Patent ID: 7031104

Claim:
A disk drive comprising: an enclosure having a base and a cover; a disk that rotates about an axis within the enclosure, the rotating disk having an axis of rotation and a magnetic medium formed on at least one surface thereof, the rotating disk creating airflow within the enclosure; an actuator arm that positions a data transfer head proximate the surface of the disk; and a plurality of arcuate channels located on a face of the enclosure that is approximately parallel to the at least one surface of the disk, each of the plurality of arcuate channels being disposed within said airflow and comprising two arcuate adjacent walls and a channel base that is located between the two arcuate adjacent walls, each of the arcuate adjacent walls being oriented concentrically about the axis of rotation of the disk, and each of the arcuate adjacent walls extending closer to the at least one surface of the disk than does the channel base.