Recording device, recording method, recording program, and magnetic tape

A recording method executed by a computer, the method comprising:

• acquiring, for attached information attached to each of a plurality of recording target data recorded on a recording medium, a first relevance degree which is a relevance degree between pieces of the attached information according to a frequency at which data other than the recording target data attached with information having the same contents as the attached information is read out within a period determined in advance;
• deriving, for each combination of the plurality of recording target data included in the plurality of recording target data, a second relevance degree which is a relevance degree between pieces of data representing a possibility that the plurality of recording target data included in the combination is read out within the period based on the first relevance degree;
• and
• classifying the plurality of recording target data into groups based on the second relevance degree and performing control of recording the classified data on the recording medium for each group.

A non-transitory computer-readable storage medium storing a recording program causing a computer to execute a process comprising:

• acquiring, for attached information attached to each of a plurality of recording target data recorded on a recording medium, a first relevance degree which is a relevance degree between pieces of the attached information according to a frequency at which data other than the recording target data attached with information having the same contents as the attached information is read out within a period determined in advance;
• deriving, for each combination of the plurality of recording target data included in the plurality of recording target data, a second relevance degree which is a relevance degree between pieces of data representing a possibility that the plurality of recording target data included in the combination is read out within the period based on the first relevance degree;
• and
• classifying the plurality of recording target data into groups based on the second relevance degree and performing control of recording the classified data on the recording medium for each group.