Take Corrective Action For 5U Enclosures; Table 16 5U Enclosure Corrective Action For Fault Conditions - Seagate Exos X 4006 Series Hardware Installation And Maintenance Manual

Table 15 2U enclosure corrective action for fault conditions (continued)
Symptom
Thermal monitoring and control
Module fault LED is on
and fault LEDs for both
PCMs are on
Increased fan speed is
greater than 12K RPM
when the ambient
temperature is below 23°C
(73.4°F). Factors such as
ambient temperature,
number of installed drives,
and altitude each
influence fan speed.

Take corrective action for 5U enclosures

After you follow the process above and isolate the fault to an area of the storage enclosure or to a particular module, use the
following chart to determine the type of corrective action you should take.

Table 16 5U enclosure corrective action for fault conditions

Symptom
Operator's (ops) panel fault LED for logical faults
Logical fault LED is on
Cause Recommended action
Internal temperature
1. Confirm you have met ambient temperature requirements identified in the
exceeds the present
threshold for the storage
enclosure
2. Remove the PCM with the fault, wait 1 minute, then reseat it.
3. Determine if only one of the PCMs failed or is in the process of failing. Verify all
4. Follow instructions related to increases in fan speed, identified below.
5. Shut down the storage enclosure and investigate before continuing.
Increases in fan speed are
1. Confirm all hardware is properly installed, including blanks.
associated with reaching a
thermal threshold as the
first stage of the thermal
2. Look for airflow restrictions at the front and rear of the storage enclosure.
control process. If you
encounter fan speeds
greater than 12K RPM
when the ambient
temperature is below 23°C
3. Confirm there are no restrictions based on contaminates, such as dust.
(73.4°F), the likely cause is
reduced airflow through
4. Look for excessive re-circulation of heated air from the rear to the front of the
the system.
5. Verify temperature is within product specifications. Refer to
Cause Recommended action
A fault condition related
1. Scan the enclosure event log for specific information for the fault.
to the system application
2. For system application faults, refer to
logic
3. If the above actions do not resolve the fault, isolate the fault to the failing
Environmental Requirements section and that the air flow moves from the
front to the rear of the storage enclosure.
fans are running at a similar RPM. If the impellers of a fan turn more than 2K
RPM slower than the other fan, replace the PCM.
Recommendation: Visually inspect hardware during installation or
replacement to fully engage or secure it.
Recommendation: If a rack door blocks airflow by more than 60%, make sure
it has a front minimum gap of 75mm (3 in) and a rear minimum gap of 152mm
(6 in).
Recommendation: Improve removal of contaminates and keep area clean.
storage enclosure.
Recommendation: Avoid mounting in rack cabinets that are fully enclosed.
regulations.
Recommendation: Reduce the ambient temperature in the room.
component identified in the rear panel area and follow the instructions below.
Chapter 9 Hardware installation and configuration issues
Standards and
Isolate system application faults.
90