Attaching Bottom-Support Rails To A Four-Post Rack - Cisco Nexus 7706 Hardware Installation Manual

Installing the Switch Chassis
Step 3
Repeat Steps 1 and 2 to attach the other bottom-support rail to the rack.
Make sure that the two bottom-support rails are level with one another. If they are not level, adjust the higher
Note
rail down to the level of the lower rail.
Step 4
Align the crossbar to the lower back of the two bottom-support rails and use two M4 x 8 mm screws to attach it to each
rail (one screw for each rail). See Callouts 3 and 4 in the previous figure for the placement of the crossbar and its screws.
What to Do Next
When the bottom-support rails are installed at the lowest possible RU and are level, you are ready to install
the chassis in the rack or cabinet.

Attaching Bottom-Support Rails to a Four-Post Rack

The bottom-support rails support the weight of the switch chassis in the rack or cabinet. To maximize the
stability of the rack, you must attach these rails at the lowest possible rack unit (RU).
To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to
ensure that the system remains stable. The following guidelines are provided to ensure your safety:
• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the
• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the
Statement 1006
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 and secured to the concrete subfloor (see
• If any other devices are stored in the rack or cabinet, verify that they are located below where you plan
• Verify that the bottom-support rails kit is included in the switch accessory kit (see
Step 1
Position one of the two adjustable bottom-support rails at the lowest possible RU in the rack or cabinet and adjust the
length of the rail so that it stretches from the outer edges of the front and rear vertical mounting rails. Be sure there is at
least 9 RU of vertical space above the rails to install the chassis (see the following figure).
OL-31330-01
heaviest component at the bottom of the rack.
unit in the rack.
Rack or Cabinet).
to install the switch. Also, verify that lighter devices in the same rack are located above where you plan
to install this switch.
the chassis shipment for completeness and
Attaching Bottom-Support Rails to a Four-Post Rack
damage).
Cisco Nexus 7706 Hardware Installation Guide
Installing a
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