ASHRAE Technical Committee (TC) 9.9 published the 5th Edition of their Thermal Guidelines for Data Processing Environments in March 2021. While there are other minor clarifications, updates and corrections, the primary updates center around the air-cooled relative...

While many organizations have moved away from on-premise data centers in the past decade, where they go (or should go) is a topic of much debate. And as many enterprise decision-makers weigh their options, some ultimately realize they don’t want to fully embrace the...

One year ago, I wrote Going Green in 2021, and there have already been many updates and changes in our industry. I can't believe it's already been a year since I wrote that blog. It wasn't until the blog editor emailed me for an update that I realized just how far...

The other two important ΔTs – the temperature differential from IT equipment exhaust to cooling unit return intake and from cooling unit supply to IT equipment intake – will account for unexpected differences between the IT equipment ΔT and cooling equipment ΔT. In an...

There is not just THE ΔT and there are not even just two ΔTs in the data center. As a matter of fact, there are four different ΔTs which contribute to the health of the data center. Two of these temperature differentials are frequently considered as a single metric:...