Abstract: A non-transitory computer readable recording medium having stored therein a switch controlling program causing a computer to execute a process includes acquiring port information on a switch that comprises a plurality of first and second ports, where the port information including connection destinations of the second ports and being acquired for each of the second ports before swapping the switch for another switch; instructing to close the first ports of the another switch after the switch is swapped; acquiring the port information on the another switch for each of the second ports after the swapping; determining whether there exists the second port whose connection destination is unchanged before and after the swapping; and instructing to open the first port of the another switch, where data being transferred between the opened first port and the second port whose connection destination is unchanged before and after the swapping.

Abstract: A non-transitory computer readable recording medium having stored therein a switch controlling program causing a computer to execute a process includes acquiring port information on a switch that comprises a plurality of first and second ports, where the port information including connection destinations of the second ports and being acquired for each of the second ports before swapping the switch for another switch; instructing to close the first ports of the another switch after the switch is swapped; acquiring the port information on the another switch for each of the second ports after the swapping; determining whether there exists the second port whose connection destination is unchanged before and after the swapping; and instructing to open the first port of the another switch, where data being transferred between the opened first port and the second port whose connection destination is unchanged before and after the swapping.

Abstract: A virtual computer system includes computers (1, 2) each having a first operating system executed when the virtual computer system is built and a second operating system of when each computer operates individually. Each of the computers (1, 2) comprises a booting unit (35A) for booting the first or second operating system, rewriting means for updating the firmware of the computer when the second operating system is booted, means for setting the booting unit as a unit for booting the first operating system, means for re-booting the computer, and means for building a virtual computer system by establishing synchronization at least between one computer and another when the first operating system is booted. Further, means for setting the booting unit as a unit for booting the second operating system when the virtual computer system is built and means for stopping the virtual computer system are provided.

Abstract: A reception unit receives resource information transmitted through a network and constituted by a resource for version-up and an application program which applies the resource and stores the resource information in an operation region of a storage device. A decision unit decides whether an application occasion of the resource stored has come or not. When it is decided that the application occasion has come, an execution unit performs a process of copying the resource information in a maintenance region of the storage device and making the maintenance region valid in the next boot-up operation of a system.

Abstract: A reception unit receives resource information transmitted through a network and constituted by a resource for version-up and an application program which applies the resource and stores the resource information in an operation region of a storage device. A decision unit decides whether an application occasion of the resource stored has come or not. When it is decided that the application occasion has come, an execution unit performs a process of copying the resource information in a maintenance region of the storage device and making the maintenance region valid in the next boot-up operation of a system.