In an office, during the power-on of a two-node N8300 with the S5500 as the storage unit, the buzzer alarms on the S5500. The management software displays that port 02 of controller A has low optical transmitting power. The working parameter of the optical module exceeds the normal range.
Optical fibers are often used to connect the back-end storage units of the NAS device. The reason for abnormal optical module working is that the SFP module is faulty, optical fiber quality is poor, or the HBA port of the NAS engine is faulty.
Optical fibers are often used to connect the back-end storage units of the NAS device. Therefore, when the device reports an alarm of abnormal optical signal receiving, check whether the optical module, optical fibers, and HBA are faulty.