP
- Agent Daniel P. Nelson
- Main IPC: G06F16/27
- IPC: G06F16/27 ; G06F16/23 ; G06F11/20

Abstract:
A method for converting from one asynchronous data replication technology to another is disclosed herein. In one embodiment, such a method includes utilizing a first asynchronous data replication technology to asynchronously replicate data from a primary volume to a secondary volume. The method initiates, at time T1, tracking of post-T1 changes to the primary volume and waits for all pre-T1 changes to the primary volume to be propagated to the secondary volume. When all pre-T1 changes have been propagated to the secondary volume, the method suspends operation of the first asynchronous data replication technology and replicates all post-T1 changes from the primary volume to the secondary volume. The method further sets up and initiates a second asynchronous data replication technology to asynchronously replicate data from the primary volume to the secondary volume. A corresponding system and computer program product are also disclosed herein.
Public/Granted literature
- US20190188310A1 EFFICIENT MIGRATION BETWEEN ASYNCHRONOUS DATA REPLICATION TECHNOLOGIES Public/Granted day:2019-06-20
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