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Data deduplication has become a commodity in large-scale storage systems, especially in data backup and archival systems. However, due to the removal of redundant data, data deduplication de-linearizes data placement and forces the data chunks of the same data object to be divided into multiple separate units. In our preliminary study, we found that the de-linearization of data placement compromises...
While aggregating the throughput of existing disks on cluster nodes is a cost-effective approach to alleviate the I/O bottleneck in cluster computing, this approach suffers from potential performance degradations due to contentions for shared resources on the same node between storage data processing and user task computation. This paper proposes to judiciously utilize the storage redundancy in the...
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