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Figure 23 I/O module locations

1. I/O module A

2. I/O module B

The I/O modules are major components in the Fibre Channel loop. Each module has two ports that

can both transmit and receive data for bidirectional operation. Activating a port requires connecting a

transceiver to the port via ﬁbre optic cables. The por t function d epends upon the loop (see Figure 2 4).

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3 1

4 2

Figure 24 Input and output ports

1. Loop A bottom port

2. Loop A top port

3. Loop B bottom port

4. Loop B top port

I/O module status displays

The three green LEDs on the A and B I/O mod ules display the status. The LED status displays for an

operational I/O module are shown in Table 1 0. Table 11 shows the status displays for a non operational

I/O module.

Storage system hardware components

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Hp 3000 Enterprise Virtual Array Manual de usuario Pagina 62