This is not exactly a problem.Its just an alert stating that the threshold was cross. The threshold can be changed if this happens frequently.
If you need to change the threshold settings follow the netapp Kb "https://kb.netapp.com/support/index?page=content&id=3010964"
Also check the OnCommand Unified Manager Performance Advisor Administration Guide "https://library.netapp.com/ecm/ecm_download_file/ECMP1217275" page no 85, to know how the load_total_mbps parameter is calculated.
Hope this helps.
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