Invention Grant
- Patent Title: Exclusion of data from a persistent point-in-time image
- Patent Title (中): 从持久时间点图像中排除数据
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Application No.: US12428396Application Date: 2009-04-22
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Publication No.: US08364644B1Publication Date: 2013-01-29
- Inventor: Sandeep Yadav , Subramaniam V. Periyagaram
- Applicant: Sandeep Yadav , Subramaniam V. Periyagaram
- Applicant Address: US CA Sunnyvale
- Assignee: Network Appliance, Inc.
- Current Assignee: Network Appliance, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: G06F17/30
- IPC: G06F17/30
Abstract:
A data set on a physical storage device is associated with an active bitmap and a persistent point-in-time image (PPI) exclusion bitmap, where each bit in the bitmaps is associated with a data block in the data set. The active bitmap and the PPI exclusion bitmap are used to determine which of the data blocks in the data set are to be included in a PPI of the data set.
Information query
