Total cost of ownership for real world power protection infrastructure comparing centralized vs. distributed vs. power systems

• Autorzy: Christin J. F.
• Języki publikacji: EN

Abstrakty

EN

UPS manufacturers follow the IT culture, used to deal with modular and versatile equipment. A question then arises: should the power protection be distributed (installed in the rack or centralized (in an electrical room). A centralized system is faster to implement. It requires a cheaper and smaller area per kW. Rightsizing centralized power from the beginning facilitates "plug-and-play" IT installations. The efficiency is better optimized, centralized UPS having lower losses cooled by cheaper air-conditionning. A centralized UPS provides better reliability and cost / MTBF ratio: a four 25 Watts light bulbs will cost more compared to one 100 Watt light bulb. Human factor is also to consider when it comes to monitoring and maintaining UPS: distributed UPS are typically managed by IT personnel, untrained for this task. A centralized UPS with a 7x24 service adds to uptime far more than it might add to total cost of ownership. The battery also advocates for a centralized UPS: it is the weakest link in any UPS system. A centralized UPS with a single well-monitored battery allows a longer battery life expectancy. When the total costs of ownership is considered, the savings of a centralized UPS installation are considerable.

Słowa kluczowe

EN

TCO; UPS; reliability; power protection; power efficiency

• Wydawca: AGH University of Science and Technology
• Czasopismo: Electrical Power Quality and Utilisation. Magazine
• Rocznik: 2005
• Tom: Vol. 1, nr 1
• Strony: 5--10
• Opis fizyczny: Bibliogr. 3 poz.

Twórcy

autor

Christin J. F.

• MGE UPS Systems, Technical Marketing Manager for Europe, France

Bibliografia

• 1. Cougias, D. Heiberger, E. L. Koop: The back up Book: disaster recovery from desktop to datacenter (3rd ed.) Chicago: Schaser-Vartan books, 2003.
• 2. EPRI (2003) Life cycle cost analysis of power quality mitigation devices (N° 00000000 01001674) Electric Power Research Institute.
• 3. Miseta E.: Protect Entire Datacenter with Single Power Supply. Business Solutions (2004, June 2004), 19, 80-81.