What is Kryder's Law?

Kryder's Law is the assumption that disk drive density, also known as areal density, will double every thirteen months. The implication of Kryder's Law is that as areal density improves, storage will become cheaper.

The term stems from a 2005 article published in Scientific American titled "Kryder's Law," which featured an interview with Mark Kryder, former senior vice president of research and chief technology officer of Seagate Corporation. Kryder's Law is often compared to Moore's Law and is sometimes referred to as the "Moore's Law of storage."  (Moore's Law proposed that the number of microcomponents that could be placed in an integrated circuit would double every year.)

Many analysts argue that while the general trend of disk density increasing exponentially holds true, Kryder's Law is a sweeping generalization that cannot be applied to all segments of the storage market and will not hold up as storage technology evolves. Instead, Kryder's Law -- like Moore's Law -- should be viewed as a snapshot of a technology's evolution at a specific point of time.