Business Green: One of the leading providers of green datacentre technologies in the US, Rackable Systems, has revealed plans to launch operations in Europe as it seeks to tap into expanding demand for energy efficient server systems. Speaking to BusinessGreen.com, Rackable Systems’ recently appointed managing director for the region, Rod Evans, said that the company would open an office in the UK in the next few months and then look to open a second office in northern Europe in late 2009 or early …