Uneven temperature.
WHAT A HOT SPOT IS
A location where intake temperature is significantly higher than elsewhere.
WHY THEY OCCUR
Uneven load distribution Blocked airflow Missing blanking panels Equipment installed backwards Inadequate air delivery to that location
WHY AVERAGES CONCEAL THEM
A room averaging an acceptable temperature can contain equipment running far too hot.
WHERE THEY USUALLY APPEAR
The tops of racks The ends of rows Behind cable obstructions Around high-density equipment
WHAT TO DO
Measure at multiple points and heights Identify the specific cause Address that, rather than cooling the whole room harder
WHY NOT COOL HARDER
It wastes energy and frequently does not reach the hot spot at all.
WHAT USUALLY FIXES THEM
Blanking panels Correcting airflow obstruction Redistributing load Adjusting tile placement
WHAT TO AVOID
Distributing high-density equipment without checking the cooling can support it.
WHAT TO MONITOR
Per-rack intake temperatures, continuously where possible.
