Let the (PUE) GAMES begin!!!! Perhaps we need a PUE SPIRIT rating…

OK, just when I thought I had heard everything, I hear about a ‘trick’ being used by at least one company to stuff the ballot box for PUE. Turns out that there is a growing number of LIGHTING systems on the market that have intentionally been created to be installed with Low Voltage. Specifically, the low voltage found in Power-Over-Ethernet. These lighting systems goals are noble: Easy to deploy, Simpler and lower cost to manage low-voltage wiring installations in ceilings, and floors, etc.  BUT, it provides a PUE loophole if that is the main goal. Let me explain…

So what does low voltage lighting have to do with PUE-style energy efficiency? It means that an DC Alpha-Male that wishes to lower their reported PUE (and bragging rights that go with it) by a few points can now deploy their Data Center lighting and include the energy consumption inside the IT load part of the equation, instead of the ‘overhead’ portion of the PUE equation.  Mathamatical Gymnastics at it’s finest.  Just by changing the source of power, the lighting becomes a GOOD thing, rather than a BAD thing.

Is this the spirit of PUE? Hard to say at first glance since it takes the analysis farther away from reality regarding the overall power efficiency of doing IT work. That said, Low voltage lighting in general is a very efficient technology (like the Redwood Systems offerings).

Bottom line:  Should LIGHTING be listed as part of the IT Load value? Me thinks not…

About admin

Mark Harris Fremont, CA
This entry was posted in Uncategorized and tagged , , , . Bookmark the permalink.

Leave a Reply