Removing the cable chains

Left and right cable chains for each drive drawer in the DS460C drive shelf allow the drawers to slide in and out. Before you can remove a drive drawer, you must remove both cable chains.

Before you begin

About this task

Each drive drawer has left and right cable chains. The metal ends on the cable chains slide into corresponding vertical and horizontal brackets inside the enclosure, as follows:
  • The left and right vertical brackets connect the cable chain to the enclosure's midplane.
  • The left and right horizontal brackets connect the cable chain to the individual drawer.
Note: For a helpful overview of this procedure, watch the following video, which shows how to remove and replace the cable chains in a comparable 60-drive system that is powered down: https://forums.netapp.com/videos/3967.

Steps

  1. Put on antistatic protection.
  2. From the rear of the drive shelf, remove the right fan module, as follows:
    1. Press the orange tab to release the fan module handle.
      The figure shows the handle for the fan module extended and released from the orange tab on the left.
      1 fan module handle
    2. Using the handle, pull the fan module out of the drive shelf, and set it aside.
  3. Manually determine which of the five cable chains to disconnect.

    The figure shows the right side of the drive shelf with the fan module removed. With the fan module removed, you can see the five cable chains and the vertical and horizontal connectors for each drawer. The callouts for drive drawer 1 are provided.

    1 Cable chain
    2 Vertical connector (connected to the midplane)
    3 Horizontal connector (connected to the drive drawer)

    The top cable chain is attached to drive drawer 1. The bottom cable chain is attached to drive drawer 5.

  4. Use your finger to move the cable chain on the right side to the left.
  5. Follow these steps to disconnect any of the right cable chains from its corresponding vertical bracket.
    1. Using a flashlight, locate the orange ring on the end of the cable chain that is connected to the vertical bracket in the enclosure.
      1 Orange ring on the vertical bracket
    2. Disconnect the vertical connector (connected to the midplane) by gently pressing on the center of the orange ring and pulling the left side of the cable out of the enclosure.
    3. To unplug the cable chain, carefully pull your finger toward you approximately 1 inch (2.5 cm), but leave the cable chain connector within the vertical bracket.
  6. Follow these steps to disconnect the other end of the cable chain:
    1. Using a flashlight, locate the orange ring on the end of the cable chain that is attached to the horizontal bracket in the enclosure.

      The figure shows the horizontal connector on the right and the cable chain disconnected and partially pulled out on the left side.

      1 Orange ring on horizontal bracket
      2 Cable chain
    2. Gently insert your finger into the orange ring.
      The figure shows the orange ring on the horizontal bracket being pushed down so that the rest of the cable chain can be pulled out of the enclosure.
    3. Pull your finger toward you to unplug the cable chain.
  7. Carefully pull the entire cable chain out of the drive shelf.
  8. From the back of the drive shelf, remove the left fan module.
  9. Follow these steps to disconnect the left cable chain from its vertical bracket:
    1. Using a flashlight, locate the orange ring on the end of the cable chain attached to the vertical bracket.
    2. Insert your finger into the orange ring.
    3. To unplug the cable chain, pull your finger toward you approximately 1 inch (2.5 cm), but leave the cable chain connector within the vertical bracket.
  10. Disconnect the left cable chain from the horizontal bracket, and pull the entire cable chain out of the drive shelf.