Installing support rails for the node
Before you install the node, you must first install the support rails for it.
Procedure
To install the support rails for the node, complete the following steps.
-
Locate the node rails.
The rail assembly consists of two rails that must be installed in the rack cabinet.
Figure 1. Node support rails 
-
Working at the front of the rack cabinet, identify the two standard rack units (2U) of space in
the rack into which you want to install the support rails.
The following figure shows two rack units with the front mounting holes identified.
Figure 2. Hole locations in the front of the rack 
- 1 Upper rail-mounting bracket pin
- 2 Lower rail-mounting bracket pin
- 3 Rack mounting screw hole
-
Ensure that the appropriate bracket pins are installed in the front and rear bracket of each
rail.
Each rail comes with four medium pins preinstalled (two in the front bracket and two in the rear bracket). Large pins are provided separately. Use the pins that are appropriate for the mounting holes in your rack (see the following table).
Table 1. Selecting bracket pins for your rack Mounting holes Bracket pins Round, unthreaded Use the preinstalled medium pins. Square Unscrew the medium pins and replace with the large pins that are supplied with the rails. -
At each end of the rail, grasp the tab 1 and pull
firmly to open the hinge bracket.
Figure 3. Opening the hinge brackets 
-
Align the holes in the rail bracket with the holes on the front and rear rack cabinet
flanges.
Ensure that the rails are aligned on the inside of the rack cabinet.
- On the rear of the rail, press the two bracket pins into the holes in the rack flanges.
-
Close the rear hinge bracket to secure the rail to the rack cabinet flange.
Figure 4. Closing the hinge brackets 
- On the front of the rail, press the two bracket pins into the holes in the rack flanges.
- Close the front hinge bracket to secure the rail to the rack cabinet flange.
- Secure the rear of the rail to the rear rack flange with two black M5 screws.
- Repeat the steps to secure the opposite rail to the rack cabinet.
- Repeat the procedure to install rails for each additional node.