Journal article

Dynamic replication and migration of data objects with hot-spot and cold-spot statuses across storage data centers

Yaser Mansouri, Rajkumar Buyya

JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING | ACADEMIC PRESS INC ELSEVIER SCIENCE | Published : 2019

Abstract

Cloud Storage Providers (CSPs) offer geographically dispersed data stores providing several storage classes with different prices. A vital problem faced by application providers is how to exploit price differences across data stores to minimize monetary cost of applications that include hot-spot objects that are accessed frequently and cold-spot objects that are often accessed far less. This monetary cost consists of replica creation, storage, Put, Get, and potential migration costs. To optimize such costs, we first propose the optimal solution that leverages dynamic and linear programming techniques with the assumption that the workload on objects is known in advance. We also propose a ligh..

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