v
Where rack cabinets are in rows front-to-front or back-to-back, a gap of at least
1220 mm (48 in.) must separate the rows across the cold aisle.
v
To ensure correct airflow in each rack cabinet, the rack filler plates must be
installed in unused positions. Also, all the gaps in the front of the rack cabinets
must be sealed, including the gaps between the storage subsystems.
Cold aisle
Air
conditioner
Hot aisle
back
front
back
back
front
Airflow
front
2440 mm between
center lines of hot
and cold aisle
Perforated tiles
or gratings
1220 mm cold
aisle width
T42 racks
T42 racks
T42 racks
f10ug001
Figure 12. Example of cold aisle/hot aisle rack cabinet configuration
Chapter 1. Introduction
31