An allocating method is executed by a computer. The allocating method includes transmitting to any one given apparatus among multiple apparatuses capable of executing an identical process and respectively having a different processing performance, a command for the process; duplicating the command and transmitting resulting duplicated commands to an apparatus group that is not executing the process and among the apparatuses; measuring for the given apparatus and each apparatus of the apparatus group, a utilization rate acquired when the command is executed; identifying based on the utilization rate for the given apparatus, an apparatus to be switched among the apparatus group; and switching a transmission destination of the command, from the given apparatus to the apparatus to be switched.