Storage apparatus and fan control method and fan control program of storage apparatus

A computer-readable medium including a fan control program for controlling a fan of a storage apparatus provided with two or more controller modules controlling a data transfer with a host machine and a data transfer with a physical memory device, two or more power source modules supplying a power to said physical memory device and said controller module and having a fan, and a chassis storing said physical memory device, said controller modules and said power source modules,

• wherein, in order to control the fan of said power source module, a processing portion in said controller module is operated as a fan control portion which monitors a state of other controller module and said power source module, rotates the fan of said power source module corresponding to the module in which a failure is detected at a first speed which is higher than a normal rotational speed when the failure of said other controller module and said power source module is detected, and rotates the fan rotated at said first speed at a second speed which is higher than said first speed when it is detected that said module in which the failure is detected is detached.