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How to read a worksheet to cable controller-to-stack connections for quad-pathed connectivity - shelves with IOM12/IOM12B modules

Contributors netapp-lisa
PDFs

You can use this example to guide you through how to read and apply a completed worksheet to cable stacks of disk shelves with IOM12/IOM12B modules for quad-pathed connectivity.

About this task

  • This procedure references the following worksheet and cabling example to demonstrate how to read a worksheet to cable controller-to-stack connections.

    The configuration used in this example is a quad-path HA configuration with two quad-port SAS HBAs on each controller and two stacks of disk shelves with IOM12 modules.

  • If you have a single-controller configuration, skip substeps b and d for cabling to a second controller.

  • If needed, you can refer to SAS cabling rules and concepts for information about the controller slot numbering convention, shelf-to-shelf connectivity, and controller-to-shelf connectivity (including the use of port pairs).

Cabling worksheet for quad pathed connectivity
Cabling example for quad pathed connectivity
Steps

  1. Cable port pair 1a/2b on each controller to stack 1:

    This is the multipathed cabling for stack 1.

    1. Cable controller 1 port 1a to stack 1, first shelf IOM A port 1.

    2. Cable controller 2 port 1a to stack 1, first shelf IOM B port 1.

    3. Cable controller 1 port 2b to stack 1, last shelf IOM B port 3.

    4. Cable controller 2 port 2b to stack 1, last shelf IOM A port 3.

  2. Cable port pair 2a/1d on each controller to stack 1:

    This is the quad-pathed cabling for stack 1. Once completed, stack 1 has quad-pathed connectivity to each controller.

    1. Cable controller 1 port 2a to stack 1, first shelf IOM A port 2.

    2. Cable controller 2 port 2a to stack 1, first shelf IOM B port 2.

    3. Cable controller 1 port 1d to stack 1, last shelf IOM B port 4.

    4. Cable controller 2 port 1d to stack 1, last shelf IOM A port 4.

  3. Cable port pair 1c/2d on each controller to stack 2:

    This is the multipathed cabling for stack 2.

    1. Cable controller 1 port 1c to stack 2, first shelf IOM A port 1.

    2. Cable controller 2 port 1c to stack 2, first shelf IOM B port 1.

    3. Cable controller 1 port 2d to stack 2, last shelf IOM B port 3.

    4. Cable controller 2 port 2d to stack 2, last shelf IOM A port 3.

  4. Cable port pair 2c/1b on each controller to stack 2:

    This is the quad-pathed cabling for stack 2. Once completed, stack 2 has quad-pathed connectivity to each controller.

    1. Cable controller 1 port 2c to stack 2, first shelf IOM A port 2.

    2. Cable controller 2 port 2c to stack 2, first shelf IOM B port 2.

    3. Cable controller 1 port 1b to stack 2, last shelf IOM B port 4.

    4. Cable controller 2 port 1b to stack 2, last shelf IOM A port 4.