发明授权
US06996688B2 Method, system, and program for improved throughput in remote mirroring systems
有权
用于提高远程镜像系统吞吐量的方法，系统和程序
- 专利标题： Method, system, and program for improved throughput in remote mirroring systems
- 专利标题（中）： 用于提高远程镜像系统吞吐量的方法，系统和程序
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申请号： US10386985申请日： 2003-03-11
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公开(公告)号： US06996688B2公开(公告)日： 2006-02-07
- 发明人: Michael E. Factor , Shachar Fienblit , Olympia Gluck , Joseph Smith Hyde, II , Thomas Charles Jarvis , William Frank Micka , Gail Andrea Spear , Martin Jacob Tross , Aviad Zlotnick
- 申请人： Michael E. Factor , Shachar Fienblit , Olympia Gluck , Joseph Smith Hyde, II , Thomas Charles Jarvis , William Frank Micka , Gail Andrea Spear , Martin Jacob Tross , Aviad Zlotnick
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 代理机构： Konrad Raynes & Victor LLP
- 代理商 Janaki K. Davda
- 主分类号： G06F12/00
- IPC分类号： G06F12/00 ; G06F13/00
摘要：
Disclosed is a method, system, and program for reducing an mount of data transferred. Indicators of sub-blocks modified for a block of data since the block of data was last sent to remote storage are maintained until the block of data is demoted. The maintained indicators are used to identify sub-blocks on the block of data for transfer to the remote storage.Disclosed is a method, system, and program for managing metadata in cache. A first policy is used to determine when to remove data from a primary cache, and a second policy is used to determine when to remove data from a metadata cache.
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