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3.
Alternate path between the FC Switch Modules
By making cascade connection among all three FC Switch Modules, even if a
failure occurs on one cascade path, no influence to I/O operation occur
because communication between FC Switch Modules can be succeeded by
the alternate path and no Fabric reconstruction occur.
Cascading four FC Switch Modules (Blade Enclosure)
1.
Configuration with minimum number of cascading paths
If a failure occurs on the cascading path between the FC Switch Modules, a
Fabric reconstruction occurs. Influence to I/O operations may occur not only
between the cascading FC Switch Modules but within each FC Switch Module
(each Blade Enclosure).
Blade Enclosure #2
Blade Enclosure #3
Blade Enclosure #1
Blade Enclosure #2
Blade Enclosure #3
Blade Enclosure #4
Blade Enclosure #1