Evaluating Scheduling and Replica Optimisation Strategies in OptorSim
GRID '03 Proceedings of the 4th International Workshop on Grid Computing
Dynamic replication algorithms for the multi-tier Data Grid
Future Generation Computer Systems - Special issue: Parallel computing technologies
The impact of data replication on job scheduling performance in the Data Grid
Future Generation Computer Systems
The complexity of static data replication in data grids
Parallel Computing
Complete and fragmented replica selection and retrieval in Data Grids
Future Generation Computer Systems
Job scheduling and data replication on data grids
Future Generation Computer Systems
An on-line replication strategy to increase availability in Data Grids
Future Generation Computer Systems
QoS-based dissemination of content in Grids
Future Generation Computer Systems
Globus toolkit version 4: software for service-oriented systems
NPC'05 Proceedings of the 2005 IFIP international conference on Network and Parallel Computing
A model to predict the optimal performance of the Hierarchical Data Grid
Future Generation Computer Systems
FIRE: A File Reunion Based Data Replication Strategy for Data Grids
CCGRID '10 Proceedings of the 2010 10th IEEE/ACM International Conference on Cluster, Cloud and Grid Computing
PHFS: A dynamic replication method, to decrease access latency in the multi-tier data grid
Future Generation Computer Systems
Enhanced Fast Spread Replication strategy for Data Grid
Journal of Network and Computer Applications
A survey of dynamic replication strategies for improving data availability in data grids
Future Generation Computer Systems
PFRF: An adaptive data replication algorithm based on star-topology data grids
Future Generation Computer Systems
A threshold-based dynamic data replication strategy
The Journal of Supercomputing
The Journal of Supercomputing
Enhanced Dynamic Hierarchical Replication and Weighted Scheduling Strategy in Data Grid
Journal of Parallel and Distributed Computing
Job scheduling and dynamic data replication in data grid environment
The Journal of Supercomputing
International Journal of Security and Networks
MORM: A Multi-objective Optimized Replication Management strategy for cloud storage cluster
Journal of Systems Architecture: the EUROMICRO Journal
The Journal of Supercomputing
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Data grids deal with a huge amount of data regularly. It is a fundamental challenge to ensure efficient accesses to such widely distributed data sets. Creating replicas to a suitable site by data replication strategy can increase the system performance. It shortens the data access time and reduces bandwidth consumption. In this paper, a dynamic data replication mechanism called Latest Access Largest Weight (LALW) is proposed. LALW selects a popular file for replication and calculates a suitable number of copies and grid sites for replication. By associating a different weight to each historical data access record, the importance of each record is differentiated. A more recent data access record has a larger weight. It indicates that the record is more pertinent to the current situation of data access. A Grid simulator, OptorSim, is used to evaluate the performance of this dynamic replication strategy. The simulation results show that LALW successfully increases the effective network usage. It means that the LALW replication strategy can find out a popular file and replicates it to a suitable site without increasing the network burden too much.