Eurotech Aurora HPC solutions

Aurora Liquid Cooling

Liquid cooling for Eurotech

Liquid cooling for us is:• Hot.That means: using hot water wherever possible• Direct. Taken inside the rack in direct contact with the

components• Green. Able to use free cooling or natural cooling in any climate

zone• Comprehensive.. Cools any source of heat in the server

(including power supply)• Serviceable and safe. Allows ease of maintenance and doesn’t

represent a risk for the electronics in the server

Plus liquid cooling for us is:• Flexible. Offering an engineering solution, a choice of processors,

acting on coolant temperature, flow rate to provide to the customer the solution and operating conditions that guarantee maximum performance at the lowest total cost

What is liquid cooling is for us

Aurora liquid cooling

• The main components of the Aurora cooling system are:• Cooling circuit, that is the pipe work which bring the water to the heat

exchanger and back to the rack• The heat exchanger for free cooling• Distribution pipes which are mounted in the rack• The back plane, which collects the liquid from the distribution pipes and

distributes it to the cold plates• Cold plates: aluminum boards which are intimately coupled with the electronic

boards of compute nodes, PCUs and switches• Quick disconnects that are mounted on the cold plates for inflow and outflow

of liquid in the plates. The quick disconnects are fine pieces of engineering that seal immediately when the boards is extracted from the back plane. No leakage is possible

High level description

Aurora Rack

Aurora hot water cooling

Heat exchanger

Liquid distribution bar

Heat

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late

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Backplane

Building

Quick disconnects

Internal cooling Loop

Loop #1

Loop #6

Loop #12

Pump

Heat exchanger

Dry cooler

Filter

Aurora liquid cooling infrastructure

Complete Node Card Aurora

Node card covered by the cooling cold plate, with space for optional SSD. 32 of such boards (64 CPUs) packed into 6U

Dry Coolers example: 400 kW installation

• Redundant (2 fans) Drycooler e.g. ThermoKey

2x dry-cooler 220 kW

Cooling installation for 4 racks Aurora Pumps and filter

Advantages of the Eurotech approachHot liquid cooling• Avoid/limit expensive and power hungry chillers with the only

cooling method that requires almost always dry coolers only• Minimize PUE and hence maximize energy cost savings• Reuse thermal energy for heating, air conditioning, electrical

energy or industrial processes• “Clean” free cooling: no dust, no filters needed to filter

external air

Direct on components liquid cooling via cold plates• Allow very high densities and very limited heat spillage• Save in maintenance cost thanks to smooth heat distribution

(no board and data center hot spots)• A seamless hot swap solution that guarantees serviceability

and ease of maintenance

Eurotech competencies with water cooling• First in the market to offer an hot swap liquid cooled solution• Years of experience in dealing with water