Availability Analysis and Improvement of Software Rejuvenation Using Virtualization

Thandar Thein (), Sung-Do Chi () and Jong Sou Park ()
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Jong Sou Park: Computer Engineering Department, Korea Aerospace University, Seoul, Korea

Economics and Applied Informatics, 2007, issue 1, 5-14

Abstract: Availability of business-critical application servers is an issue of paramount importance that has received special attention from the industry and academia. To improve the availability of application servers, we have conducted a study of virtualization technology and software rejuvenation that follows a proactive fault-tolerant approach to counter act the software aging problem. We present Markov models for analyzing availability in such continuously running applications and express availability, downtime and downtime costs during rejuvenation in terms of the parameters in the models. Our results show that our approach is a practical way to ensure uninterrupted availability and optimize performance for even strongly aging applications.

Keywords: Software aging; Software rejuvenation; Virtualization; Availability; Markov process (search for similar items in EconPapers)
Date: 2007
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