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Fault Alarms About OceanStor SXX00T V1&SX900 Optical Transceivers Are Reported and Then Cleared in a Short Time

Publication Date:  2018-10-17 Views:  91 Downloads:  0
Issue Description
At a site, an S5500T V1 storage system's SFP optical transceivers are not connected to optical fibers. Fault alarms are frequently reported and then automatically cleared in a short time without manual intervention.
Alarm Information
The collected storage log file contains the following information:

Handling Process
Analyze storage logs as follows:

1.Go to the /Event directory of the log package, open the Event.txt file, and search for alarm ID 0xe020b0003. It is found that optical transceiver fault alarms are reported but cleared in a short time.

2.Go to the /Config directory of the log package, open the Config.txt file, find out the corresponding ports, and view their information. It is found that their Link status is Link Down and Vendor name is Hisense.

Information about port H3 on controller A is as follows:



Information about port H3 on controller B is as follows:



From the previous information, it can be inferred that the problem exists. 
Root Cause
The time sequence crosstalk occurs in optical transceivers that are not connected to optical fibers. As a result, the optical transceivers' sending power becomes abnormal. After detecting the abnormality, the storage system reports alarms. In the next period of optical transceiver check, the sending power becomes normal and alarms are cleared.
Solution
Such alarms are falsely reported. No fault is found in the storage hardware. Based on the software version, implement the corresponding policy:

Version Policy
V100R005C02SPC300 Install the V100R005C02SPH305 hot patch.
V100R005C30SPC700 Install the V100R005C30SPH701 hot patch.
Other versions Upgrade the software version to V100R005C30SPC700 and install the V100R005C30SPH701 hot patch. 

END