Title
A Hierarchical Model for Virtualized Data Center Availability Evaluation
Abstract
Availability events like hangs, failures, and interruptions are usually unexpected and unpredictable. Due to the involving uncertainty, setting up a consolidated approach for availability evaluation is a hard endeavor. The availability evaluation becomes even more complicated in complex systems like cloud computing. Previous works fill such a gap using availability models. However, the majority of those papers proposes models for specific scenarios, which impairs their scalability and flexibility. In this paper, we present a scalable availability model for virtualized datacenters. From the model's design point-of-view, we provide: i) a hierarchical model based on Reliability Block Diagrams and Stochastic Reward Nets, and ii) an evaluation of the time to compute the model's results. We tested different architectures regarding system availability, capacity-oriented availability, and power consumption. As our model considers the fundamental premises of virtualized environments, it can be extended to specific scenarios. We also used a multiple-criteria decision-making process to highlight the best architectures for different users' needs, considering system downtime, capacity-oriented availability, and power consumption.
Year
DOI
Venue
2019
10.1109/EDCC.2019.00029
2019 15th European Dependable Computing Conference (EDCC)
Keywords
Field
DocType
Availability,Virtualized Data Center,Hierarchical models,Stochastic Petri Nets,Cloud Computing
Complex system,Reliability block diagram,Computer science,Stochastic Petri net,Hierarchical database model,Data center,Downtime,Distributed computing,Cloud computing,Scalability
Conference
ISSN
ISBN
Citations 
2641-810X
978-1-7281-3930-2
1
PageRank 
References 
Authors
0.37
17
4
Name
Order
Citations
PageRank
Matheus Torquato120.73
Erico A. C. Guedes220.72
Paulo Romero Martins Maciel336359.24
Marco Vieira4971112.31