Following the launch of Apple’s 120GB iPod classic and a matching-capacity Zune, Toshiba has announced two new 1.8-inch hard drives aimed at ultra-mobile PCs and portable media players. The largest of the drives is a dual-platter 240GB product, followed by a single-platter 120GB model.

The new drives from Toshiba not only boast record capacities, but also set the world’s record in terms of areal density at 344 GB per square inch. Both drives are capable of achieving 4,200 revolutions per minute, feature parallel ATA interfaces, and significantly optimize energy efficiency and reduce power consumption compared to older models. The new devices are expected to be incorporated in consumer electronics and mobile PC products shipping this holiday season.