"When you've just been decelerating at 200 g's for 1.5 msec, you've excited every vibration mode that the actuator knows about. The whole thing wants to ring like a bell. And despite the attempts of us mechanical men to make everything stiff, it's in the nature of metals to ring!" - Sanjeev Singh

A very interesting article on hard disk design that I will read fully some day. :) - Sanjeev Singh