Time for a serious Windows Home Server upgrade... 8x Seagate 3TB Barracuda drives in RAID 6. Watch the video for configuration tips and performance benchmarks at the end... HUUUUGE numbers.
CA: http://ncix.com/search/?categoryid=0&q=seagate+barracuda
US: http://us.ncix.com/search/?categoryid=0&q=seagate+barracuda