Alarm Information
For the alarm, we can check it in the event file as below:

Handling Process
1. Collect the logs of the system on the device manage page
2. Check the message log files according to the time when the alarm was reported, before that time, we can find lots of errors about the PCIE and IOC as below:
There are little records for PCIE
There are lots of records for IOC (here I only select part of them)

Root Cause
With the configuration file, we can see the version of the device is V300R002C10SPC100, sometimes, the IOC chip in the FC interface will received some invalid internal register value, and then the FC driver will reset the interface in order to recover the communication automaticallySolution
We suggest patching the system software by the patch V300R002C10SPH102, the link is as below:
http://support.huawei.com/enterprise/softdownload.action?lang=en&idAbsPath=fixnode01|7919749|7941815|21430818|21462748|21122039&pid=21122039&vrc=21123646|21141531|21325125|21623002&show=showVDetail&tab=bz&bz_vr=21141531&bz_vrc=&nbz_vr=21141531Suggestions
None