发明公开
- 专利标题: Data storage using a cache and method therefor
- 专利标题(中): 使用高速缓存的数据存储
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申请号: EP91300595.5申请日: 1991-01-25
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公开(公告)号: EP0441508A3公开(公告)日: 1993-04-21
- 发明人: Bozman, Gerald Parks , Eisenberger, George , Lett, Alexander Stafford , Myers, James Joseph , Tetzlaff, William Harold , Unger, Jay Harold
- 申请人: International Business Machines Corporation
- 申请人地址: Old Orchard Road Armonk, N.Y. 10504 US
- 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: Old Orchard Road Armonk, N.Y. 10504 US
- 代理机构: Burt, Roger James, Dr.
- 优先权: US477704 19900209
- 主分类号: G06F12/08
- IPC分类号: G06F12/08
摘要:
Data in pages is mapped into a very large virtual external address space (25) through a cache without disturbing the logical view of the data and without having to assign physical or real backing store to said logical view. A data cache (27) is used in which pages are indexed according to a logical address (23) intermediate to their virtual address and their physical location in external storage (5). Pages common to two or more files are updated in place in the cache, while pages bound to only one file are shadow copied.
公开/授权文献
- EP0441508B1 Data storage using a cache and method therefor 公开/授权日:1996-07-24
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