Análise de mecanismos de replicação de dados para grades de computadores / Analysis of data replication mechanisms for grid computing
AUTOR(ES)
Leonardo Pancieri Ferreira de Freitas
DATA DE PUBLICAÇÃO
2010
RESUMO
A datagrid is an distributed computing environment designed to aggregate and share storage resources that are geographically distant. Datagrids provides infrastructure and services for discovery, transfer, handling and managing large amounts of data stored in distributed repositories. The datagrids share characteristics with peer-to-peer networks, distributed databases and content distribution networks (CDN). Many of the replication, placement and search policies used in these networks are common with datagrids. The focus of this work is to study the influence of policies (replication, placement and search), network topologies and their interaction on the performance for storage, file searching, replica survival and network traffic. This research also considers the interactions of various policies with topologies of networks under node failures. The methodology adopted to carry out the evaluation in this work is the use of simulation. With a simulator it is possible to concentrate studies on the relationships between policies and network topologies, avoiding the complexity of a grid with heterogeneous resources. Results show significant effects on grid performance of topological features of the networks and its interaction with policies.
ASSUNTO(S)
placement strategies políticas de substituição search strategies grades de dados data replication datagrids replicação de dados políticas de replicação políticas de busca replication strategies
