Abstract: An information processing apparatus that controls a resource allocation amount for one or a plurality of virtual machines run by a computer, the information processing apparatus includes a memory that stores an allowable index upper limit and index information indicating an association between the resource allocation amount and an index and a processor that, when a virtual machine lacking resources is detected from a resource usage status, increases the resource allocation amount allocated to the virtual machine lacking resources such that an index value calculated according to the index information and the resource allocation amount for the one or a plurality of virtual machines does not exceed the upper limit.

Abstract: A master selecting unit selects master software from pieces of software that perform a computing process. A screen control unit displays an operation screen for the master software that is selected by the master selecting unit on a screen. A software search unit searches, when an instruction operation is detected on the operation screen for the master software, for any piece of software that displays an operation screen that receives the same instruction operation that the operation screen for the master software receives. An operation-content instructing unit instructs the master software and each piece of software that is found by the software search unit about operation content corresponding to the instruction operation that has been detected on the operation screen for the master software.

Abstract: A first device that implements one or more first virtual machines and a second device that implements one or more second virtual machines are communicatively connected. The first device notifies the second device being a communication-connection-destination of the first appliance that the first appliance has been connected to the first device. The first device transmits first data received from the second device to the first appliance, and transmits second data received from the first appliance to the second device. The second device notifies the second virtual machine that the first appliance has been connected when the connection is permitted. The second device transmits data received from the first device to the second virtual machine and transmits data received from the second virtual machine to the first device.

Abstract: A client system using a virtual machine includes: a physical server that includes a CPU, a memory, a bus, and a plurality of bus adapters, manages a plurality of guest OS by a host OS, and operates as a virtual machine. A plurality of input and output units are coupled to the plurality of bus adapters of the physical server respectively. A host OS of the physical server includes a configuration definition table that stores identification numbers of the input and output units in correspondence to guest OSs used by the input and output units. The host OS notifies a guest OS corresponding to an input unit of input instruction information from the input units with reference to the configuration definition table and outputs a processing result of a guest OS to an output unit corresponding to the guest OS.

Abstract: An information processing apparatus that controls a resource allocation amount for one or a plurality of virtual machines run by a computer, the information processing apparatus includes a memory that stores an allowable index upper limit and index information indicating an association between the resource allocation amount and an index and a processor that, when a virtual machine lacking resources is detected from a resource usage status, increases the resource allocation amount allocated to the virtual machine lacking resources such that an index value calculated according to the index information and the resource allocation amount for the one or a plurality of virtual machines does not exceed the upper limit.

Abstract: A first device that implements one or more first virtual machines and a second device that implements one or more second virtual machines are communicatively connected. The first device notifies the second device being a communication-connection-destination of the first appliance that the first appliance has been connected to the first device. The first device transmits first data received from the second device to the first appliance, and transmits second data received from the first appliance to the second device. The second device notifies the second virtual machine that the first appliance has been connected when the connection is permitted. The second device transmits data received from the first device to the second virtual machine and transmits data received from the second virtual machine to the first device.

Abstract: A client system using a virtual machine includes: a physical server that includes a CPU, a memory, a bus, and a plurality of bus adapters, manages a plurality of guest OS by a host OS, and operates as a virtual machine. A plurality of input and output units are coupled to the plurality of bus adapters of the physical server respectively. A host OS of the physical server includes a configuration definition table that stores identification numbers of the input and output units in correspondence to guest OSs used by the input and output units. The host OS notifies a guest OS corresponding to an input unit of input instruction information from the input units with reference to the configuration definition table and outputs a processing result of a guest OS to an output unit corresponding to the guest OS.

Abstract: A master selecting unit selects master software from pieces of software that perform a computing process. A screen control unit displays an operation screen for the master software that is selected by the master selecting unit on a screen. A software search unit searches, when an instruction operation is detected on the operation screen for the master software, for any piece of software that displays an operation screen that receives the same instruction operation that the operation screen for the master software receives. An operation-content instructing unit instructs the master software and each piece of software that is found by the software search unit about operation content corresponding to the instruction operation that has been detected on the operation screen for the master software.

Abstract: A virtual machine system managed by a current host OS virtually operating on hardware is provided that activates a spare host OS by copying the current host OS to a prescribed memory device using a live migration function when the current host OS is activated, notifies the spare host OS of a request issued to the current host OS via a virtual machine monitor, changes a state of the spare host OS, and switches an OS for managing the virtual machine system from the current host OS to the spare host OS, when the current host OS is in an erroneous state.