TL;DR
This paper analyzes how aerodynamic disk drag influences power consumption in HDDs, revealing power-law relationships with speed and diameter to aid green storage planning.
Contribution
It derives the exponents governing power-law relationships from aerodynamic principles, providing a theoretical basis for HDD power consumption modeling.
Findings
Power consumption increases as a power-law with RPM and diameter.
Derived exponents from aerodynamic drag explain observed power scaling.
Highlights importance for energy-efficient storage design.
Abstract
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.
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Taxonomy
TopicsAdvanced Data Storage Technologies · Characterization and Applications of Magnetic Nanoparticles