RACA Journal June 2025 RACA_June2025 | Page 50

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Professionals who care
MICHAEL YOUNG
Michael Young is a trainer, coach and a pre-sales engineer in the HVAC industry. He graduated from the University of the Witwatersrand in the field of Mechanical Engineering( B. Sc Mech Eng) in 2008 and qualified as a Professional Engineer( Pr. Eng) in 2013. Michael is passionate about promoting knowledge and helping other young engineers grow within the industry through his training workshops and coaching sessions.

HOW TO COOL THE DATA CENTRE IN THE 21ST CENTURY( PART 11)

By Michael Young( Pr. Eng)
Ways to reduce hot spots within a data centre
hot spot within a data centre is defined as an area where

A the entering air temperature to a server, storage system, router or other electronic equipment is higher than 27 ° C.

Since the formation of hot spots can reduce reliability and cause damage to electronic equipment, data centres often adopt practices such as hot and cold aisle containment and the use of blanking plates to further prevent the development of hot spots.
However, sometimes other factors such cable management or inconsistent deployment of servers can still result in the development of the hot spots within the data centre space.
So, let’ s begin by discussing cable management. When dealing with cold aisle containment, it is common to install all electrical cables within the raised floor. Unfortunately, some data centres try to reduce the installation costs by installing a shallow raised floor with heights that are less than 300mm.

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RACA Journal I June 2025 www. refrigerationandaircon. co. za