Standards bodyTier IIIA published standard from Standards body, referenced across the Anvilfield field guides below.Referenced across 6 Anvilfield field guides. Field guides that apply Tier IIIDatacenterDatacenterData center MOP SOP EOPDatacenterData center PM programDatacenterData center tier classificationDatacenterData center types field guideDatacenterLiquid cooling concurrent maintainabilityDatacenterUPS topology and redundancy design Often cited alongsideUptime InstituteTier IVTIA-942Tier IASHRAE TC 9.9NFPA 70ENFPA 110NFPA 70B Compare your optionsN+1 redundancy vs 2N redundancyOnline double-conversion UPS vs Line-interactive UPS Browse all codes and standards