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The site PDUs X and Y (
13
and
14
) are powered from two independent power
sources.
In this example, only two redundant ac-power switch units are used, and each
power switch powers one node in each I/O group. However, for maximum
redundancy, use one redundant ac-power switch to power each node in the cluster.
20
IBM System Storage SAN Volume Controller: Models 2145-8F2 and 2145-8F4 Hardware Installation Guide