Int J Performability Eng ›› 2018, Vol. 14 ›› Issue (3): 473-782.doi: 10.23940/ijpe.18.03.p8.473482

• Original articles • Previous Articles     Next Articles

State-Control-Limit-Based Rejuvenation Modeling of Virtualized Cloud Server

Weichao Danga, b and Jianchao Zengb, c   

  1. aCollege of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
    bDivision of Industrial and System Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, China
    cSchool of Computer Science and Control Engineering, North University of China, Taiyuan, 030051, China


Software rejuvenation modeling of the virtualized Cloud Server has been studied. A software rejuvenation policy on the virtual machines and the virtual machine monitor has been proposed in order to ensure high availability of the virtualized Cloud Server. The multi-component system, composed of the virtual machines and the virtual machine monitor, which are structurally dependent, has been reduced to the multiple two-component systems. The state-control-limit-based rejuvenation policy has been proposed and the stationary probability density of the two component system state has been derived. Furthermore, the stationary unavailability of the virtualized Cloud Server has been modeled. Numerical experiments have verified the correctness of the probability density function and the feasibility of the rejuvenation policy. The state-control-limit-based rejuvenation policy leads to lower unavailability of the virtualized Cloud Server in comparison with the lifetime-based rejuvenation policy.

Submitted on November 15, 2017; Revised on January 21, 2018; Accepted on February 19, 2018
References: 21