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Distributed P2P Data Backup System
Mészáros, István ; Herout, Adam (oponent) ; Szőke, Igor (vedoucí práce)
This master's thesis briefly presents a model and a prototype of a cooperative distributed data storage system based on P2P network communication. The system design lets the users to contribute their local free space in exchange of reliable remote storage, which is a virtually co-allocated space on other users' devices. The introduced solution tries to meet the users' requirements for data storing, meanwhile work around the issue of their unpredictability when it comes to contribution of free space. This is mainly done by harnessing the capabilities of Reed-Solomon codes, but by providing adjustable parameters for the contributions as well. One of these parameters is the time frame, which describes when can a user offer contribution to the system. The second parameter refers to the reliability of the user inside his promised time frame. The system is responsible for finding partner contributions for data storage based on these parameters.   This thesis also focuses on solving the wider spectrum security issues of the system. The main goal of this work was to publish the prototype and the concept itself. As this is a relatively new solution and design, feedback is required from the public, which is also the main source for further designing and developing the system.

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