SA based software deployment reliability estimation considering component and host node dependences

System deployment architecture can have a significant impact on its reliability. Although many approaches for architecture-based reliability estimation exist, little work has been dong in incorporating the influence of system deployment architecture and hardware resources. This paper proposes a novel approach to estimate system reliability at architecture level, incorporating the influence of deployment architecture and hardware resources. Additionally, we give the definitions of component dependence and host node dependence. On the basis of matrix of dependence degree among components and matrix of dependence degree among host nodes, we optimize greedy algorithm to deploy software components onto host nodes. Finally, we calculate system reliability of the deployment architecture.