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Metadata optimization for network replication using differential encoding
Metadata optimization for network replication using differential encoding
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机译:使用差分编码的网络复制元数据优化
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摘要
According to one embodiment, in response to a list of fingerprints representing data chunks of a first batch for replication, a second batch previously transmitted to the target storage system is identified based on at least a portion of the fingerprints of the first batch. Differential encoding information is generated representing a difference between fingerprints of the first batch and the second batch. The differential encoding information is transmitted to the target storage system, without transmitting all full fingerprints of the first batch, to allow the target storage system to determine which of the data chunks are missing at the target storage system. In response to information received from the target storage system indicating one or more data chunks that are missing at the target storage system, the missing data chunks are then transmitted to the target storage system.
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