Successive data fingerprinting for copy accuracy assurance
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United States of America Patent
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Feb 27, 2018
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app pub date -
Nov 18, 2014
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Nov 18, 2013
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Abstract
Systems and methods for checking data integrity of a data object copied between storage pools in a storage system by comparing data samples copied from data objects. A series of successive copy operations are scheduled over time for copying a data object from a source data store to a target data store. A first data sample is generated based on a sampling scheme comprising an offset and a period. A second data sample is generated using a similar sampling scheme. The blocks of data in the first data sample and the second data sample are compared to determine if they differ to thereby indicate that the data object at the target store differs from the corresponding data object at the source data store.
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