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Method and apparatus for identifying and eliminating duplicate data blocks and sharing data blocks in a storage system
Method and apparatus for identifying and eliminating duplicate data blocks and sharing data blocks in a storage system
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机译:在存储系统中识别和消除重复数据块并共享数据块的方法和装置
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摘要
A method for sharing data blocks in a hierarchical file system in a storage server includes allocating a plurality of data blocks in the file system, and sharing data blocks in the file system, without using a persistent point-in-time image, to avoid duplication of data blocks. A method for identifying data blocks that can be shared includes computing a fingerprint for each of multiple data blocks to be written to a storage facility and storing the fingerprint with information identifying the data block in an entry in a set of metadata. The set of metadata is used to identify data blocks which are duplicates.
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