User Manual

Storage System Hardware Components
78 Enterprise Virtual Array 3000 User Guide
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 Channel
cables. The port function depends upon the loop. See Figure 34.
I/O Module Status Displays
Three green LEDs on the I/O modules display the status. See Figure 35. The LED
status displays for an operational I/O module are shown in Table 10. The status
displays for a nonoperational I/O module are shown in Table 11.
\
1 Loop A bottom
port
2 Loop A top port
3 Loop B bottom port
4 Loop B top port
Figure 34: Input and output ports
CXO7954A
3 1
4 2
1 Top port status LED
2 Power status LED
3 Bottom port status LED
Figure 35: I/O module status LEDs
CXO7488A
1
2
3