Abstract: Occupancy amount of physical resource of a virtual server(VS) is calculated based on maximum physical resource amount indicating performance of a physical server(PS), the occupied virtual resource coefficient indicating relation of physical resource amount used by the VS to the physical resource amount allocated to the VS and the allocated physical resource coefficient indicating relation of the allocated physical resource to the maximum physical resource amount of the PS, and change value of the occupied physical resource amount from a predetermined occupied physical resource amount is calculated based on the calculated occupancy amount and the predetermined occupied physical resource amount.

Abstract: In a computer system wherein plural servers are connected with an external disk device via a network, each server incorporates therein a logic partition module for configuring at least one logic partition in the server, and the operating system stored in the logic partition is booted by the boot disk of an external disk device, the failover operation is performed only for the logic partition affected by a failure when the task being executed by a working server is taken over by another server at the time of the failure occurring in the working server.

Abstract: In a network computer system, recovery may be impossible from a fault when the fault occurs in a network switch in a network or a device such as an external disk device. Provided is a computer system that includes a plurality of servers, a plurality of network, a plurality of external disk devices, and a management computer, in which the management computer detects a fault which is occurred, retrieves an application stop server inaccessible to the used disk due to the fault, retrieves the disk for storing the same contents as contents stored in the disk used by the retrieved application stop server and the external disk device including the disk, retrieves an application resuming server capable of accessing the retrieved external disk device, and transmits an instruction to boot by using the retrieved disk to the retrieved application resuming server.

Abstract: In a computing system where multiple servers are connected through a network and one or more jobs are run, a power reduction facility of a supervisory server relocates jobs according to predetermined conditions, thereby reducing the amount of power consumed by the computing system. For relocating the jobs, the power reduction facility obtains server-related information such as the power properties of the servers constituting the computing system and job-related information such as performance requirements for the jobs which are run in the computing system, and searches for one or more jobs to be relocated and destination servers, based on these server-related information and job-related information, to the extent that the performance requirements for each job are fulfilled. Based on the search results, the jobs are relocated to the destination servers, and servers on which no job is running, as a result of the relocation, are powered off.

Abstract: In a computer system wherein plural servers are connected with an external disk device via a network, each server incorporates therein a logic partition module for configuring at least one logic partition in the server, and the operating system stored in the logic partition is booted by the boot disk of an external disk device, the failover operation is performed only for the logic partition affected by a failure when the task being executed by a working server is taken over by another server at the time of the failure occurring in the working server.

Abstract: In a computing system where multiple servers are connected through a network and one or more jobs are run, a power reduction facility of a supervisory server relocates jobs according to predetermined conditions, thereby reducing the amount of power consumed by the computing system. For relocating the jobs, the power reduction facility obtains server-related information such as the power properties of the servers constituting the computing system and job-related information such as performance requirements for the jobs which are run in the computing system, and searches for one or more jobs to be relocated and destination servers, based on these server-related information and job-related information, to the extent that the performance requirements for each job are fulfilled. Based on the search results, the jobs are relocated to the destination servers, and servers on which no job is running, in consequence of the relocation, are powered off.

Abstract: A management server obtains configuration information of an active server and creates a logical partition in a backup server so as to correspond to the active server. The backup server starts up the created logical partition. And when the created logical partition reaches a predetermined state, the backup server releases allocation of the first processor resource to the logical partition, thereby the logical partition stands by. The management server, when detecting an error occurred in the active server, stops the active server and searches the logical partition having same configuration as the active server in which error is detected, and enables allocation of the first processor resource to the searched logical partition, thereby completing the start-up of the logical partition.

Abstract: In a computing system where multiple servers are connected through a network and one or more jobs are run, a power reduction facility of a supervisory server relocates jobs according to predetermined conditions, thereby reducing the amount of power consumed by the computing system. For relocating the jobs, the power reduction facility obtains server-related information such as the power properties of the servers constituting the computing system and job-related information such as performance requirements for the jobs which are run in the computing system, and searches for one or more jobs to be relocated and destination servers, based on these server-related information and job-related information, to the extent that the performance requirements for each job are fulfilled. Based on the search results, the jobs are relocated to the destination servers, and servers on which no job is running, in consequence of the relocation, are powered off.

Abstract: A proposed fail over method for taking over task that is preformed on an active server to a backup server, even when the active server and the backup server have different hardware configuration. The method for making a backup server take over task when a fault occurs on a active server, comprises steps of acquiring configuration information on the hardware in the active server and the backup server, acquiring information relating the hardware in the backup server with the hardware in the active server, selecting a backup server to take over the task that is executed on the active server where the fault occurred, creating logical partitions on the selected backup server, and taking over the task executed on the active server logical partitions, in the logical partitions created on the selected backup server.

Abstract: This invention provides a method for operational management in a management server of a computer system, the computer system comprising more than one server to be managed and an OS disk image adapted to operate on any one of the servers, the management server being used to manage association between the OS disk image and one of the servers to be managed. The operational management method includes acquiring I/O device recognition information that the OS disk image on a first server to be managed recognizes, then acquiring physical device configuration information that indicates an I/O device configuration of a second server to be managed, and determining, on the basis of the acquired I/O device recognition information and physical device configuration information, whether the OS disk image operates properly when loaded into the second server and executed.

Abstract: Devices unnecessary for deployment are invalidated during the deployment. A method of building a system and a management server for establishing a system according to the present invention have the following configuration. The management server obtains server information from a server connected through a network, refers to the obtained server information to select devices unnecessary for deployment among devices connected to the server, and invalidates the selected devices.

Abstract: A proposed fail over method for taking over task that is preformed on an active server to a backup server, even when the active server and the backup server have different hardware configuration. The method for making a backup server take over task when a fault occurs on a active server, comprises steps of acquiring configuration information on the hardware in the active server and the backup server, acquiring information relating the hardware in the backup server with the hardware in the active server, selecting a backup server to take over the task that is executed on the active server where the fault occurred, creating logical partitions on the selected backup server, and taking over the task executed on the active server logical partitions, in the logical partitions created on the selected backup server.

Abstract: Provided is a computer system that requires only a server administrator for construction thereof and configuration change thereof.

Abstract: The active server A101 notifies its own operating status to the administration server 106, and the administration server 106 acquires a snapshot and copies a disk according to the policy established by a user. When the active server A101 or the active disk 113 fails, the administration server 106 chooses a backup server A104 and a status storage disk A114 to be booted and restarts them by using the snapshot according to the policy.

Abstract: Provided is a failover method performed in a computer system having a first computer which performs an operation, a plurality of standby computers including a first standby computer and a second standby computer, a second computer which has a management module which manages the first computer and the standby computer, and a third computer which manages start and stop of the standby computer. The method including following steps of processing. The third computer acquires configuration information of the first computer, the second computer and the plurality of standby computers from the management module of the second computer. The third computer determines whether an failure occurred in the second computer. The third computer sets up the management module on the second standby computer based on the acquired configuration information in a case of detecting the failure occurred in the second computer.

Abstract: The active server A101 notifies its own operating status to the administration server 106, and the administration server 106 acquires a snapshot and copies a disk according to the policy established by a user. When the active server A101 or the active disk 113 fails, the administration server 106 chooses a backup server A104 and a status storage disk A114 to be booted and restarts them by using the snapshot according to the policy.

Abstract: A technique for determining task allocation for reducing power consumption of an entire system is disclosed. This system includes physical computers, a cooling apparatus for cooling the physical computers, and a power-saving control server for controlling the physical computers and cooling apparatus. The power-saving control server includes a virtual server layout generator which sets up a plurality of sets of task allocations with respect to the physical computers, a server power calculator for calculating power consumption of the physical computers in each task allocation, a physical computer profile used to estimate a heat release amount of the physical computers in each task allocation, a cooling power calculator which computes power consumption of the cooling apparatus, and a virtual server relocator which determines a task allocation with a total of calculated values of the server/cooling power calculators being minimized to be the optimum task allocation for the physical computers.

Abstract: A computing system includes: first and second I/O interfaces that are associated with a server; and an I/O management unit that connects the server with the first and second I/O interfaces. The I/O management unit includes: an I/O buffer; an I/O mapping unit that stores an access request of the server to the first I/O interface in the I/O buffer in response to a change start request of the first I/O interface associated with the server to the second I/O interface; an I/O changing unit that associates the second I/O interface with the server; and an I/O synchronizing unit that converts the access request stored in the I/O buffer into an access request to the second I/O interface, in response to the completion of the association by the I/O changing unit, and executes the converted access request.

Abstract: A computer system having computers executing programs, a management computer managing said computers, and a storage system which can be accessed from said computers via a network, wherein said management computer includes: a storage unit for storing network identity information of said network which is allocated to said computers, application identity information indicating said programs, and area identity information indicating areas in said storage system in which said programs are stored, said network identity information and said area identity information being related to said application identity information, a control unit for sending to said computers said network identity information and said area identity information corresponding to said application identity information, in order to boot programs indicated by said application identity information, in response to entry of a boot request including said application identity information.

Abstract: Reconfiguration plans that cope with various events are produced for a computer system. An administration system for computers and an administration method for computers in accordance with the present invention have a constitution described below. A server system includes plural servers, and a management server that administers the server system is connected to the server system. The management server monitors an event occurring in the server system, produces reconfiguration plans for the server system on the basis of priorities assigned to the plural servers and/or application programs according to the monitored event, selects a reconfiguration plan from the reconfiguration plans under predetermined criteria for selection, and reconfigures the server system according to the selected reconfiguration plan.