A disk drive includes a base, a spindle motor attached to the base, the
spindle motor including a hub having hub apertures, a plurality of disks
on the spindle motor and including a first and a second disk, a disk
spacer between the first and second disks, and a disk clamp. The disk
spacer has a plurality of spacer through apertures. Each of the spacer
through apertures extend radially through the disk spacer. The disk clamp
has clamp through apertures adjacent to an inner diameter of the disk
clamp. Each of the clamp through apertures extend longitudinally through
the disk clamp. The clamp through apertures, the hub apertures and the
spacer through apertures are aligned for allowing airflow to pass through
the apertures when the disks are rotating.