Invention Grant
- Patent Title: System and method for providing continuous data protection
- Patent Title (中): 提供连续数据保护的系统和方法
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Application No.: US11413882Application Date: 2006-04-28
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Publication No.: US07769723B2Publication Date: 2010-08-03
- Inventor: Ling Zheng , Robert M. English , Stephen L. Manley , Blake H. Lewis
- Applicant: Ling Zheng , Robert M. English , Stephen L. Manley , Blake H. Lewis
- Applicant Address: US CA Sunnyvale
- Assignee: NetApp, Inc.
- Current Assignee: NetApp, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Cesari and McKenna, LLP
- Main IPC: G06F7/00
- IPC: G06F7/00

Abstract:
A system and method provides continuous data protection using checkpoints in a write anywhere file system. During a consistency point of a write anywhere file system, freed blocks are identified and are appended to a delete log for retention. A consistency point log is updated with a new entry associated with the consistency point. If the file system needs to retrieve its state at a particular point in time, the stored blocks of the delete log may be recovered.
Public/Granted literature
- US20070276878A1 System and method for providing continuous data protection Public/Granted day:2007-11-29
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