This paper presents a detailed quantitative efficiency comparison between the most efficient DC and AC power distribution methods, including an analysis of the effects of power distribution efficiency on the cooling power requirement and on total electrical consumption.
Surprise incidences of downtime in server rooms and remote wiring closets lead to sleepless nights for many IT managers. This paper analyzes several of these incidents and makes recommendations for how a basic monitoring system can help reduce the occurrence… Read more »
This white paper assesses the various effects of virtualization and possible solutions or methods for dealing with them are offered.
This paper explains how to plan for DCPI when deploying medical imaging and diagnostic equipment, with emphasis on power and cooling.
This paper explains how to plan for DCPI while deploying indoor WLANs in small, medium or large enterprise, with emphasis on power and cooling. Simple, fast, reliable, and cost effective strategies for upgrading old facilities or building new facilities… Read more »
UPS systems below 5000 VA are available in two basic designs: line-interactive or double-conversion on-line. This paper describes the advantages and disadvantages of each topology and addresses some common misconceptions about real-world application requirements.
Small data centers and network rooms vary dramatically in regard to the amount of uninterruptible power supply (UPS) runtime commonly deployed. This paper describes a rational framework for establishing backup time requirements. Tradeoffs between supplemental UPS batteries and standby generators are discussed, including a total cost of ownership (TCO) analysis to help identify which solution makes the most economic sense. The analysis illustrates that the runtime at which generators become more cost effective than batteries varies dramatically with kW and ranges from approximately 20 minutes to over 10 hours.