NEC N8406-019, N8406-020 Sample cascade connection, „Cascading two FC Switch Modules (Blade Enclosure)

Sample cascade connection

„Setting Principal switch only for the FC Switch Module in Blade Enclosure

(SIGMABLADE) must be done. For how to set Principal switch, see "Checking

/Setting Principal Selection Mode" in "Appendix FC Switch Module Setting Features".

„Cascading two FC Switch Modules (Blade Enclosure)

1.One path configuration between the FC Switch Modules

Blade Enclosure #1 Blade Enclosure #2

„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).

2.Two paths configuration between the FC Switch Modules

Blade Enclosure #1 Blade Enclosure #2

„By making cascade connection between FC Switch Modules to two paths,

even if a failure occurs on one cascade path, no influence to I/O operation occur because I/O operation is succeeded by redundant path and no Fabric reconstruction occurs.

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