Methods and computer program products of selecting a new redundancy scheme for data relocation
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United States of America Patent
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Jan 3, 2017
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N/A
app pub date -
Dec 10, 2015
filing date -
Dec 10, 2015
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Abstract
Embodiments include methods, computer systems and computer program products for selecting a new redundancy scheme for data relocation in computer system having multiple data storage tiers and multiple redundancy schemes. Aspects include: receiving, at a processor of computer system, a request to relocate a data object to a destination data storage tier, retrieving a first and a second data reliability thresholds, redundancy scheme and data access pattern information of the data object, generating a set of available redundancy schemes for the data object with at least one copy on the destination data storage tier, calculating total cost for each of available redundancy schemes using performance cost, re-encoding cost, and storage cost for each of available redundancy schemes generated, selecting a redundancy scheme, and relocating data object to selected destination data storage tier by re-encoding the data object using the selected redundancy scheme.
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