Hardware and software data processing system for research and scientific purposes based on Raspberry Pi 3 microcomputer

In the past ten years, rapid progress has been observed in science and technology through the development of smart mobile devices, workstations, supercomputers, smart gadgets and network servers. Increase in the number of Internet users and a multiple increase in the speed of the Internet led to the generation of a huge amount of data, which is now commonly called «big data». Given this scenario, storing and processing data on local servers or personal computers can cause a number of problems that can be solved using distributed computing, distributed data storage and distributed data transfer. There are currently several cloud service providers to solve these problems, like Amazon Web Services, Microsoft Azure, Cloudera and etc. Approaches for distributed computing are supported using powerful data processing centers (DPCs). However, traditional DPCs require expensive equipment, a large amount of energy to run and operate the system, a powerful cooling system and occupy a large area. In addition, to maintain such a system, its constant use is necessary, because its stand-by is economically disadvantageous. The article is aimed at the possibility of using a Raspberry Pi and Hadoop cluster for distributed storage and processing of «big data». Such a trip provides low power consumption, the use of limited physical space, high-speed solution to the problems of processing data. Hadoop provides the necessary modules for distributed processing of big data by deploying Map-Reduce software approaches. Data is stored using the Hadoop Distributed File System (HDFS), which provides more flexibility and greater scalability than a single computer. The proposed hardware and software data processing system based on Raspberry Pi 3 microcomputer can be used for research and scientific purposes at universities and scientific centers. Considered distributed system shows economically efficiency in comparison to traditional DPCs. The results of pilot project of Raspberry Pi cluster application are presented. A distinctive feature of this work is the use of distributed computing systems on single-board microcomputers for academic purposes for research and educational tasks of students with minimal cost and ease of creating and using the system.