DISK ARRAY CONTROLLER, INFORMATION PROCESSOR, CONTROL METHOD OF DISK ARRAY CONTROLLER, AND CONTROL METHOD OF INFORMATION PROCESSOR

摘要

PPROBLEM TO BE SOLVED: To prevent breakage of a prescribed program of an OS or the like. PSOLUTION: Agreement between IDs 1 and IDs 2 is confirmed by an ID agreement confirmation part 13 if a start instruction of the OS is detected by a start instruction detection part 12. When at least one of the IDs 1 is different from the other IDs 1 and at least one of the IDs 2 is different from the other IDs 2, and IDs 1 and IDs 2 coincide with each other in respective HDDs 4, a majority vote-type RAID constructing part 15 is allowed to construct a majority vote-type RAID, and IDs stored in HDDs 4 and a RAM are updated to another IDs, and the OS is started after the completion of this update. PCOPYRIGHT: (C)2007,JPO&INPIT