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The even crazier thing is big industrial plants where they are using tens or hundreds of MW and have much lower margins than datacenter companies, so they run with dual grid (HV, sometimes like 132kV) feeds and no onsite redundancy. As in, when the grids flicker, they lose $20mm of in-progress work.



I'd guess that's because "tens or hundreds of MW" of on-site backup power would be _ludicrously_ expensive to own/maintain, and the tradeoff against the risk of both ends of their dual grid flickering at once and trashing the current batch is less expensive. (or maybe the power supply glitches are insurable against, or have contract penalty clauses with the power companies?)




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