Invention Grant
- Patent Title: Remote copy synchronization in disaster recovery computer systems
- Patent Title (中): 灾难恢复计算机系统中的远程复制同步
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Application No.: US12192564Application Date: 2008-08-15
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Publication No.: US07716518B2Publication Date: 2010-05-11
- Inventor: Henry E. Butterworth , Carlos F. Fuente
- Applicant: Henry E. Butterworth , Carlos F. Fuente
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Dillon & Yudell LLP
- Main IPC: G06F11/00
- IPC: G06F11/00

Abstract:
A method, storage system, and machine-readable medium for resynchronizing data stored among a first storage element and a second storage element of a remote copy pair of storage elements is disclosed. According to one embodiment, a method is provided which includes detecting a reestablishment of a remote copy relationship between the first and second storage elements and performing a resynchronization operation in response to this detection. Performing the resynchronization operation comprises transmitting data of a second change record associated with the second storage element to the first storage element, combining the second change record with a first change record associated with the first storage element, identifying a data segment of the second storage element utilizing the combined change record, and overwriting data of the first storage element with data of the identified data segment.
Public/Granted literature
- US20080301494A1 Remote Copy Synchronization in Disaster Recovery Computer Systems Public/Granted day:2008-12-04
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