N
N is the base amount of capacity or equipment needed to support the design load. Redundancy expressions like N+1 and 2N only make sense after defining the load, component boundary, operating mode, and failure scenario.
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Cooling and Water
Cold aisle
Cold aisle is the aisle supplying cooled intake air to IT equipment. Cold-aisle management matters because server inlet temperature, airflow, and containment drive reliability and cooling efficiency.
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Conditional use permit
Conditional use permit is similar to special use permit and authorizes a use subject to conditions designed to address local impacts. Terminology varies by jurisdiction, so the local code controls.
Read definition →Deliverable power
Deliverable power is the amount of power that can actually be served to a site at the required reliability, voltage, timing, and cost. For powered land, deliverable power is the critical distinction between a marketing claim and a financeable site.
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