The first 1TB HDDs from Hitachi are already available in retail stores in Japan. The guys from X-bit labs report the Hitachi Deskstar 7K1000 HDS721010KLA330 is selling for ¥51 500 - ¥55980 ($433 - $470):
Hitachi’s Deskstar 7K1000 HDS721010KLA330 model features five 250GB platters and ten heads, has 7200rpm motor as well as 32MB data buffer. The manufacturer claims that the drive has 8.5ms read seek time, 9.2ms write seek time and 1070Mb/s (133.75MB/s) maximum media transfer rate. Currently the company ships 1TB hard disk drive with Serial ATA-300 interface, but a model with Parallel ATA interface is also expected to be available.
Hitachi’s 1TB hard disk drive indisputably represents a milestone in desktop storage, as only ten years ago the world’s most capacious hard disk drive was 16.7GB IBM Deskstar, whereas 1GB landmark in desktops was achieved in 1995. But, it appears, end-users will have to pay a significant premium to acquire the product that reached 1TB milestone.
In the U.S. this drive should become available for about $399.