IBM System Storage Subsystem DS5020 - Manual (Page 55)

1220 mm cold
aisle width
2440 mm between
center lines of hot
and cold aisle
Perforated tiles
or gratings
back
back
T42 racks
T42 racks
T42 racks
Cold aisle
Hot aisle
Air
conditioner
back
front
front
front
Airflow
Figure 11. Example of cold aisle/hot aisle rack configuration
Chapter 1. Introduction 25