Replacing the cable-management arm: 2145-DH8

You can use this procedure to replace the SAN Volume Controller 2145-DH8 cable-management arm.

1. Install the cable management arm on the left-rear side of the node, as shown in Figure 1
   1. Connect one end of the support arm to the same slide rail to which you plan to attach the cable management arm.
   2. Swing the other end of the support arm toward the rack.
   Figure 1. Installing the cable-management arm

   
2. Connect the other end of the support arm to the stop bracket, as shown in Figure 2.
   Figure 2. Connecting the cable management support arm to the stop bracket

   
3. Connect the stop bracket to the slide rail, as shown in Figure 3.
   1. The capital letters I and O are printed on cable management arm pins to identify the inside and outside pins.
   2. Install the cable management stop bracket (with capital letter O) on the unattached end of the support arm.
   3. Verify that the support arm is securely installed.
   Figure 3. Connecting the stop bracket to the slide rail

   
4. Install the cable management arm stop bracket, as shown by Figure 4.
   1. Place the cable management arm on the support arm.
   2. Pull out both the inside and the outside pins of the cable management arm.
   3. Slide the cable management arm tabs into both the inside and the outside slots of the slide rail.
   4. Push the tabs until they snap into places.
   Figure 4. Installing the cable management arm stop bracket

   
5. Close the cable management support stop, as shown in Figure 5.
   1. Open the stop bracket, which makes rotating the cable management arm on and off the cable management support arm easier.
   2. Push the tabs above and below the cable management support stop bracket for closing it.
   Figure 5. Closing the cable management support stop

   
6. Connect and route the cables, as shown in Figure 6.
   1. Attach the power cords and other cables to the rear of the node.
   2. Route the cables and power cords on the cable management arm and secure them with cable ties or hook-and-loop fasteners.
   Figure 6. Connecting and routing the cables

   
   Note:

   • The location of the cable straps can vary in different systems.
   • Use the cable straps that are provided on the rear of the system to retain the cables and prevent them from sagging.
7. Secure the cables with the hook-and-loop fastener strap, as shown in Figure 7. Cables must be bundled with the hook-and-loop fastener strap to ensure full range of movement of the cable management arm.
   Figure 7. Securing the cables with hook-and-loop fastener strap

   
   Note:

   • Make sure that the cables do not sag below the U space so they cannot interfere with the lower systems.
   • Allow slack in all cables to avoid tension in the cables as the cable management arm moves.
8. Optional: Secure the cable management arm and the node in the rack for shipping, as shown in Figure 8.
   1. If you are shipping the rack with the system installed, or if you are in a vibration-prone area, insert the M6 screws to the rear of the slides.
   2. Use a cable tie to secure the free end of the cable management arm to the rack.
   Figure 8. Securing the cable management arm and node for shipping

   
9. Optional: Install the front screws, as shown in Figure 9.
   1. To slide the node out of the rack, press on the release latches  1 .
   2. When you move the rack cabinet, or if you install the rack cabinet in a vibration-prone area, insert the M6 screws  2  in the front of the node.
   Figure 9. Installing the front screws

   
10. Optional: You can install the cable management arm on the opposite side, as shown in Figure 10.
    1. Press the release buttons  1  and slide the mounting brackets  2  out of the cable management arm.
    2. Then, rotate the cable management arm  3 ,
    3. Flip the mounting brackets  4 ,
    4. Insert the inner bracket (marked with a capital letter I) and outer bracket (marked with a capital letter O) into the cable management arm  5 .
    Figure 10. Installing the cable management arm on the opposite side