Hitachi has begun shipping the world's first 1Tb (Terabyte) hard drive. 

The Deskstar 7K1000 went out to retailers and e-tailers in March 2007 with inventories reaching critical mass in April 2007.
Announced at CES 2007, the Hitachi Deskstar 7K1000 hard drive delivers superior performance and reliability, as well as leadership capacity, to meet the needs of consumers who want to create, share and store their digital information in ever increasing volume.
At a suggested retail price of $399 (USD), massive storage capacity is more affordable than ever before.
The Deskstar 7K1000 hard drive delivers ultra-high capacity, which is well-suited for high-performance, gaming and media center PCs and external storage devices. It is built on the industry’s most reliable perpendicular magnetic recording technology, allowing Hitachi to extend capacity beyond that available in current products.
The hard drive features a 3Gbps Serial-ATA (SATA) interface and large 32 Mb data buffer to provide the performance required for high-end PC applications.
“Delivering the one-terabyte hard drive this year is a monumental achievement not only for Hitachi and the hard drive industry, but also for the end user," says Shinjiro Iwata, chief marketing officer, Hitachi Global Storage Technologies.
"Consumers’ desire to create and share digital entertainment is the primary accelerator for capacity and performance increases in desktop PC hard drives. We are proud of the strength of the Deskstar 7K1000 as it designed to meet the requirements of PC enthusiasts."
The Deskstar 7K1000 hard drive is built using a five-platter design with relaxed areal density for greater reliability. To further ensure data integrity, the hard drive features a ramp load/unload design to increase shock protection and Thermal Fly-height Control (TFC) to maintain a consistent fly-height during the read/write process.