Business Green: Green IT systems have moved past the stage of marketing hype and are a genuine business imperative for many firms, according to a major new European survey which found that almost half of large UK IT departments now have a green IT strategy in place. The survey of more than 450 Western European firms, each boasting more than 1,000 staff and at least one datacentre, was carried out by analyst firm IDC and found that IT departments in the UK and Germany had the most progressive attitude …