Installing The Chassis In A Four-Post Rack; Attaching The Bottom-Support Rails To The Rack - Cisco Nexus 9336PQ Hardware Installation Manual

Installing the Chassis
• Cables with connectors
• Any optional items ordered
Step 2 Check for damage and report any discrepancies or damage to your customer service representative. Have the following
information ready:
• Invoice number of shipper (see packing slip)
• Model and serial number of the damaged unit
• Description of damage
• Effect of damage on the installation
Step 3
Check to be sure that all of the fan and power supply modules have the expected direction of airflow. Burgundy coloring
on fan and AC power supply modules indicates port-side intake airflow, and blue coloring indicates port-side exhaust
airflow. DC power supply modules have either port-side intake airflow (green coloring) or port-side exhaust (grey
coloring). HVAC/HVDC power supply modules have white coloring to indicate that they automatically use the same
airflow direction used by the fan modules.

Installing the Chassis in a Four-Post Rack

Before you install the chassis, be sure that the rack is fully secured to the data center floor.
You must attach the bottom support rails to the rack and attach the mounting brackets to the chassis before
mounting the chassis in the rack.

Attaching the Bottom-Support Rails to the Rack

The switch chassis that you are installing ships with two adjustable bottom-support rails that you can attach
to a four-post rack to hold the chassis. Each of these bottom-support rails has two pieces—one that slides into
the other so that you can adjust them to fit racks with front and rear mounting posts that are spaced less than
36 inches (91 cm). On each bottom-support rail, the rail half that slides into the other rail includes a chassis
stop that fits into the module end of the chassis. Depending on direction of the chassis airflow, you need to
position the rail half with the chassis stop so that the fan and power supply modules end up in the appropriate
aisle as follows:
• Port-side intake (burgundy coloring for fan modules) airflow requires that the bottom-support rail with
• Port-side exhaust (blue coloring for fan modules) airflow requires that the bottom-support rail with the
Warning Statement 1074—Comply with Local and National Electrical Codes
Installation of the equipment must comply with local and national electrical codes.
the chassis stop be located on the hot aisle side of the rack.
chassis stop be located on the cold aisle side of the rack.

Installing the Chassis in a Four-Post Rack

Cisco Nexus 9336PQ ACI-Mode Switch Hardware Installation Guide
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