Installing a Cable Tray

Prerequisites

• All high-density disk enclosures have been installed.
• The following installation tools and materials are ready:
  • M3 screws
  • Phillips screwdrivers
  • Protective gloves
  • Cable trays

Procedure

1. Arrange cable trays so that both ends of each cable tray are on the same side, as shown in Figure 5-63.
   Figure 5-63 Arranging cable trays
   

2. Insert the two sides of the left cable tray to the same side of the ball bearing guide rail and the high-density disk enclosure.
   1. Insert the upper left of the cable tray into the high-density disk enclosure. See step (1) in Figure 5-64.
   2. Insert the lower left of the cable tray into the bracket of the ball bearing guide rail. See step (2) in Figure 5-64.
   • In Figure 5-64, the "L" in a cable tray indicates that the cable tray must be installed on the left side of the high-density disk enclosure from the rear view.
   • In Figure 5-64, the "R" in a ball bearing guide rail indicates the right side of the cabinet from the front view.
   Figure 5-64 Inserting the left cable tray
   

3. Use a Phillips screwdriver to fasten M3 screws to secure the left cable tray.
   1. Use a Phillips screwdriver and M3 screws to secure the lower left of the cable tray. See step (1) in Figure 5-65.
   2. Adjust the lower left of the cable tray so that the bottom of the cable tray is against the limiting latch. See step (2) in Figure 5-65.
   3. Use a Phillips screwdriver and M3 screws to secure the upper left of the cable tray. See step (3) in Figure 5-65.
   Figure 5-65 Installing a left cable tray
   

4. Insert the two sides of the right cable tray to the same side of the ball bearing guide rail and the high-density disk enclosure.
   1. Insert the upper right of the cable tray into the high-density disk enclosure. See step (1) in Figure 5-66.
   2. Insert the lower right of the cable tray into the bracket of the ball bearing guide rail. See step (2) in Figure 5-66.
   • In Figure 5-66, the "R" in a cable tray indicates that the cable tray must be installed on the right side of the high-density disk enclosure from the rear view.
   • In Figure 5-66, the "L" in a ball bearing guide rail indicates the left side of the cabinet from the front view.
   Figure 5-66 Inserting the right cable tray
   

5. Use a Phillips screwdriver to fasten M3 screws to secure the right cable tray.
   1. Use a Phillips screwdriver and M3 screws to secure the lower right of the cable tray. See step (1) in Figure 5-67.
   2. Use a Phillips screwdriver and M3 screws to secure the upper right of the cable tray. See step (2) in Figure 5-67.
   Figure 5-67 Installing a right cable tray
   

6. Route and bind the cables on the cable tray.
   1. Bind all the mini SAS HD electrical cables on the right, as indicated by 1 in Figure 5-68.
   2. Bind all the power cables on the right to the handle of the fan module, as indicated by 2 in Figure 5-68.
   3. Bind all the cables on the right (including mini SAS HD electrical cables, power cables, and PGND cables) to the front of the cable tray, as indicated by 3 in Figure 5-68.
   4. Route cables along the trough of the cable tray and bind the cables, as indicated by 4 in Figure 5-68.
   5. Route cables out of the trough of the cable tray and bind the cables, as indicated by 5 in Figure 5-68.

   Repeat the previous steps to route and bind cables onto the left cable tray.

   • Evenly divide the cables connected to the storage device into two groups. Place the left group of cables into the troughs of the left cable tray, and the right group into those of the right.
   • To route a 5 m mini SAS HD electrical cable across three cabinets, use the underfloor and side cabling methods, and do not use the overhead cabling method.
   Figure 5-68 Routing cables on the cable trays
   

7. Install the spring pins to the left and right cable trays to secure them.
   1. Pull up the spring pin, as shown in step (1) in Figure 5-69.
   2. Adjust the cable trays to allow the stretchable guide rail of one cable tray to insert into the support of the other cable tray, as shown in step (2) in Figure 5-69.

   When the spring pin aligns with the hole in the support, the spring pin can automatically disconnect, and the installation of the spring pin is completed.

   Figure 5-69 Installing the spring pin
   

8. Check the cable tray installation.
   • Loosen the captive screws on the front panel of a high-density disk enclosure. Pull the high-density disk enclosure out of the cabinet and slide the high-density disk enclosure into the cabinet several times and check whether the cable trays extend correctly.
   • If yes, the cable trays are installed correctly. If no, slightly adjust screws that secure the cable trays.