Fujitsu MAA3182FC Series, Manual

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C141-E054-02EN 1 - 2
1.1 Topologies in Fibre Channel Interface
Three kind of topologies are defined in ANSI standards. (Arbitrated Loop, Fabric and Point-to-
Point)
The drive only supports one of them, which is Arbitrated Loop (FC-AL).
Figure 1.1 shows the example of connection for disk drives in FC-AL.
Figure 1.1 Example of FC-AL connection
BC are port bypass circuits on the back plane commonly, where Node mean the Target or
initiator.
Each Loop signal is transmitted by one-way direction and made of electrical wires called
“link”.
Each node is connected to the loop vial the port which the node owns. Each port consists of
the receiver which receives information from the loop and the transmitter which sends
information.
In this example, each node has two ports building two independent loops. Information is
propagated between the nodes on the loop through serial signals.
This section describes the Node, Port, BC and link forming the above diagram and the signals
propagated on the link.