eh?
There's been a 2.5" 1TB drive for ages
http://www.novatech.co.uk/novatech/prods/Components/HardDrives-External/USB/WesternDigital/WDBABM0010BBK-EESN.html
Seagate is developing a 3TB disk drive which could hit the market this year. According to people familiar with the company's plans, a 3TB Constellation ES drive with a 6Gbit/s SAS interface will arrive later this year. The Constellation ES is a replacement for the Barracuda ES and is, Seagate says, an enterprise class drive, …