rear doors of the equipment cabinets have 83% perforation. The in-row side cooling unit concept of bringing cold air close to the installed IT equipment has been thoroughly tested by the solutions company over the past few years. The key data centre framework
products which were supplied by Conteg for this project were the side cooling units (in-row), rack infrastructure, cable management products, air management products, and PDUs. Rack mount UPS and UPS cooling were delivered by a third party vendor. For this project, the installed raised floor had a height of only 38 cm. This area was used as a space for communications/network cabling and the chilled water system piping. Ceiling clearance was very limited for a standardised cold aisle solution and too little ceiling clearance prevented the installation of standard cold aisle roof panels in one area. In the first block of contained cold
aisle cabinets forty 42U 19” data racks were installed, twenty on each side of the row. All racks that are in this block have 83% vented front and rear doors and installed blanking panels for the
vacant mounting spaces. The cable openings in the cabinets have brush covered grommets to further reduce the risk of air remixing. Along with the cabinets in this
first block there are ten side mount (in-row) cooling units configured for open architecture using chilled water from an existing system. Each of the in-row cooling units was designed to have a nominal cooling capacity of 19.3 kW. Each unit is equipped with five hot swappable radial fans, which continuously regulate across the speed range of 0-100%. The source of chilled water is an existing unit located on the roof of the building. The space saved from using cooling units of 300 mm rather than 600 mm width allowed for the installation of additional revenue generating racks and fore and end section cabling racks with high density cable managers. The end of row cabling that is accessible from three sides simplifies operations with data cabling. The design for the second contained
aisle included twenty four 42U segregated server housing racks with two customer sections; twelve 42U segregated server housing racks with two costumer sections, and twelve
42U segregated server housing racks with four customer sections. In every segregated rack an air separation kit was installed to prevent cool air loss around the installed equipment. The generation and regulation of cooling air in the aisle is ensured by eight side mount (in-row) cooling units with N+1 redundancy. To maximise the use of floor space, there are cabling end sections at the end of each row. The end sections fully replace a standard 800 mm wide cabling rack, including high density cable managers. The third contained cold aisle area
houses four modular UPS units that distribute current in two completely independent energy branches. Estimated efficiency of the power system is 96.5%. Each of the UPS units provides up to 120kW and generates an output capacity of up to 7 kW of heat. Maximum load of all 4 units generates 28 kW of heat. To keep proper temperature even during this max power there are two in-row cooling units providing N+1 redundancy with a nominal cooling capacity 30 kW (2 x 30kW).
Faster – better – worldwide.
CONTROL
www.netcommseurope.com
IT INFRASTRUCTURE
SOFTWARE & SERVICES
www.rittal.co.uk NETCOMMS europe Volume I, Issue 4 2011 45
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