TITLE:
Availability Importance Measures for Virtualized System with Live Migration
AUTHORS:
Junjun Zheng, Hiroyuki Okamura, Tadashi Dohi
KEYWORDS:
Virtualized System, Live Migration, System Availability, Component Importance Analysis, Fault Tree, Continuous-Time Markov Chain
JOURNAL NAME:
Applied Mathematics,
Vol.6 No.2,
February
10,
2015
ABSTRACT: This paper presents component importance analysis for virtualized system with live migration. The component importance analysis is significant to determine the system design of virtualized system from availability and cost points of view. This paper discusses the importance of components with respect to system availability. Specifically, we introduce two different component importance analyses for hybrid model (fault trees and continuous-time Markov chains) and continuous-time Markov chains, and show the analysis for existing probabilistic models for virtualized system. In numerical examples, we illustrate the quantitative component importance analysis for virtualized system with live migration.