An Approach Based on Market Economy for Consistency Management in Data Grids with OptorSim Simulator

An Approach Based on Market Economy for Consistency Management in Data Grids with OptorSim Simulator

Ghalem Belalem, Belabbes Yagoubi, Samah Bouamama
Copyright: © 2008 |Pages: 16
DOI: 10.4018/jitwe.2008070101
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Abstract

Data grids are currently solutions suggested to meet the needs for the scale large systems. They provide highly varied and geographically distributed resources of which the goal is to ensure a fast access and effective data access. This is to improve the availability and tolerate the breakdowns. In such systems, these advantages are not possible without the use of replication. Use of the technique of replication poses the problem as regards maintenance of the consistency of the same replicas; the strategies of replication of the data and scheduling of the jobs were tested by simulation. Several grid simulators were born. One of the most interesting simulators for our study is the OptorSim tool. In this article, we present an extension of OptorSim by a consistency management module of the replicas in data grids; we propose a hybrid step which combines the economic models conceived for a hierarchical model with two levels.

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