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公开(公告)号:US09383940B1
公开(公告)日:2016-07-05
申请号:US14197618
申请日:2014-03-05
申请人: EMC Corporation
发明人: Stephen Richard Ives , John F. Madden, Jr. , Michael Dudnik , Hagit Brit-Artzi , Roii Raz , Hui Wang , Gabi Hershkovitz , Qun Fan , Ofer Michael
IPC分类号: G06F3/06
CPC分类号: G06F3/0647 , G06F3/0604 , G06F3/0617 , G06F3/0683 , G06F3/0688 , G06F2003/0697
摘要: Described are techniques for performing data migration for a source logical volume and a target. The target is configured as storage for another mirror of the source logical volume prior to copying data from the source logical volume to the target, and if the target is configured storage of another logical volume of the data storage system, the configured storage is remapped as storage for another mirror of the source logical volume prior to copying data from the source logical volume to the target. One or more invalid bits are set indicating that the target does not contain a valid copy of data from the source logical volume. Data is copied from the first mirror of the source logical volume to the target. Invalid bits are cleared as data portions of the first mirror of the source logical volume are copied to the target.
摘要翻译: 描述了用于为源逻辑卷和目标执行数据迁移的技术。 在将数据从源逻辑卷复制到目标之前,将目标配置为源逻辑卷的另一个镜像的存储,并且如果目标是数据存储系统的另一个逻辑卷的配置存储,则将配置的存储重新映射为 在将数据从源逻辑卷复制到目标之前,存储源逻辑卷的另一个镜像。 设置一个或多个无效位,指示目标不包含来自源逻辑卷的数据的有效副本。 数据从源逻辑卷的第一个镜像复制到目标。 无效位被清除,因为源逻辑卷的第一个镜像的数据部分被复制到目标。