My harddrive as percentage volumes of a sphere

My harddrive - as a sphere, originally uploaded by kaioshin.

Not quite as intuitive, this.
Most people aren't used to thinking in volumes. For instance, tall bottles appear to have more liquid than short stocky ones.

Still, it makes the lower percentages more visible. Look at the 1% core. It's huge compared to the pie graph.

However, two 1% cores don't look similar. The next band is also 1%.

Maybe I should use relative scales and have clusters of spheres in 3D-space.

It's good to keep InfoDesign skills up-to-snuff between project, I reckon.