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Sniffing Out a Data Center’s PUE

Power Usage Effectiveness or PUE, is the most commonly used metric in Data Centers today.  Data Center industry organizations tout it, major companies brag about their scores, and energy efficiency certifications use it in their ratings.

Despite how thoroughly it has been embraced, though, it’s not without flaws.  In my opinion, they mostly stem from the fact that PUE is more complicated than it looks.  Although calculating the metric is a relatively straightforward exercise, the resulting score doesn’t tell you anything about the factors that influenced it.  Hence why it’s a bad idea to compare PUE among Data Centers.

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Data Center Metrics to Mull Over

How well is your Data Center performing?

How do you know?

I went shopping for a car last year and was pleased to see several models equipped with real-time displays of their miles per gallon performance.  That’s a great feature, in my opinion, because it offers drivers up-to-the-moment insight into how efficiently their cars are operating.

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Cisco’s Other Production Data Center

If sibling rivalry exists among Data Centers, our Richardson, Texas facility must be jealous.  Unveiled in 2007 as Cisco’s next-generation Data Center and subsequently toured by thousands of visitors, the site hasn’t received much attention since its younger brother came online in 2011. Read More »

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2012 Year In Review

Two things I greatly enjoy about working in and around Data Centers are that so many different technologies converge within them and that those technologies are constantly evolving.  There’s always something new to explore.

It’s no surprise then that Data Center Deconstructed ping-ponged among several topics in 2012, from choosing a site to relocating servers to incorporating alternative energy, and more.  I even tried my hand at blogging in real-time, posting live from the annual Technology Convergence Conference.

Here’s are the Data Center Deconstructed topics that received the most attention this year.  Check out any you’ve missed: Read More »

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Here Comes the Sun

When I was a kid, one of my neighbors had a solar radiometer.  It’s a glass bulb about the size of a baseball, with diamond-shaped panels connected to a spindle.   The panels, black on one side and silver on the other, would turn on the spindle when exposed to light.

I enjoyed experimenting with the gizmo, edging it in and out of the sunbeam that shone through a window and onto their kitchen table.  How close to the light did the radiometer need to be for the panels to move? What if I shaded it with a piece of cardboard?  How fast would the spindle turn if I put the radiometer fully in the light? Read More »

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