Cabling the Channel A DS14mk2 or DS14mk4 disk shelf loops

To begin cabling the disk shelves, you must connect the appropriate pool ports on the node to the Channel A modules of the disk shelf stack for the pool.

  • This procedure uses multipath HA, which is required on all systems.
  • This procedure does not apply to SAS disk shelves.

    For cabling SAS disk shelves in an HA pair , see the Universal SAS and ACP Cabling Guide.

  1. Complete your port list.
  2. Review the cabling diagram before proceeding to the cabling steps.
    • The circled numbers in the diagram correspond to the step numbers in the procedure.
    • The location of the Input and Output ports on the disk shelves vary depending on the disk shelf models.

      Make sure that you refer to the labeling on the disk shelf rather than to the location of the port shown in the diagram.

    • The location of the Fibre Channel ports on the controllers is not representative of any particular storage system model; determine the locations of the ports you are using in your configuration by inspection or by using the Installation and Setup Instructions for your model.
    • The port numbers refer to the list of Fibre Channel ports you created.
    • The diagram only shows one loop per node and one disk shelf per loop.

      Your installation might have more loops, more disk shelves, or different numbers of disk shelves between nodes.


    This graphic is described by the surrounding text

  3. Cable Channel A for Node A.
    1. Cable the first port for pool 0 (P0-1) of Node A to the first Node A disk shelf Channel A Input port of disk shelf pool 0.
    2. Cable the first port for pool 1 (P1-1) of Node A to the first Node A disk shelf Channel A Input port of disk shelf pool 1.
    3. Cable the disk shelf Channel A Output port to the next disk shelf Channel A Input port in the loop for both disk pools.
      Note: The illustration shows only one disk shelf per disk pool. The number of disk shelves per pool might be different for your configuration.
    4. Repeat Substep 3c, connecting the next Channel A output to the next disk shelf Channel A Input port for any remaining disk shelves in this loop for each disk pool.
    5. Repeat Substep 3a through Substep 3d for any additional loops for Channel A, Node A, using the odd-numbered port numbers (P0-3 and P1-3, P0-5, and P1-5, and so on).
  4. Cable Channel A for Node B.
    1. Cable the second port for pool 0 (P0-2) of Node B to the first Node B disk shelf Channel A Input port of disk shelf pool 0.
    2. Cable the second port for pool 1 (P1-2) of Node B to the first Node B disk shelf Channel A Input port of disk shelf pool 1.
    3. Cable the disk shelf Channel A Output port to the next disk shelf Channel A Input port in the loop for both disk pools.
    4. Repeat Substep 4c, connecting Channel A output to input, for any remaining disk shelves in each disk pool.
    5. Repeat Substep 4a through Substep 4d for any additional loops on Channel A, Node B, using the even-numbered port numbers (P0-4 and P1-4, P0-6, and P1-6, and so on).
Proceed to cable the Channel B loops.