A Realistic Distributed Storage System That Minimizes Data Storage and Repair Bandwidth
| Autor: | Bernat Gaston, Mercè Villanueva, Jaume Pujol |
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| Rok vydání: | 2013 |
| Předmět: |
FOS: Computer and information sciences
Hardware_MEMORYSTRUCTURES ComputerSystemsOrganization_COMPUTERSYSTEMIMPLEMENTATION business.industry Computer science Computer Science - Information Theory Information Theory (cs.IT) EMC Invista Distributed computing Information repository Storage area network Computer Science - Distributed Parallel and Cluster Computing Converged storage Computer data storage Distributed data store Distributed Parallel and Cluster Computing (cs.DC) business Cloud storage Storage violation |
| Zdroj: | DCC |
| DOI: | 10.1109/dcc.2013.72 |
| Popis: | In a realistic distributed storage environment, storage nodes are usually placed in racks, a metallic support designed to accommodate electronic equipment. It is known that the communication (bandwidth) cost between nodes within a rack is much lower than the communication (bandwidth) cost between nodes within different racks. In this paper, a new model, where the storage nodes are placed in two racks, is proposed and analyzed. In this model, the storage nodes have different repair costs to repair a node depending on the rack where they are placed. A threshold function, which minimizes the amount of stored data per node and the bandwidth needed to regenerate a failed node, is shown. This threshold function generalizes the threshold function from previous distributed storage models. The tradeoff curve obtained from this threshold function is compared with the ones obtained from the previous models, and it is shown that this new model outperforms the previous ones in terms of repair cost. Comment: 10 pages, accepted as a poster in the Data Compression Conference 2013 |
| Databáze: | OpenAIRE |
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