Papia Lahiri, Ishta Vohra, Durba Ghosh New Delhi IN the wake of global warming and concerns over environmental degradation, companies are integrating green agenda into their business models. The concept of Green-IT is awakening India Inc to IT's responsibilities IT towards environment conservation. More than 500 million computers became obsolete worldwide by the end of 2007, while energy consumption from data centers touched 123 kWh. "The concern is now to make IT infrastructure energy efficient,'' Suresh Menon,head, storage business, Dell India, observed at the IT conclave.