Why AI data centers are using more Hard Drives than SSDs

Our Take

Speedify's breakdown is a useful reminder that the AI boom isn't just chips and cooling towers — it's rows upon rows of spinning disks, racked by the petabyte, because cheap-per-gigabyte density beats speed when you're training models on oceans of data. That sounds like an engineering footnote, but it's really a supply chain and land-use story. Every one of those HDD racks needs floor space, power, and climate control, and "cost and density matter more than speed" is exactly the calculus that's driving hyperscalers to build ever-bigger warehouses in places that offered them tax breaks to do it.

The video frames this as a hardware trend, and it is, but it's worth asking what a projection like "80% of hyperscale storage through 2028" actually means on the ground: more square footage, more transformers, more water for cooling all that gear running 24/7. None of that shows up in a spec sheet comparing HDDs to SSDs, but it shows up in your utility bill and your local watershed.

We'd rather people understand storage economics than not, and credit to Speedify for making it accessible. But the bigger question for our readers is who's approving the buildings full of these drives near them, and on what terms. Check our facility map to see if one's coming to your backyard, and if it is, our take-action page has what you need to start asking questions before the concrete's poured.