Routing cables using the CMA

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About this task

Routing of power and data cables for the JBOD is integral to successful rail kit installation and rackmount installation of the enclosure. Cables must be correctly installed and routed to facilitate efficient operation and in-rack servicing of the enclosure.

This procedure describes the routing of cables through the CMA, including using the CMA baskets and the CMA storage shelf located at the rear of the enclosure.

Procedure

  1. Install the data cables and route them through the CMA brackets.
    1. Rotate the CMA cable capture arms so they are out of the way of the data cable routing.
    2. Route data cables 1–5 onto the CMA shelf and through the CMA brackets in the order and configuration shown below.
    3. Secure the routed cables with one hand, while installing additional cables until data cables 1–5 are installed.
    4. Rotate the outer cable capture arm close over data cables 1–5, ensuring it seats in the C-flange in between the two cable capture arms.
    Note: This model of the Disk Enclosure does not contain an IOM in slot 1. Thus, disregard the red cables in the figures below.
    Installing - cable 1-5
  2. Rotate the inner CMA cable capture arm into the C-bracket to secure the rest of the data cables. The outer CMA cable capture arm may need to be pushed down in the C-bracket to allow the inner cable capture arm to seat properly. The CMA bracket may need to be shifted slightly in order for the thumbscrew to find the PEM thread in the CMA shelf. Secure the thumbscrew.
    Note: This model of the Disk Enclosure does not contain an IOM in slot 1. Thus, disregard the red cables in the figure below.
    Installing - securing cables
  3. Install the PSU cables.
    Refer to the details provided beneath the sub-steps, noting that the top view details represent the CMA shelf.
    1. Remove the M3 panhead screw from the PSU cable clip assembly, and set it aside for re-installation.
    2. Install the right-angle C19 connectors into the PSUs.
    3. Route the cables as shown, ensuring they lay flat on the CMA shelf and through the PSU cable-clip assembly.
    4. Reinstall the M3 panhead screw from Step 3a, while torquing the screw to 0.56 N-m (5 lbf-in).
    Note: This model of the Disk Enclosure does not contain an IOM in slot 1. Thus, disregard the red cables in the figure below.
    Installing - PSU cables
  4. Route cables through CMA baskets.
    1. Route cables through the first two baskets, ensuring minimal cable crossover to maximize space
    2. Use all available space on the CMA shelf to make the first 180º bend into the first CMA basket.
    3. Keep pairs of dual SAS cables parallel and close together.
    4. After all cables (including PSU cables) are routed through the first two CMA baskets, route them around a 180º bend into the remaining four CMA baskets.
      Installing - route cables through baskets