Distributed Storage over Unidirectional Ring Networks

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Provided by: Cornell University
Topic: Storage
Format: PDF
In this paper, the authors study distributed storage problems over unidirectional ring networks, whose storage nodes form a directed ring and data is transmitted along the same direction. The original data is distributed to store on these nodes. Each user can connect one and only one storage node to download the total data. A lower bound on the reconstructing bandwidth to recover the original data for each user is proposed, and it is achievable for arbitrary parameters. If a distributed storage scheme can achieve this lower bound with equality for every user, they say it an Optimal Reconstructing Distributed Storage Scheme (ORDSS).
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