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Tag Archive 'UPS'

What does Power Factor mean in a UPS?

Posted in Generic, Power on Oct 15th, 2008

If someone looks for Power Factor (p.f.) value in a UPS data-sheet, he will find two values: input and output.
What do they mean? Isn’t the load that defines the p.f.?
Focusing on the IT loads even if the concept is general, the first thing to understand is that the server is the load for the UPS […]

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Virtualization applications and physical machines shut down

Posted in Power on Jul 25th, 2008

Server virtualization in Datacenters is one of the most implemented solution to make optimized utilization, improve efficiency and reduce consumption of the phisical infrastructure. While it is clear and well known to everybody what are the advantages of Virtualization from the IT point of view, the effects of virtualization on the physical layer of the […]

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The European Data Centre Code of Conduct

Posted in Air Conditioning, Power, Security on Apr 11th, 2008

Last wednesday 9 April 2008 I have attended the European Datacentre Code of Conduct meeting in London. It was so amazing to see how much interest exists among Datacentre industry stakeholders on this initiative. At the London meeting, the fourth since March 2007, when the CoC started, we were more than 50 attendees coming from […]

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Redundant distribution to reach Tier IV requirements

Posted in Power on Apr 11th, 2008

Tier classification for Data Centres infrastructure is proposed by the Uptime Institute. The nowaday configuration that ensures the highest Availability is the Tier IV.
Purpose of this post is to show a simpler alternative scheme that can reach the Tier IV requirements. Such topology must used for every power distribution subsystem in the Data Centre.
The main […]

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