← All glossary terms

Sustainability, Risk, and Reporting

Downtime

Downtime is time when a system or service is unavailable under the applicable definition. Downtime cost can include lost revenue, SLA credits, customer churn, operational disruption, and reputational damage.

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Liquid cooling

Liquid cooling removes heat using liquid closer to the IT components than traditional room air cooling. It is increasingly important for AI workloads because rack power densities can exceed practical air-cooling limits.

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Energization

Energization is the point when electrical facilities are made live and capable of receiving or delivering power. It is not the same as commercial operation, commissioning completion, or ready-for-service under a lease.

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Building permit

Building permit is local authorization to construct, alter, or occupy structures under building code review. For data centers, building permit packages must coordinate architecture, structural, electrical, mechanical, fire protection, and equipment loads.

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