While many others were at NGDC, I stay close at home and attended the arrival of Data Center Dynamics to Seattle where 243 people attended an event that expected 200, according to Stephen Worn, CTO. Many times I find a small event enables better networking as you see the same people many times during the conference and you start to build connections with others who have common interests.
One of the people I met at Uptime Institute's Symposium 2008, Green Enterprise Computing event is Digital Sense's Michael Tran. I suggested he visit Data Center Dynamics Seattle as he was already planning a US trip and I can introduce him to some other people who are building Green Data Centers.
To handle power densities over 25 kW per rack, Digital Sense has chosen Emerson's Liebert XDO cooling as the primary cooling system. Michael said his installation will be the largest installation of XDO cooling in the world.
Being a little curious I searched for more information on cooling systems that can be repositioned and found some interesting patents. I found one patent with Liebert's Lennart Stahl and Christian Belady. I don't know Lennart, but I do know Christian. Searching more I found 2 more patents with the same two people on them.
US Patent 6,564,858
A method and system are disclosed for cooling a heat generating object. A coolant is passed through a heat exchanger so that heated air passing through the heat exchanger is cooled. A fan unit is selectively positioned adjacent to a first side of the heat exchanger. When activated, the fan unit draws the cooled air through the heat exchanger and directs the cooled air towards the heat generating object. The fan unit may be repositioned along a second side of the heat exchanger so as to redefine the flow of air drawn from and directed towards the heat generating object.
US Patent 6,705,389
A method and system are disclosed for cooling a heat generating object. A coolant is passed through a heat exchanger so that heated air passing through a first portion of the heat exchanger is cooled. A fan unit is selectively positioned relative to the heat exchanger. When activated, the fan unit draws the cooled air through a second portion of the heat exchanger and directs the twice cooled air towards the heat generating object. The fan unit may be repositioned along a different portion of the heat exchanger so as to redefine the flow of air drawn from and directed towards the heat generating object.
US Patent 6,854,659
A system for cooling heat generating objects arranged in a room. The system adapts in real time to changing cooling demands of the objects. Remote sensors mounted in proximity to the heat generating objects relay information to cooling units, which adjust their operation in response to the information.
After understanding more what Michael is doing, one guy I wanted to introduce him to is Christian Belady as he would be a good person to validate Digital Sense's use of Liebert XDO as it appears they have been influenced by some of Christian's cooling ideas.
We ended up chatting for over an hour on power and cooling techniques with power supply architect Shaun Harris, joining in the conversation. Christian also pulled in Stephen Worn for a bit to discuss power and cooling ideas, and how customers like Michael Tran need to give more presentation at future events.
6 degrees of separation is an idea supported by Microsoft Researcher Eric Horvitz's recent article. But what I find at Data Center Dynamics events there are many times the degree of separation is only 3 degrees or less.
Another recommendation for Data Center Dynamics is by Ken Oestrich.