Reliability and Availability Improvement in Economic Data Grid Environment Based On Clustering Approach
الموضوعات :Ali Abbasi 1 , Amir Masoud Rahmani 2 , Esmaeil Zeinali Khasraghi 3
1 - Islamic Azad University, Science and Research Branch, Qazvin, Department of Computer, Qazvin, Iran.
2 - Islamic Azad University, Science and Research Branch, Tehran, Department of Computer, Tehran, Iran.
3 - Islamic Azad University, Science and Research Branch, Qazvin, Department of Computer, Qazvin, Iran.
الکلمات المفتاحية: availability, Reliability, data grid, Dynamic Data Replication, Fault Injection,
ملخص المقالة :
Abstract - One of the important problems in grid environments is data replication in grid sites. Reliability and availability of data replication in some cases is considered low. To separate sites with high reliability and high availability of sites with low availability and low reliability, clustering can be used. In this study, the data grid dynamically evaluate and predict the condition of the sites. The reliability and availability of sites were calculated and it was used to make decisions to replicate data. With these calculations, we have information on the locations of users in grid with reliability and availability or cost commensurate with the value of the work they did. This information can be downloaded from users who are willing to send them data with suitable reliability and availability. Simulation results show that the addition of the two parameters, reliability and availability, assessment criteria have been improved in certain access patterns.
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