Climate protection needs energy efficient data centers - Stulz GmbH

8 Glossary19“-CabinetBPSBrineChillerCPUCRACCWData CenterDXEMCEmissionEPSEUHot spotsIICTIGBTILMImmissionITKVM switchLV main distributionModularMV main distributionNPSParallel operationPower distributionPrecision air conditionerPSURRedundantScalableSNMPSPSPSSTSSurge protection conceptTCOUPSRack with approx. 40 U, overall height approx. 2 metres, installation width 483 mm, installationheight is measured in rack units (U), 1 U = 44.45mmback-up power systemwater/glycol mixturewater cooled unitcentral processing unitcomputer room air conditioningchilled water; air-conditioning units which use cold waterserver room and /or data centerdirect expansion; refrigerant-type air conditioning unitselectromagnetic compatibilitythe release of substances into the atmosphere from a resource or processemergency power supplyelectric utilitylocal overheatinginverterinformation and communication technologynsulated gate bipolar transistorinformation lifecycle managementthe reception of material, such as pollutants, by the environment from any sourceinformation technologykeyboard-video-mouse switchlow voltage main distributiona system constructed of several individual units (sub-assemblies)medium voltage main distributionnormal power supplytwo or more UPS units which combine to supply the connected loadsalso main LV distribution panel (LVDP) or PDU (power distribution unit)air conditioning unit which can maintain both temperature and humidity at constant levelspower supply unitrectifiermultiple configuration for increasing availability (fault tolerance)capable of adapting to demandsimple network management protocolsub panelsmart (“intelligent”) power stripsstatic transfer switch / static transfer systemconventional overvoltage protection includes coarse, medium and fine protectiontotal cost of ownershipuninterruptible power supply38