A non-transitory medium recording an information processing program causing a computer to execute procedures, the procedures includes receiving, as input, positional information that indicates a position of a part of the data file from the reference position, searching a second management information item corresponding to the input, searching a first management information item corresponding to the input and the searched second management information item, and accessing the part that is among the parts of the data file and stored at a position indicated by the searched first management information item; calculating, based on a frequency of access to the accessed part, a distribution of frequencies of access to the parts associated with the first management information items; and updating, based on the distribution of the frequencies, the positional information indicated by the second management information items and first management information items.