Nowadays, computer networks are critical to the success of small and large businesses. They connect people, support applications and services, and provide access to the resources that keep the businesses running. Our work proposes analytical models and a methodology for supporting the optimization of the network infrastructure design, considering both technical and business oriented metrics, such as availability, reliability, and total cost. The integration of communication and power infrastructures is supported by this methodology. The dependability (availability/reliability) models were created using the Reliability Block Diagram and Stochastic Petri Net modeling mechanisms following a hierarchical approach. A case study considering the design of a real-world network infrastructure is presented to illustrate the proposed methodology. The results showed a significant reduction in the design complexity as well as an improvement in the relationship between technical and business aspects.

中文翻译：

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考虑通信和电力基础设施集成的计算机网络设计优化分析方法

如今，计算机网络对于小型和大型企业的成功至关重要。它们连接人员，支持应用程序和服务，并提供对保持业务运行的资源的访问。我们的工作提出了支持优化网络基础设施设计的分析模型和方法，同时考虑了面向技术和业务的指标，例如可用性、可靠性和总成本。这种方法支持通信和电力基础设施的集成。可靠性（可用性/可靠性）模型是使用可靠性框图和随机 Petri 网建模机制按照分层方法创建的。提出了一个考虑现实世界网络基础设施设计的案例研究，以说明所提出的方法。