Brocade Communications Systems Brocade VDX 8770-4 - Manual (Page 64)

44 Brocade VDX 8770-4 Hardware Reference Manual
53-1002563-02
Determining the status of a fan
4
Determining the status of a fan
Complete the following steps to determine the status of a fan.
1. Check the LED indicators on the fan (refer to Figure 10 ). The LED patterns may temporarily
change during POST and other diagnostic tests; for information about how to interpret the LED
patterns, refer to
Table 15 . The Brocade VDX 8770-4 has up to two fans. Be sure to check each
module.
2. Check the fan status using the show environment fan {rbridge-id rbridge-id | all} command.
See Table 12 for possible results from this command. The RPM of each fan is also provided. If
a fan displays absent or faulty, contact the Brocade VDX 8770-4 supplier to order replacement
parts. Both physically absent or faulty could also be the result of the fan not being properly
seated.
You can also use the show system command.
Figure 10 shows a fan unit.
ALM No light
(LED is off) The power supply has not failed. No action required.
Steady amber The power supply has failed. Replace the power supply.
TABLE 13 Power supply LED descriptions (Continued)
LED purpose Color Status Recommended action
1 2