%0 Journal Article
%T A Note on Disk Drag Dynamics
%A Neil J. Gunther
%J Physics
%D 2012
%I arXiv
%X The electrical power consumed by typical magnetic hard disk drives (HDD) not only increases linearly with the number of spindles but, more significantly, it increases as very fast power-laws of speed (RPM) and diameter. Since the theoretical basis for this relationship is neither well-known nor readily accessible in the literature, we show how these exponents arise from aerodynamic disk drag and discuss their import for green storage capacity planning.
%U http://arxiv.org/abs/1201.6402v1