Follow a few tried and tested installation tips when installing your equipment and you
can make significant savings in power usage and reduce wear and tear on your
mission-critical systems, saving you money and reducing your carbon footprint by
Lex Coors, VP Data Centre Technology & Engineering Group, Interxion
● Switch off spare fans: If you are using open cabinets cables blocking the airflow, which can result in hotspots
make sure that no old roof fans used in closed cabinets
above the raised floor. It also requires more CRAC unit
are still running, causing unnecessary energy
capacity than the specified IT hardware load for N+1 (N
consumption.
represents the actual IT hardware load in CRAC unit
capacity and +1 represents the redundant CRAC unit)
● Check door openings: Make sure that the percentage
of your door grid opening is sufficient to cool the servers.
● Maximum 4 tiles up: Do not open the raised floor over
This avoids hotspots and means that the server fans do
a distance of more than 4 tiles as this may result in an
not need to work overtime to force the air through the doors.
unstable raised floor, loss of cooling capacity, short-
circuiting of air, extra re-heating and extra de-
humidification.
● Keep clear of floor vents: Try to avoid installing your
cabinet partially on a ventilated or louvered tile. This
keeps the server air intake clear, reduces hotspots and
● Do not adjust your CRACS: Try to avoid changing the
keeps raised floor access clear.
setting of the CRAC units as it may result in hotspots and
unnecessary waste of cooling energy.
Outside the cabinet
● Keep the hot aisle hot: Don’t install ventilated or
louvered tiles in the hot aisle: the hot aisle is supposed to
be hot and changing the layout can lead to new hotspots
and reduce the cooling efficiency of the CRAC units.
Always bundle cable to avoid curtains of cables blocking the airflow
Lex Coors, VP Data● Keep the cold aisle cold: Do not close off or remove
ventilated or louvered tiles in the cold aisle: the cold aisle Centre Technology &
is supposed to be cold and changing the layout can have Engineering Group -
the same negative effects mentioned above.
Interxion
● Close the door quickly: Do not leave the door to your
Lex Coors has been managing complex engineering and
data centre space open unnecessarily as the extra air
design and build challenges since the early 1980s. As
pressure inside the room will be lost resulting in dust
Interxion’s Director of Engineering, and latterly VP Data
accumulating inside the room, servers and CRAC filters
Centre Technology & Engineering Group, he has
which can lead to server malfunction. Leaving the door
supervised the design, build and upgrade of nearly
open can also lead to CRAC unit inefficiency, extra
50,000m” of data centre space in 24 locations in 12
opening of the chilled water valve and extra chiller
countries. A founder member of
compressor activity resulting in unnecessary energy
the Uptime Institute, Lex is also a
consumption. More reasons for closing the door? Leaving
member of European Commission
them open can also lead to hotspots, extra de-
DG Joint Research Committee on
humidification, re-heating and humidification, with all the
Sustainability and the European
unnecessary energy consumption that entails.
Data Centre Code of Conduct
Metrics Group as well as being a
● Bundle under-floor cables: Tie up and bundle all
regular contributor to The Green
cables underneath the raised floor. This avoids curtains of Grid Technical Forum.
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