How To Read A Worksheet To Cable Controller-To-Stack Connections For Multipathed Connectivity - Fujitsu ETERNUS AX Series Installation And Cabling Manual

How to read a worksheet to cable controller-to-stack
connections for multipathed connectivity
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 a HX2000 configuration. HX2000 configurations
use a unique worksheet; see the "Controller-to-stack cabling worksheets and cabling examples for common
HX2000 configurations" section.
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.
Note: 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 the "SAS cabling rules" section 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....The port pairs being
skipped to use every other one in the list: 1a/2b and 1c/2d.
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