Operation condition determination device, magnetic recording/reproducing device, and magnetic recording/reproducing system

Provided are an operation condition determination device, a magnetic recording/reproducing device, and a magnetic recording/reproducing system capable of determining a more appropriate operation condition. According to one embodiment, an operation condition determination device includes a storage unit and a processing unit. The storage unit is capable of storing a plurality of classifications relating to information corresponding to the vibration state of the magnetic recording/reproducing apparatus, and a plurality of setting parameter sets relating to the operation of the magnetic recording/reproducing apparatus. The plurality of set parameter sets correspond to the plurality of classifications. The processing unit acquires first data including information obtained by measuring the vibration state of the magnetic recording and reproducing device. The processing unit is capable of acquiring one of the plurality of setting parameter sets from the storage unit, the one of the plurality of setting parameter set