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Cybernetics and programming
Reference:

Feasibility study on solution of redundant network component of the fault-tolerant scalable computing system of a special-purpose

Borodin Andrey Viktorovich

PhD in Economics

Professor, Department of Computer Science and System Programming, Volga State University of Technology

424000, Russia, respublika Marii El, g. Ioshkar-Ola, pl. Lenina, 3

bor@mari-el.com
ƒругие публикации этого автора
 

 

DOI:

10.7256/2306-4196.2015.6.17523

Review date:

09-01-2016


Publish date:

19-01-2016


Abstract: The research is devoted to architectural aspects of creation of fault-tolerant scalable computing systems of a special-purpose. In particular the study focuses on the principles of backup which can be used in a network subsystem of the computing system in the conditions of essential dependence of total cost of ownership of system on a level of degradation of performance metrics. Authors consider such approaches to backup as duplicating and a triple redundancy. For the principle of a triple redundancy in this research the new concept of the functional adaptation of elements of redundancy is offered. Special attention in the paper is paid to the dependence of a "Value at Risk" measure of risk, that characterizes by a random variable of total cost of ownership of the computing system and defines the greatest possible loss at the given level of probability, from such parameters of a system as number of the functional groups of hosts and a level of influence of single and group faults on degradation of performance metrics. For a risk process description in the computing system the notation of ordinary stochastic Petri nets is used. For computation of a measure of risk of "Value at Risk" on the given time-interval the methods of the algebraic theory of risk are used. The main result of the research is in proving the concept of productivity of a triple redundancy approach with the functional adaptation of elements of redundancy in the task of synthesis of topology of a network subsystem. The novelty of research consists in use of methods of the algebraic theory of risk in a task of synthesis of an optimum architecture of computing systems on the given discrete sets of possible decisions.


Keywords: willingness, availability, computer system, scaling, fault tolerance, reservation, feasibility study, triple redundancy, functional adaptation, Value at Risk
This article written in Russian. You can find full text of article in Russian here .

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