Cabling Servers, Workstations, and Storage to the Fibre Channel Hub
31
Cabling Servers, Workstations, and Storage to the Fibre Channel Hub
This section consists of the following:
•
“Cascading Two Hubs (Optional)” on page 31
•
“Using Copper Cabling” on page 32
•
“Using Fiber Optic Cabling” on page 32
Note the following:
•
Only one port of a Fibre Channel Hub can be cabled to a storage processor (SP) in a
Fibre Channel RAID unit. That is, one port of a Fibre Channel Hub can be cabled to
either the A or B port of a Fibre Channel RAID SP.
•
Only one port of a Fibre Channel Hub can be cabled to a JBOD unit. That is, one
Fibre channel Hub can be cabled to either LCC A or LCC B, but not both.
Cascading Two Hubs (Optional)
To set up a loop with up to 18 nodes, you can cascade two hubs. Cascading hubs requires
the optional cascade cable.
All ports are identical; each can be used for an NL_port connection or for a cascaded hub
connection. For convenience, generally, ports on the front of the two hubs are cabled, as
shown in Figure 3-5.
Figure 3-5
Cascaded Hubs (Example)
For two short loops, you can segment one hub into two loops with five ports each.
Commands for segmenting and unsegmenting the hub (accomplished completely in
software), are given in “Segmenting and Unsegmenting the Hub” on page 50 in Chapter 4.
10BaseT
Console
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REA
R
10BaseT
Console
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R
