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National Taiwan University of Science and Technology, Taiwan, Province of China

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UPC Broadband Slovakia, Slovakia

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Brno University of Technology, Czech Republic

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Brno University of Technology, Czech Republic

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Ankara University, Turkey

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Institute of Medical Technology and Equipment, Poland

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VSB - Technical University of Ostrava, Czech Republic

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Academy of Sciences of the Czech Republic, Czech Republic

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University of Defence, Czech Republic

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Wroclaw University of Science and Technology, Poland

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Technical University of Radom, Poland

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Technical University of Kosice, Slovakia

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University of Economics in Katowice, Katowice, Poland

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Honeywell International, Czech Republic

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Brno University of Technology, Czech Republic

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Delhi Technological University, India

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Shantou University, China

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VSB - Technical University of Ostrava, Czech Republic

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Tomas Bata University in Zlin, Czech Republic

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Technical University of Cluj Napoca, Romania

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National Research University "MPEI", Russian Federation

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Guanajuato University, Mexico

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University of Pardubice, Czech Republic

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University of West Bohemia in Plzen, Czech Republic

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Technical University of Cluj Napoca, Romania

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Warsaw University of Technology, Poland

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Isfahan University of Technology, Iran, Islamic Republic Of

Mauro Tropea
DIMES Department of University of Calabria, Italy

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Academy of Sciences of the Czech Republic, Czech Republic

Jiri Vodrazka
Czech Technical University in Prague, Czech Republic

Miroslav Voznak
VSB - Technical University of Ostrava, Czech Republic

He Wen
Hunan University, China

Otakar Wilfert
Brno University of Technology, Czech Republic


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Availability Model for Virtualized Platforms

Jiri Hlavacek, Robert Bestak

DOI: 10.15598/aeee.v11i5.905


Abstract

Network virtualization is a method of providing virtual instances of physical networks. Virtualized networks are widely used with virtualized servers, forming a powerful dynamically reconfigurable platform. In this paper we discuss the impact of network virtualization on the overall system availability. We describe a system reflecting the network architecture usually deployed in today’s data centres. The proposed system is modelled using Markov chains and fault trees. We compare the availability of virtualized system using standard physique network with the availability of virtualized system using virtualized network. Network virtualization introduces a new software layer to the network architecture. The proposed availability model integrates software failures in addition to the hardware failures. Based on the estimated numerical failure rates, we analyse system’s availability.

Keywords


Availability model; continuous-time Markov chains; network virtualization; server virtualization.

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