Cabling the Channel B DS14mk2 or DS14mk4 disk shelf loops

To provide the mirrored storage, you cable the mirrored pool ports on the node to the Channel B modules of the appropriate disk shelf stack.

  1. 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

  2. Cable Channel B for Node A.
    1. Cable the second port for pool 0 (P0-2) of Node A to the first Node B disk shelf Channel B Input port of disk shelf pool 0.
      Note: Both channels of this disk shelf are connected to the same port on each node. This is not required, but it makes your HA pair easier to administer because the disks have the same ID on each node.
    2. Cable the second port for pool 1 (P1-2) of Node A to the first Node B disk shelf Channel B Input port of disk shelf pool 1.
    3. Cable the disk shelf Channel B Output port to the next disk shelf Channel B 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 2c, connecting Channel B output to input, for any remaining disk shelves in each disk pool.
    5. Repeat Substep 2a through Substep 2d for any additional loops on Channel B, Node A, using the even numbered port numbers (P0-4 and P1-4, P0-6, and P1-6, and so on).
  3. Cable Channel B for Node B.
    1. Cable the first port for pool 0 (P0-1) of Node B to the first Node A disk shelf Channel B Input port of disk shelf pool 0.
    2. Cable the first port for pool 1 (P1-1) of Node B to the first Node A disk shelf Channel B Input port of disk shelf pool 1.
    3. Cable the disk shelf Channel B Output port to the next disk shelf Channel B Input port in the loop for both disk pools.
    4. Repeat Substep 3c, connecting Channel B output to input, for any remaining disk shelves in each disk pool.
    5. Repeat Substep 3a through Substep 3d for any additional loops for Channel B, Node B, using the odd numbered port numbers (P0-3 and P1-3, P0-5, and P1-5, and so on).
Proceed to cable the HA interconnect.