GPU clusters run at sustained full load. Power draw per rack has climbed from 10 kW to 130 kW and above — and it does not fluctuate the way enterprise IT does. When the UPS architecture was not designed for that load profile, the failure modes are predictable.

This guide covers how availability is calculated across GPU clusters, why centralised UPS control logic fails specifically under correlated AI load conditions, and how to evaluate redundancy architecture before you specify. It includes five questions to ask any UPS vendor — and a framework that applies regardless of who you’re evaluating.

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