Patent ID: 7711983

Claim:
A fail over method implemented by a management server on a computer system including a management server, one or more active servers performing tasks, and one or more backup servers for taking over at least one of the tasks when a fault occurs on at least one of the one or more active servers, wherein one or more logical partitions are created on the one or more backup servers, and the one or more backup servers includes a resource mapping program, at least one of the one or more backup servers executing the resource mapping program executed by an operating system in each of the logical partitions created on the backup server; and the fail over method comprising: a relation acquisition step for acquiring hardware configuration information included in the one or more active servers and the one or more backup servers, and acquiring hardware relation information showing a relation between the hardware included in the one or more backup servers and the hardware included in the one or more active servers; a backup server selecting step for selecting a backup server to take over the at least one of the tasks that is performed on the one or more active servers in which a fault occurred, based on the hardware relation information and the hardware configuration information of the backup server and the one or more active servers when the fault has occurred in the one or more active servers; a partition creating step for creating logical partitions on the selected backup server based on the hardware relation information and the hardware configuration information on the one or more backup servers and the one or more active servers; and a takeover step for taking over the at least one of the tasks that is performed on the one or more active servers, to logical partitions created on the selected backup server.