It is also a vital component of high-voltage wires, magnetic coatings for high-density hard disk drives, fiber optics, fiberglass, catalytic converters and spark plugs.
The lower density means dramatically less drag force acting on the spinning disk stack so that mechanical power into the motor is substantially reduced.
Simplified, higher density and more reliable servers make the hyperscale all-flash datacenter more efficient than datacenters based on solid state disk and hard disk systems.