Determining the status of a fan, Table 13, Table 14 – Brocade VDX 8770-4 Hardware Reference Manual User Manual
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Brocade VDX 8770-4 Hardware Reference Manual
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Determining the status of a fan
4
For absent or faulty indications, if the power supply is not improperly seated, contact the Brocade
VDX 8770-4 supplier to order replacement parts. You may also want to do this if the indication is
predicting failure.
describes the power supply LED patterns and the recommended actions for those
patterns.
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
). The LED patterns may temporarily
change during POST and other diagnostic tests; for information about how to interpret the LED
patterns, refer to
. 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.
TABLE 13
Output for show environment power command
Output
Explanation
OK
Power supply is functioning correctly.
absent
Power supply is not present. Could also be
improperly seated.
unknown
Unknown power supply unit installed.
predicting failure
Power supply is present but predicting failure.
faulty
Power supply is present but faulty (no power cable,
power switch turned off, fuse blown, or other
internal error). Could also be improperly seated.
TABLE 14
Power supply LED descriptions
LED purpose
Color
Status
Recommended action
AC OK
No light
(LED is off)
Power supply does not have
incoming AC power.
If using AC power, ensure that the
power supply is firmly seated, the
AC power source is live, and the
power cable is connected.
Steady green
Power supply has incoming AC
power.
No action required.
DC OK
No light
(LED is off)
The DC output is not in the
acceptable range.
Ensure that the power supply is
firmly seated.
Steady green
The DC output is in the
acceptable range.
No action required.
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.