Only weeks after Western Digital introduced its spacious 4TB My Book Studio Edition II Drive, the company is putting itself back in the spotlight with a new dual-drive My Book World Edition II Network Storage System. Basically, it’s WD’s fancy way of saying that it has a new NAS drive, one with room for twin HDDs and up to 4TB of capacity.The device ships with its dual 2TB hard drives in a mirrored (RAID 1) configuration, providing users with 2TB of useable space that is continuously backed up in case one of