Modeling and Analysis of Cloud Computing Availability Based on Eucalyptus Platform for E-Government Data Center

Data center is required for the enterprise, cloud service providers such as Amazon Web Service and Microsoft Azure offer enterprises the ability to store their data remotely on rented hardware per demand. But designing cloud infrastructure in term for securing the data is one of the most concerns that enterprise worries about it. Cost reduction and providing the features as per the demand are the main operation of cloud computing. There are two main components that the cloud systems require, they are scalable infrastructure and scalable data platform. In this paper, we propose a private cloud, one among the suitable cloud environments for e-government data center, with a modeling of the cloud computing based upon the Eucalyptus architecture. To understand the behavior of Eucalyptus, we consider Ubuntu Enterprise Cloud (UEC) as reference architecture for our Cloud Test bed environment in our Lab. With UEC architecture, we address the availability of each component of the cloud base on Markov chain through the level analysis of hierarchical available model (HAM).