发明授权
US07844852B2 Data mirror cluster system, method and computer program for synchronizing data in data mirror cluster system
失效
数据镜集群系统，方法和计算机程序，用于在数据镜像集群系统中同步数据
- 专利标题： Data mirror cluster system, method and computer program for synchronizing data in data mirror cluster system
- 专利标题（中）： 数据镜集群系统，方法和计算机程序，用于在数据镜像集群系统中同步数据
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申请号： US11094107申请日： 2005-03-31
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公开(公告)号： US07844852B2公开(公告)日： 2010-11-30
- 发明人: Takahiro Koishi
- 申请人： Takahiro Koishi
- 申请人地址： JP Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Young & Thompson
- 优先权： JP2004-108392 20040331
- 主分类号： G06F11/00
- IPC分类号： G06F11/00
摘要：
Server apparatuses that configure a data mirror cluster system include databases, shared memories, and memory controllers, respectively. The server apparatuses are connected by interconnects and can directly access communication partner's shared memories via the memory controllers, respectively. One of the server apparatuses operates as an operation server apparatus and the other operates as a standby server apparatus. The memory controller of the operation system updates the database and writes changed data to the shared memory of the standby system. The memory controller of the standby system updates the database of the standby system according to the changed data written to the shared memory of the standby system.
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