Hitachi Japan today announced the Ultrastar C10K300 [JP, PDF], a 10k RPM HDD that will be sold mainly to businesses as 147GB and 300GB versions starting today (worldwide). The 6Gbp/s SAS HDD boasts double the data throughput when compared with the previous model that featured 3Gbp/s.

Hitachi says they managed to squeeze the new drive in a 2.5-inch housing (70.1×100.6×14.8mm, weight: 227g), which is 70% smaller than other devices. The company also claims the Ultrastar C10K300′s power specification of 3.4 watts in idle and 6.1 watts in active operating mode is superior in the industry.