Modeling and Analyzing Availability, Cost and Sustainability of IT Data Center Systems.

Data center has evolved dramatically in the past few years, and this change has to do with the advent of cloud computing and the massive increase of data due to the Internet of Everything. This new paradigm demands high availability with low costs, which represents conflicting requirements. Approaches to conduct an integrated evaluation of availability, cost and sustainability of IT (Information Technology) data center systems are not trivial. This paper proposes a set of models for estimating these metrics. A case study is conducted to illustrate the applicability of the proposed models for analyzing IT data center systems. The results revealed that we were able to upraise the availability over 70% with a small increase on the cost (around 15%) and on the sustainability (5%).