The Japanese hard drive maker Hitachi Global Storage Technologies is planning to have a 3.5-inch hard drive on market that has 5TB capacity. The highest capacity hard drive available today is 1TB, if Hitachi achieves its goal of 5TB in 2010, they would effectively increase the hard drive capacity by 5X in just two years. To achieve this the company will use a new write head technology called perpendicular-to-the-plane giant magnetoresistance or CPP-GMR. This would pushes data density above 1TB per square inch delivering hard drives many times larger than those available today. Hitachi’s Yoshihiro Shiroishi said, “By 2010, just two disks will suffice to provide the same storage capacity as the human brain.” Now my only question is who calculated that Human Brain has just 10TB storage capacity.