A non-transitory computer-readable storage medium storing therein an information sharing program for causing a computer to execute a process includes storing, in a storage, conversion information including first processing request information for issuing a processing request to a first processing processor that operates on a first physical machine, first operating environment information relating to an operating environment of the first physical machine and corresponding to the first processing request information, and second operating environment information relating to an operating environment of a second physical machine and corresponding to second processing request information for issuing a processing request to a second processing processor that operates on the second physical machine, and when a virtual machine that operates on the first physical machine transfers to the second physical machine, causing the second physical machine to hold the conversion information.