发明授权
US07624230B2 Information processing apparatus, information processing method and storage system using cache to reduce dynamic switching of mapping between logical units and logical devices
有权
信息处理装置，使用缓存的信息处理方法和存储系统来减少逻辑单元和逻辑设备之间的映射的动态切换
- 专利标题： Information processing apparatus, information processing method and storage system using cache to reduce dynamic switching of mapping between logical units and logical devices
- 专利标题（中）： 信息处理装置，使用缓存的信息处理方法和存储系统来减少逻辑单元和逻辑设备之间的映射的动态切换
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申请号： US11593976申请日： 2006-11-06
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公开(公告)号： US07624230B2公开(公告)日： 2009-11-24
- 发明人: Hitoshi Kamei , Takaki Nakamura
- 申请人： Hitoshi Kamei , Takaki Nakamura
- 申请人地址： JP Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2006-254113 20060920
- 主分类号： G06F12/00
- IPC分类号： G06F12/00
摘要：
An information processing system having a storage apparatus and a file sharing server. The storage apparatus comprises a plurality of storage devices for providing logical devices to store data; and a first processing unit for providing virtual logical units based on a mapping relation between the logical devices and the virtual logical units and being operative to switch the mapping relation dynamically according to an external request. The file sharing server comprises a cache memory including cache extents and a second processing unit controlled to provide the virtual logical units of the storage apparatus to a host system by using the cache extents, managing the mapping relation between the logical devices and the virtual logical units. The mapping between a logical unit and a logical device is dynamically switched as the logical devices store data provided from the host system according to external requests.