History of Computers - The Terabyte Hard Drive

In 2006 one of Hitachi's hard disk testing labs began testing perpendicular magnetic recording. What they found led them down the path to much larger hard drives then anyone had ever seen, specifically the first terabyte hard drive in early 2007.

Inside the Hard Drive

Overview

A hard drive reads and records information off of stacked disks called platters. The way information is stored is a magnetic charge is either put in or read from the metal disks. This allows the data to stay present on the hard drive even when a computer is off. The size of the hard drive depends on the amount of particles measured in bits per square inch that can be magnitized. Until now the platters have been longitudinal recording. Hitachi has been thoroughly investigating the advantages of perpendicular magnetic recording (PMR) since 2006. It has allowed them to raise the areal density in each of their platter

External Links

http://www.pcworld.com/article/124925/a_faster_denser_hard_drive_debuts.html

References

http://www.photographyblog.com/index.php/weblog/comments/hitachi_1_terabyte_hard_drive_in_2007/

Page Creator: Bowden Kelly