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DATA PLACEMENT BASED ON LIKELIHOODS OF CORRELATED STORAGE-DEVICE FAILURES
DATA PLACEMENT BASED ON LIKELIHOODS OF CORRELATED STORAGE-DEVICE FAILURES
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机译:基于相关存储设备故障的相似性的数据放置
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摘要
A storage apparatus includes an interface and a processor. The interface is configured to communicate with a plurality of storage devices. The processor is configured to estimate likelihood metrics that are indicative of likelihoods that respective subsets of the storage devices will fail concurrently, to select from among the plurality of the storage devices, based on the likelihood metrics, a group of the storage devices on which to store given data and redundancy information associated with the given data, and to store the given data and the redundancy information on the storage devices in the selected group.
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