Hitachi Data Systems introduce in this presentation cost effective steps to building More Eco-friendly Data Center. Hitachi Data Systems Green Storage Solutions include new technologies like Virtualization and Consolidation, Tiered storage solutions and De-duplication, Dynamic provisioning and Virtualized external storage systems. Deployment of these technologies brings not only significant saving of investments but also operational savings connected with power consumption, cooling, space reductions and others. Target of the Eco-friendly Data Center project is to reduce energy cost by 50 % over the next 5 years. We will demonstrate at the end of this presentation an example of the real Green Data Center which Hitachi opened in Yokohama, Japan in August, 2009. The newly opened green facility incorporates power-efficient data center technology designed to achieve a benchmarking rating of 1.6 PUE (Power Usage Effectiveness) Green Grid rating - the lowest power usage index of any data center in its class while offering among the industry’s highest level of reliability, availability and data security.