As we approach to the terabyte mark in consumer level products, Hitachi has announced it's about to unveil a massive hard drive designed to store corporate data or record about 400 hours of video for consumers, the drive weights in at 400GB at 7200rpm.

The company is billing the Deskstar 7K400 as the largest-capacity ATA drive with 3.5-inch platters. Currently, the largest 3.5-inch ATA drive is a 320GB product from Maxtor, according to John Monroe, an analyst at research firm Gartner. That drive, though, spins at 5,400rpm, which translates into slower performance than a 7,200rpm drive.