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The PUE Factor

May 8, 2009 4:53 PM

If you are in the data center business, get to know PUE: Power Usage Efficiency. PUE is a measure of how much additional electrical power is needed for cooling to deliver computing power. A PUE of 1 means all power being used for computing and none for cooling.

A 2007 US EPA survey put the PUE for your average data center at 2.

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Energywise- Another Cisco Lock-in

May 4, 2009 6:27 PM

I wrote awhile back that there were three problems with Energywise:
1) It is a security breach waiting to happen.
2) Apps should run on IP networks not be slave to them.
3) Painting Cisco switches with EnergyWise paint doesn't make them any more energy efficient. The Cisco Energy Tax lives on.

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Greenroots is Nortel's new blog devoted to all things green!

Think Green on St. Patty's Day

March 17, 2009 8:10 AM

Back in August, I highlighted the walkstation. Now a potential competitor has emerged.

All you need is pedals to turn this slick ergonomic PC chair into a green-friendly workstation!


EnergyWise is Another Cisco Lock-in

March 9, 2009 2:20 PM

Previously, I highlighted three problems with Cisco's EnergyWise:
1) security vulnerabilities,
2) it's should be an app, and
3) it doesn't make Cisco switches any more efficient.

Now Art Wittmann has raised the very valid concern that it's proprietary to Cisco and its few partners. He observes "So if you happen to be a Cisco, Schneider, SolarWinds, or Verdiem shop--lucky you!" But if you're one of these and want to change, you have just been locked in. And if you're not one of these, you have just been locked out.

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No argument for me: Green IT is critical important for Profit, People and Planet..

There're three problems with Cisco's EnergyWise.

Firstly, EnergyWise is a security breach waiting to happen. Do you want your network to be powering down your call server, or contact center or security cameras?

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Vehicular Ad Hoc Mesh Networking

January 28, 2009 6:01 PM

Hyperconnectivity includes all sorts of mobility modes and networking technologies.

I recently heard a BBC interview with Giovanni Pau of UCLA. He was discussing an innovative wireless mesh networking technology that he has deployed in a number of vehicles across the UCLA campus.

What he demonstrated was car-to-car video conferencing system, though perhaps this isn't the best example of how this technology could be used.

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Triple Bottom Line: Profit, People, Planet

January 26, 2009 11:55 AM

The Triple Bottom Line (3BL) captures an expanded spectrum of CXO criteria for measuring organizational success: Profit, People and Planet".

This comes from some UN work and is being adopted by governments around the world, perhaps even in your community.

It's both an accounting principle and a general philosophy.

40% reduction in energy consumption with Nortel Ethernet campus and data center solutions is a significant step towards the Triple Bottom Line.

Hyperconnectivity drives powering needs as everything and everyone gets connected and as server farms expand to meet the demand.

A to-be-published Nemertes survey report finds that 23% of US CIO have a green program. One element is of course improving energy efficiency of the underlying IT infrastructure.

One societal goal is to reduce energy demands, as we have done in our Ethernet switches (would you believe 40% less energy consumed compared to Cisco?).

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Formula 0 Race and The Cisco Energy Tax

December 17, 2008 3:08 PM

Last summer in Rotterdam, six teams competed in a Formula 0 race, a new zero emission race series took place on a .5Km track. Each car was powered by a commercial fuel cell that produces electricity from hydrogen.


How does this relate to green networking?

We are certainly not about to introduce an Ethernet Switch powered by a fuel cell.

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