Installing The Chassis In A Four-Post Rack; Attaching The Bottom-Support Rails To The Rack - Cisco Nexus 9396PX Hardware Installation Manual

Installing the Chassis
Step 2
Use the second person to secure the three customer-supplied rack-mount screws (typically M6 x 10 mm or other appropriate
screws for the rack) on each center-mount bracket to attach the chassis to the rack. Tighten each screw to the appropriate
torque setting for the screws (for M6 x 10 mm screws, use 40 in-lbs [4.5 N·m] of torque).

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 whether the fan and power supply modules
are designed to exhaust hot air (port-side intake airflow with burgundy color markings) or take in cold air
(port-side exhaust airflow with blue color markings), 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 color markings) airflow requires that the bottom-support rail with the chassis
• Port-side exhaust (blue color markings) airflow requires that the bottom-support rail with the chassis
Statement 1074—Comply with Local and National Electrical Codes
Warning
Installation of the equipment must comply with local and national electrical codes.
Before You Begin
Before you can install the bottom support rails for the chassis, you must do the following:
• Verify that a four-post rack or cabinet is installed.
• If any other devices are stored in the rack or cabinet, verify that the heavier switches are installed below
• Verify that the bottom-support rails kit is included in the switch accessory kit.
• Verify that you have 8 screws for attaching the bottom support brackets to the racks (typically M6 x 10
stop be located on the hot aisle side of the rack.
stop be located on the cold aisle side of the rack.
lighter switches and that there is at least 2 rack units open to install the switch.
mm screws or the screw appropriate for the vertical mounting rails on the rack.
Cisco Nexus 9396PX NX-OS-Mode Switch Hardware Installation Guide

Installing the Chassis in a Four-Post Rack

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