Seagate Exos CORVAULT Hardware Installation And Maintenance Manual page 62

Table 6 Corrective action for fault conditions (continued)
Symptom
Fault-Rear panel LED is on
and a system fan fault LED
is on
Fault-Rear panel LED is on
and a PSU fault LED is on
Fault-Rear panel LED is on
and an amber CM fault LED
is on
Thermal monitoring and control
Fault-Rear panel LED is on
and all system fan LEDs
are on
62 Chapter 6 Hardware installation and configuration issues
Cause
A fault condition related to
the system fan
A fault condition related to
the PSU, such as a power
fault condition
A fault condition related to
the CM
Internal temperature
exceeds the present
threshold for the storage
enclosure
Recommended action
1. Select one of the following actions:
For instances where both PSU fault LEDs are on, see the Thermal
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Monitoring section of this table.
If only one system fan is failing, remove the system fan, wait one (1) minute,
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then reseat the system fan.
2. If the system fan is still failing, replace it within the specified two (2) minutes.
1. Verify AC mains connections to the PSU are live.
2. Confirm the redundant PSU is properly functioning.
3. Select one of the following actions:
If both are failing, follow shut down instructions and power off the system
l
enclosure by removing power to both PSUs. Do not power on until after you
successfully replace them both.
If only one PSU is failing, remove the power cord, wait one (1) minute, then
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reseat the power cord.
4. If the PSU is still failing, remove it, wait one (1) minute, then reseat it.
5. If the PSU is still failing, replace it within the specified six (6) minutes.
6. If the power fault condition persists, contact Seagate for support.
1. Restart the CM with a CLI or WBI command.
2. Confirm the redundant CM is properly functioning.
3. Select one of the following actions:
If both are failing, follow shut down instructions and power off the system
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enclosure by removing power to both PSUs. Do not power on until after you
successfully replace them both.
If only one CM is failing, remove the power cord, wait one (1) minute, then
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reset the CM.
4. If the CM is still failing, and the failure is related to a CM host port, follow the
steps associated with system application faults below.
5. If the CM is still failing, remove the power cord, wait one (1) minute, then reseat
the CM.
6. If the CM is still failing, replace it within the specified eight (8) minutes with a
new one.
7. If installing a new CM that is still failing, remove it, inspect connections for bent
pins, reinstall it, then check the event log for errors.
1. Confirm you have met ambient temperature requirements identified in the
Environmental Requirements section and that the air flow moves from the front
to the rear of the storage enclosure.
2. Confirm you fully closed both main bay and auxiliary bay covers so latches fully
engage.
3. Determine if one of the fans failed or is in the process of failing. Verify all fans
are running at a similar RPM. If the impellers of a fan turn more than 2K RPM
slower than the other fans, replace the fan.
4. Follow instructions related to increases in fan speed, identified below.
5. Shut down the storage enclosure and investigate before continuing.