รายละเอียดเอกสาร

This chapter provides some basic information about datacom facilities, the fundamentals of their designs, and where to find additional information. Datacom facilities treat space, power, cooling, and networking (formally or informally). Each service can have a service-level agreement (SLA), but the services are highly interdependent. Therefore, overall reliability/availability is best achieved when all aspects of these services are designed together, with the same performance goals. In short, a datacom facility is a system, in every sense of the word, and all facets interrelate and affect each other in one way or another. Therefore, this chapter also includes information on facility elements such as power, lighting, and fire protection that are not strictly HVAC, but which can affect the cooling load, system performance, or both if not recognized as critical elements in the design phase and fully coordinated with each other. Because of the high power and heat densities, it is becoming increasingly necessary to cool computing equipment with liquid approaches, either instead of or in combination with air. Further, it is becoming increasingly popular to provide metering for services at each service interface point, with centralized monitoring of the infrastructure. This data center infrastructure monitoring (DCIM) approach has become an almost mandatory additional requirement for modern datacom facilities.