
Something like this. These are parts from fans that were surplus and dismantled from twenty servers in a test rack located in the DataPro data center. Below β the traffic. An illustrated description of our cooling system. And an unexpected offer for those very economical yet slightly fearless owners of server equipment.
The cooling system for server equipment based on loop heat pipes is considered an alternative to liquid cooling systems. Comparable in effectiveness, it is cheaper to implement and operate. Moreover, it theoretically avoids the risk of liquid leaks inside expensive server equipment.
Last year, our first experimental rack was installed in the DataPro data center. It consists of forty identical Supermicro servers. The first twenty of these have a standard cooling system, while the next twenty have been modified. The aim of the experiment is to test the suitability of our cooling system in a real data center, in a real rack, with real servers.

I apologize for the quality of some photos. We didn't pay much attention back then, and now there's no opportunity to reshoot the process. Also, many photos are in portrait orientation. Like the star of this publication, the server rack.

At the top of the rack, there are standard servers. At the bottom β the heat exchange bus with compression devices for unusual, (almost) fanless servers. Fans remain only for cooling the memory. Heat from the processors is transferred to the heat exchanger using our loop heat pipes. From the heat exchanger, heat is routed through a liquid bus to somewhere else.


It could be an outdoor adiabatic system. These are installed on building rooftops. Or next to buildings.

Or perhaps a heating system. Or an eco-farm for growing vegetables. Or a heated outdoor pool. Or any other product of your imagination. Requiring a heat transfer temperature of 40-60Β°C.
The assembled rack looks like this.

View of the thermal interfaces. Donβt be alarmed, this is just the first revision.

An even harsher look. Yes, this is Made in Russia. π

The second revision will look noticeably less harsh. Perhaps even a bit attractive.
We are looking for economical and brave individuals.
Today we are gearing up for the assembly of a new rack based on the second revision of our server cooling system. It will also be located at the DataPro data center. But what do we need for this? Nothing too complicated β forty identical hot servers.
We are ready to purchase some hot servers, even if they are not brand new, for our needs. But before that, it would be a missed opportunity not to inquire within the Habr community. Perhaps someone would like to contribute their hardware to our experiment?
In that case, we would have the chance to work with something much newer than what we would acquire ourselves. And, significantly more valuable, this would operate under real, rather than synthetic, loads.
In exchange, we offer free integration of our cooling system into your server rack. The approximate market value of such an "upgrade" is around 1.5 million rubles. From our partners, DataPro, there will be a discount on the placement of such a modified rack in their data center. The size of the discount will be discussed further with the interested party.
We have the ability to make modifications to server equipment while maintaining warranty obligations. Partnerships have already been established with Lenovo, IBM, and DELL, and we are working on expanding this list.
I would be happy to see all the brave souls in private messages. here on Habr or through any contact listed in my profile. And for those interested in cooling topics (including server cooling) of computer equipment, I remind you about our social media. and . We expect to release some educational video content soon. Don't miss out.
Source: habr.com
