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Controller-to-stack cabling worksheet and cabling example for a quad-path HA configuration with two quad-port SAS HBAs - shelves with IOM12 modules

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You can use the completed controller-to-stack cabling worksheet and cabling example to cable a quad-path HA configuration that has two quad-port SAS HBAs.

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

  • If needed, you can refer to How to read a worksheet to cable controller-to-stack connections for quad-pathed connectivity.

  • The cabling example shows controller-to-stack cables as solid or dashed to distinguish controller A and C port connections from controller B and D port connections.

    drw controller to stack cable type key
  • Cables in the cabling examples and their corresponding port pairs in the worksheets are color-coded to distinguish connectivity to each stack in the HA pair.

    drw controller to stack cable color key non2600
  • The cabling example visually distinguishes the two sets of multipathed cabling needed to achieve quad-pathed connectivity for each controller to each stack in an HA pair or single-controller configuration.

    The first set of multipathed cabling is referred to as “multipathed”. The second set of multipathed cabling is referred to as “quad-pathed”. The second set of cabling is referred to as “quad-pathed” because completing this set of cabling gives you the quad-pathed connectivity.

    drw controller to stack quad pathed connectivity key
  • The worksheet example shows port pairs designated for multipathed cabling or quad-pathed cabling to the applicable stack.

    Each port pair designated for multipathed cabling is encircled by an oval that is the color associated with the stack it is cabled to. Each port pair designated for quad-pathed cabling is encircled by a rectangle that is the color associated with the stack it is cabled to.

Quad-path HA with two quad-port SAS HBAs and two multi-shelf stacks

The following worksheet and cabling example uses port pairs 1a/2b (multipathed) and 2a/1d (quad-pathed) for stack 1, and port pairs 1c/2d (multipathed) and 2c/1b (quad-pathed) for stack2.

drw worksheet qpha slots 1 and 2 two 4porthbas two stacks nau
drw qpha slots 1 and 2 two 4porthbas two stacks nau