An Approach for Replica Creation & Replica Placement using MCDM
Amit Kumar Singh · International Journal for Research in Applied Science and Engineering Technology · 2018
Due to huge amount of data creation day by day in all the fields, maintaining and managing the data in effective manner is an arduous task. To increasing the availability of data, distributed data storage system is playing a very essential role. Huge amount of data is created for many purpose and handling of this data, data management is required. To improve the performance of the system in which data is not locally available & data is shared to many users to increase the performance of the system, data replication is the technique which is used to improve the performance of availability & decrease the latency of system. Maintaining the consistency of data in replicated data system is today's burning topic of research. Very few methods have been proposed for maintaining the consistency while replica creation and replica placement. In this paper, a combination of replica creation & replica placement algorithm has been proposed in which most popular file is obtained using the calculation of access frequency of all the data items & replica placement is performed using multi criteria decision making technique. analytical hierarchy process is used for the selection of best node for replica placement considering various criteria for selection. The simulation results show that the above scheme outperforms than other techniques