EXPERIENCE designs, develops and manufactures enclosures for the electronics industry: cabinets, cases, racks, systems, fine sheet metal work, etc., in France, in its Glos (Normandy), and Carros (French Riviera) plants. For more than 40 years, ATOS has been working to provide an indoor or outdoor enclosure solution for every requirement in the electronics industry: standard, adapted standard, customized or production as per drawings. focus, ATOS serves the telecommunications, With its strong customer Transportation (aerospace, railway, aviation, navy, etc.), electronics and IT markets (OEM and...

has developed, in addition to its original sheet metal and modular mechanics businesses, a range of services enabling it to offer its customers DESIGN AND DEVELOPMENT ✓ Two design offices create standard, adapted, or customized products. ✓ Mechanical, electrical or thermal^B dimensioning: Power distribution, ✓ Air cooling, water-cooling syste up to 50kW pr cabinet, ✓ Solution architecture: Integration, power distribution, cooling, supervision. ✓ 3D CAD mechanical and sheet metal design. ✓ Electrical design: diagram creation. PROTOTYPING A focused and responsive organisation builds prototypes...

CONTENTS COOLING SOLUTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 6 to 14 COOLING SYSTEM PRESENTATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7 COLD CONTAINED AISLE “CCA”. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 HOT CONTAINED AISLE “HCA” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 CONTAINED CABINET AND MODULE “CCM”. . . . . . . . . . . . . . . . . ....

cooling system presentation Light or no cooling problems WITHOUT REAR Perforated doors for Convection (81% perforation) Contained Cold Aisle Contained Aisle with Aisle Cooling Module Rear desired: Medium Density = 6 to 15 kW Hot Contained Aisle Cold Contained Aisle Passive cold door. CCM MODUL’X Passive Cold Doors Horizontal section Rear CONTAINMENT Cabinet and Cabinet Cooling Modules Cabinet and Active Cold Doors MODUL’X Exchanger exhaust T° 34°C +/- 2°C (t: 12°C Outlet temperature

cooling system presentation VISUAL Servers Contained Aisle with Aisle Cooling Module Horizontal section

Cold contained aisle “cca” COLD CONTAINED AISLE “CCA” Principle: The pulsed fresh air in the raised floor is channelled to the front of the racks by closing the Cold Aisle: sliding end doors and removable glass roofs between two rows of racks. • Completely passive system. • The air inlet temperature is controlled over the entire height, no hot air is allowed to return to the front of the cabinets. • 1 0% of the air pulsed by the room air con0 ditioning units is used by the servers. Section This principle contributes to saving energy and improving the carbon footprint of computer fleets. COLD...

HOT CONTAINED AISLE “HCA” Principle: • The heated air leaving the servers is blown through the hot contained aisle. • The “ACM” aisle cooling modules extract the air from the aisle and cool it via an air/water exchanger. • he air flow is monitored by the pressure drop and T water flow by the outlet temperature setting • Close-to-server cooling system. • Ability to define the redundancy level: N+1 to 2N. • Air flow control enables optimum server operation. • Management: Alarm feedback by SNMP trap. SNMP-based ON/OFF mode management. data supervision by IMPI. Horizontal section This principle contributes...

CONTAINED CABINET AND MODULE ASSEMBLY, REAR CONTAINMENT ONLY Principle: A CCM consists of one or more cabinets and Cabinet Cooling Modules (“CCM”). The assembly is sealed by adding a Rear containment. Horizontal section Rear CONTAINMENT • Close-to-server cooling system. • Possible redundancy. • ir flow control enables optimum server operaA tion. • ore compact solution than an HCA from 1 to 4 M cabinets. • anagement: Alarm feedback by SNMP trap. M SNMP-based ON/OFF mode management. Data supervision by IMPI. 12 to 35 kW / rack Configuration example : 3 cabinets + 2 CCM Performance: Module cooling...

CONTAINED CABINET AND MODULE “CCM” COMPLETE ASSEMBLY, REAR FRONT-REAR Principle: A CCM consists of one or more cabinets and Cabinet Cooling Modules (“CCM”). The assembly is sealed by adding Front and Rear containments. Rear FRONT Horizontal section Rear CONTAINMENT • Close-to-server cooling system. • Possible redundancy. • ir flow control enables optimum server operation. A • ore compact solution than an HCA from 1 to 4 M cabinets. M • anagement: Alarm feedback by SNMP trap. SNMP-based ON/OFF mode management. Data supervision by IMPI. • The room does not need to be air conditioned. Performance:...

PASSIVE COLD DOOR Function: Rear door including an air-water exchanger, with a cooling capacity of 10 to 20 kW depending on the available water temperature. Pressure drop is very low and does not disrupt the servers. The heated air leaving the servers is cooled by a chilled water coil housed in the rear door. Coilrelated pressure drop remains within the limits recommended by server manufacturers: Pressure drop < 25 Pa Benefits of a passive door: • Optimised regulation. • Max power consumption <25 W • Enhanced hardware safety. • Communication: Modbus RTU or TCP/IP, SNMP optional Installation recommendations:...

WATER-COOLED CABINET Function: Cabinet fitted with a water-cooled door, capable of housing up to 45 kW of hardware without heating the outlet air and without disrupting server ventilation. The heated air leaving the servers is cooled by a chilled water coil housed in the rear door. Coilrelated pressure drop is conpensed by fans Benefits of a water-cooled door: • Optimised regulation. • anagement: Alarm feedback by SNMP trap. M SNMP-based ON/OFF mode management. Data supervision by IMPI. • Optimum power consumption < 800 W. • Enhanced hardware safety. • Specific features. The “ACD” Active Cold...