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EFFICIENT ASYNCHRONOUS MIRROR COPY OF FULLY PROVISIONED VOLUMES TO THIN-PROVISIONED VOLUMES
EFFICIENT ASYNCHRONOUS MIRROR COPY OF FULLY PROVISIONED VOLUMES TO THIN-PROVISIONED VOLUMES
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机译:全量卷对薄量卷的有效异步镜像复制
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摘要
A method for copying data from a primary fully provisioned volume to a secondary thin-provisioned volume is disclosed. In one embodiment, such a method includes hosting, on a primary storage system, a fully provisioned volume comprising a plurality of storage elements. A volume table of contents (VTOC) associated with the fully provisioned volume is analyzed to determine which storage elements in the fully provisioned volume have been allocated to data sets. In certain embodiments, the VTOC is copied into memory of a secondary host system and the secondary host system analyzes the copy to determine which storage elements in the fully provisioned volume have been allocated to data sets. The method then copies, from the fully provisioned volume to a secondary thin-provisioned volume, data in only those storage elements that have been allocated to data sets. A corresponding system and computer program product are also disclosed.
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