Invention Grant
US07770053B1 Systems and methods for maintaining data integrity during a migration
有权
在迁移过程中维护数据完整性的系统和方法
- Patent Title: Systems and methods for maintaining data integrity during a migration
- Patent Title (中): 在迁移过程中维护数据完整性的系统和方法
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Application No.: US11607067Application Date: 2006-12-01
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Publication No.: US07770053B1Publication Date: 2010-08-03
- Inventor: Micheal E. Bappe , Helen S. Raizen , Edward L. Thigpen
- Applicant: Micheal E. Bappe , Helen S. Raizen , Edward L. Thigpen
- Applicant Address: US MA Hopkinton
- Assignee: EMC Corporation
- Current Assignee: EMC Corporation
- Current Assignee Address: US MA Hopkinton
- Agency: Daly, Crowley, Mofford & Durkee, LLP
- Main IPC: G06F11/00
- IPC: G06F11/00

Abstract:
Systems and methods are provided for maintaining data integrity in the event of device write failures during a non-disruptive migration. In one embodiment, a computer-implemented method is provided. According to the method, a filter driver in a kernel may clone an application write to both a source storage device and a target storage device. The method may detect whether the cloned application write to the source storage device or the cloned application write to target storage device failed. When the cloned application write to the source storage device or the cloned application write to target storage device failed, the method may allow application reads from only one of the source storage device and the target storage device thereafter.
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