EMC Connectrix B Series Hardware Reference Manual page 43

In Web Tools, check the Fan Status icon background color. It will
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be either yellow or red if the fan has failed. When the fan is
functioning correctly, the background color is green.
Type the fanShow command at the command prompt to display
◆
fan status as shown below:
switch:admin> fanshow
Fan 1 is OK, speed is 7105 RPM
Fan 2 is OK, speed is 7258 RPM
Monitoring System Compenents
Maintaining the DS-5000B
43