How to read a worksheet to cable controller-to-stack connections for multipathed connectivity -
shelves with IOM12 modules
You can use this example to guide you through how to read and apply a completed
worksheet to cable controller-to-stack connections for disk shelves with IOM12 modules
for multipathed connectivity.
Before you begin
Your HA pair or single-controller configuration cannot be an AFF A200, AFF A220, FAS2600 series or
FAS2700 system. These systems use a unique worksheet:
Controller-to-stack cabling worksheets and cabling examples for common AFF A200, AFF A220, FAS2600
series and FAS2700 configurations
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 multipath HA configuration with two quad-port SAS HBAs (eight
SAS ports) on each controller and two stacks of disk shelves with IOM12 modules. Port pairs are cabled by
skipping every other port pair in the worksheet.
When you have more port pairs than you need to cable the stacks in your system, the best
practice is to skip port pairs to optimize the SAS ports on your system. By optimizing SAS
ports, you optimize your system’s performance.
• 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 for information about the controller slot numbering
convention, shelf-to-shelf connectivity, and controller-to-shelf connectivity (including the use of port pairs).
The port pairs are cabled using every other port pair in the worksheet: 1a/2b and 1c/2d.
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