发明授权
- 专利标题： Method and system for reducing the number of read-only, persistent point-in-time images on a storage server
- 专利标题（中）： 减少存储服务器上只读持久时间点图像数量的方法和系统
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申请号： US11332188申请日： 2006-01-12
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公开(公告)号： US07725436B1公开(公告)日： 2010-05-25
- 发明人: Collin Y. Park
- 申请人： Collin Y. Park
- 申请人地址： US CA Sunnyvale
- 专利权人： Network Appliance, Inc,
- 当前专利权人： Network Appliance, Inc,
- 当前专利权人地址： US CA Sunnyvale
- 代理机构： Blakely, Sokoloff, Taylor & Zafman LLP
- 主分类号： G06F7/00
- IPC分类号： G06F7/00 ; G06F17/00
摘要：
A plurality of read-only, persistent point-in-time images (RPPIs) of a file system are maintained on a storage server. Each of these RPPIs is created to capture an update of the file system. The file system has at least one subset. If, for each subset of the file system, the file system has an RPPI, other than a first RPPI, having a corresponding subset identical to the first RPPI's corresponding subset, the first RPPI may be deleted, yet all updates captured by the first RPPI are still maintained by other RPPI or RPPIs.
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