Invention Grant
- Patent Title: Method and system for single pass volume scanning for multiple destination mirroring
- Patent Title (中): 用于多目标镜像的单次卷扫描的方法和系统
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Application No.: US12020174Application Date: 2008-01-25
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Publication No.: US07685388B1Publication Date: 2010-03-23
- Inventor: Tianyu Jiang
- Applicant: Tianyu Jiang
- 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: G06F12/00
- IPC: G06F12/00
Abstract:
A method for operating a computer data storage system stores snapshots of an active file system of the storage system at a plurality of destinations. A latest snapshot stored at each destination of the plurality of destinations is identified. Those data blocks which are newer than the latest snapshot stored at the each destination are sent to the each destination. The active file system is scanned to find each data block newer than the oldest snapshot stored at a selected destination, and all such data blocks are tagged. Those data blocks which are tagged are sent to the selected destination.
Information query
