Cisco Nexus 7000 Series Hardware Installation And Reference Manual page 216

Chassis Airflow
Figure 143: Airflow for the Cisco Nexus 7018 Chassis
1 Airflow for cooling the supervisor and I/O
modules
2 Airflow for cooling the fabric modules
For the Cisco Nexus 7004 switch, you can route cables on the left or right side without interfering with coolant
airflow, which goes in on the right side. Be sure to otherwise leave the right side unblocked so that cool air
can flow from the cold aisle in the front to the chassis.
To allow for the Cisco Nexus 7009 and 7018 switches to take in air from the cold aisle and floor on the right
side, you should route cables on the left front side of the switch. If necessary, you can route cables on the
upper right front side of the chassis, which leaves the lower right side open to cooling air from the cold aisle
in front of the chassis. By having the cables on the left side and leaving the left rear side unobstructed, the
exhaust is directed to the hot aisle in back.
For the clearances required on each side of the switch, see the
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
204
3 Airflow for cooling the power supply units
Chassis Clearances, on page
Technical Specifications
186.