• 3.0 inches (7.6 cm) between the rear of the chassis and the perforated rear door of the cabinet
(required for airflow in the cabinet if used).
This requirement does not apply to enclosures which have a solid rear door or
wall with other exhaust configurations.
Note
• No clearance is required between the chassis and the sides of the rack or cabinet (no side airflow).
Additionally, you must consider the following site requirements for the rack:
• Power receptacles must be located within reach of the power cords used with the switch.
• AC power supplies
• Power cords for 3-kW AC power supplies are 8 to 12 feet (2.5 to 3.6 m) long.
• DC power supplies
• Power cords for 3.0-kW DC power supplies are supplied and dimensioned by the customer.
• HVAC/HVDC power supplies
• Power cords for 3.5-kW HVAC/HVDC power supplies are 14 feet (4.26 m) long.
• Clearance required for cables that connect to as many as 400 ports (in addition to the cabling required
for other devices in the same rack). These cables must not block access to any removable chassis modules
or block airflow into or out of the chassis. Route the cables through the cable management frames on the
left and right sides of the chassis.
• Where necessary, have a seismic rating of Network Equipment Building Standards (NEBS) Zone 3 or
Zone 4, per GR-63-CORE if required.
• Minimum gross load rating of 2000 lb (907.2 kg) (static load rating) if supporting two switches.
Clearance Requirements
You must provide the chassis with adequate clearance between the chassis and any other rack, device, or
structure so that you can properly install the chassis, route cables, provide airflow, and maintain the switch.
For the clearances required for an installation of this chassis, see the following figure.
Cisco Nexus 7706 Hardware Installation Guide
11
OL-31330-01
Preparing the Site
Clearance Requirements
