Patent ID: 8677353

Claim:
A provisioning system comprising: a plurality of servers comprising processors which operate a first application system and a second application system, at least one of the plurality of servers being configured as a shared server that configures a plurality of virtual machines; a standby constructing unit that starts a standby virtual machine on the shared server with a resource amount smaller than the resource amount allocated to an active virtual machine, which is provisioned for operating the first application system on the shared server, and prepares provisioning to operate a target application system comprising one of the first application system and the second application system on the standby virtual machine when a provisioning request for the target application system is predicted; and a provisioning executing unit that changes the resource allocation amounts of the active virtual machine and the standby virtual machine and performs the provisioning, wherein the standby constructing unit calculates a probability of the provisioning request being generated after a predetermined time from a current point of time, based on a load state of a corresponding server which operates the target application system, and predicts that the provisioning request is generated when the calculated probability is equal to or greater than a threshold value.