The ultrastar a7k2000 provides twice the data storage capacity of the prior generation ultrastar a7k1000 drive and does so using fewer watts operating at 7200 rpm the hitachi ultrastar a7k2000 offers better overall performance than slower rpm capacity oriented drives at impressively low power consumption rates when compared to the previous generation ultrastar a7k1000 the a7k2000 offers up to a 155 improvement in sustained data transfer rate and a 120 improvement in watts per gb with f