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Mechanism for converting one type of mirror to another type of mirror on a storage system without transferring data
Mechanism for converting one type of mirror to another type of mirror on a storage system without transferring data
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机译:在存储系统上将一种类型的镜像转换为另一种类型的镜像而无需传输数据的机制
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摘要
Embodiments of the present invention provide a mechanism for converting an existing mirror relationship between an original dataset at a source storage system and a copy of the original dataset at a destination system to a new mirror without discarding the existing copy of the original dataset and without transferring data to create a new dataset to replace the copy of the original dataset at the destination storage system. Rather, a directory structure (including file attributes) of the source storage system is transferred to the destination storage system and a comparison is made to identify file attributes at the destination system that match the transferred file attributes. If a match is found, a mapping between the matched file attributes is created. Subsequent updates to the to destination storage system can be done using a technique other than the one that was used to create a copy of the source dataset.
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