On traditional dairy farms, farmers might milk about a dozen head by head, while other Amish use mechanicalmeans to maintain herds that are 10 times larger.
And for big volumes of data, the current technology is known as mechanical disk a disk that lets people store and retrieve information by means of an arm that moves over specific sections of the disk.
The lower density means dramatically less drag force acting on the spinning disk stack so that mechanical power into the motor is substantially reduced.