Solid state drives use far less power than hard disc drives. But a new study unexpectedly reveals that their lifetime carbon footprint is much higher than their hard disc cousins, raising difficult questions for the computer industry.
Solid State Drives are integrated circuits that store data without any moving parts. By comparison, hard disc drives store information on a rotating magnetic disc. Because of this simplicity, SSDs have revolutionized the form and function of computing devices. Smartphones, for example, rely on SSDs.
But all is not as it seems, say Swamit Tannu at University of Wisconsin in Madison and Prashant Nair at the University of British Columbia in Vancouver. SSDs have a dirty secret. But SSDs are significantly more carbon intensive to manufacture. That’s because the chip fabrication facilities for SSDs operate at extreme temperatures and pressures that are energy intensive to maintain. And bigger memories require more chips, which increases the footprint accordingly.
That’s a counterintuitive result with important implications. At the very least, it suggests that computer manufacturers and cloud data storage operators should reconsider the way they use SSDs and HDDs.
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