It won’t be long now before 3 Terabyte hard drives will roam the earth. Seagate is currently developing 3TB drives with transfer speeds of 6GB per second and spinning at 7200 rpm. This is made possible by the development of 640GB and 750GB drive platters, up from the current 500GB. A 2TB hard drive is made up of 4 x 500GB platters. A 3TB hard drive equates to 4 x 750GB platters. Also, you will see in the upcoming months improvements in 2.5 laptop hard drives with the development of the 1TB drives.