VIRTUALIZATION SYSTEM, CONTROL SERVER, VIRTUAL MACHINE ARRANGEMENT METHOD, AND VIRTUAL MACHINE ARRANGEMENT PROGRAM

摘要

PROBLEM TO BE SOLVED: To continue operation without reducing a resource pool total amount in maintenance or failure of a physical host machine.SOLUTION: A visualization system 100 includes a plurality of hosts enabling a virtual machine to operate, and a control server 100 for controlling the virtual machine. One or more hosts constitute one or more resource pools for creating the virtual machine, and also constitute a recovery pool to be a resource pool shared in each resource pool. The recovery pool is used in maintenance or failure of a host.