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Cabling the disk shelf alternate control path ports

The alternate control path (ACP) uses the ACP ports on the disk shelves to connect to the storage controllers. Having a control path that is separate from the data path increases reliability and simplifies troubleshooting.

About this task

The ACP cabling uses standard CAT6 Ethernet cables.

Steps

  1. Connect the private management port e0P of controller 1 in an HA pair to the ACP port with the square symbol on the first disk shelf.
    The e0P port is labeled with a wrench and padlock symbol (Image shows the e0P port label.).
  2. Connect the ACP port with the round symbol to the next ACP port with a square symbol.
    Continue in a daisy chain until all ACP ports for the shelves used by the HA pair are connected.
  3. Connect the final ACP port with the round symbol to the private management port e0P of controller 2 in the HA pair.
  4. Repeat for the other HA pairs in the cluster.
    Example

    The following diagram displays the ACP cabling for DS424x disk shelves.


    This diagram shows the ACP cabling for a FAS80xx system.

    The following diagram displays the ACP cabling for DS2246 disk shelves.


    This diagram shows the ACP cabling for a FAS80xx system using DS2246 disk shelves.