Live-load UPS failure at a Tier III colocation — 41-minute recovery
A parallel-redundant UPS system tripped one leg mid-week under a busy AI-training load. The customer's own night crew hit the escalation ceiling; a redundancy loss on the surviving leg would have taken down 6 MW.
Two of our P1 engineers were on site within 41 minutes with pre-staged spares. Isolated the failed module, verified capacitance and transfer switch health, restored redundancy — all without cutting IT load.
