| 摘要 |
An information processing system capable of dynamic CPU replacement regardless of the function of OS, and a method and a program for controlling the same. The information processing system comprises an information processor and a service processor. The service processor instructs MMCs of all cell boards in a partition that includes a cell board to be removed and an MMC of a replacement cell board to be incorporated to copy data from a memory of the cell board to be removed to a memory of the replacement cell board. Besides, when receiving a write instruction during the copying operation, the MMCs write the same data written to the cell board subject to replacement also to the memory of the replacement cell board. After the copying operation has been finished, the operations of CPUs in the partition are forcefully suspended. Subsequently, the service processor instructs BIOS to copy inside information of the CPU in the cell board subject to replacement into the CPU in the replacement cell board. When the copying operation has been finished, the service processor swaps information on the cell board subject to replacement for information on the replacement cell board, which concern OS control such as logical IDs stored outside the CPUs. Thus, the OS recognizes the replacement cell board as the replaced cell board.
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