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The S3900 Is Powered Off Because of the High Temperature in an Equipment Room

Publication Date:  2014-09-23 Views:  120 Downloads:  1
Issue Description
The I2000 detects that the S3900 has a high temperature and cannot be accessed.
The S3900 is powered off, so its alarms cannot be viewed. On the I2000, the following alarms are displayed.
  • Alarms indicating a high temperature of the S3900 controller enclosure
  • Alarms indicating an extremely high temperature of the S3900 controller enclosure
  • Alarms indicating a high temperature of the S3900 disk enclosure
  • Alarms indicating an extremely high temperature of the S3900 disk enclosure
  • Alarms indicating a high temperature of the S3900 disks

NOTE: If an equipment room has a high temperature, three alarms will be generated indicating that the temperature of the S3900 disk enclosures is too high, the temperature of the S3900 disk enclosures is extremely high, and the temperature of the S3900 disks is too high. However, the controller enclosures have been powered off due to a high temperature before the three alarms are generated. Therefore, the three alarms may appear or not appear.

Alarm Information
None
Handling Process
1. Check the temperature of the equipment room. If the temperature is abnormal, adjust it to the normal range, and then go to step 2. If the temperature is normal, directly go to step 2.
2. Press the Power button on the controller enclosure to power on the storage system. Wait 10 minutes and observe the Power indicator on the front panel of the controller enclosure. If the indicator is steady green, the power-on succeeds, and then go to step 3. If the indicator is blinking green, go to step 4.
3. Resume the host services. Log in to the ISM to check whether there are alarms remaining in the storage system. If there are, clear the alarms according to their handling suggestions. The S3900 over-temperature fault is rectified.
4. Use an SSH file transmission tool (such as the Secure File Transfer Client) to respectively log in to controller A and controller B of the S3900. Export all files in the /OSM/log/cur_debug/ directory and the /ISM/log/cur_debug/ directory, package the files, and send them to Huawei storage R&D engineers for troubleshooting.

Check that the storage system can be powered on successfully.
Root Cause
The S3900 has a temperature monitoring mechanism to check the temperature of the device and environment. This mechanism protects the proper device running and eliminates device damage caused by a high temperature. See the monitoring mechanism details in attachment.

The possible causes of the over-temperature include:
  • The heat dissipation of the equipment room is insufficient.
  • The heat dissipation system of the S3900 is abnormal.
  • A component of the S3900 is faulty, causing an incorrect monitoring result.

Check the temperature of the equipment room.
If the temperature is normal, power on the S3900 to check whether the power-on succeeds.
If the power-on succeeds, the fault is rectified. If the power-on fails, a component in the S3900 may be faulty. (The fault may be caused by the over-temperature or may occur on the component itself.) Collect system logs to diagnose the fault.
 

Suggestions
None

END