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Chapter 2: Loop Configuration With the Fibre Channel Hub
Dual-Loop Configuration
In a dual-loop configuration, each host or storage enclosure is connected to each of two
hubs, or to the separate segments of a segmented hub.
Figure 2-3 diagrams examples that use Fibre Channel RAID storage; each loop is
connected to a separate storage processor (SP).
Figure 2-3
Dual-Loop Configurations With Fibre Channel RAID Storage
You can connect the Fibre Channel Hub to either port in an SP. Both SP ports in a Fibre
Channel RAID DPE cannot be connected to the same hub.
Figure 2-4 shows an example of Fibre Channel Hub cabling with one storage unit and
several servers.
FC Hub A
FC Hub B
Loop B
Loop A
Loop B
Loop A
Loop A
Loop B
FC RAID storage
Node 1
Node 2
FC Hub A
FC Hub B
Loop A
Loop B
Loop A
Loop A
Loop B
FC RAID storage
Node 1
Node 2
SP B
SP A
Loop B
SP B
SP A
SP B
SP A
