COMPUTER SYSTEM AND METHOD FOR AUTONOMOUSLY CHANGING SUCCESSION DESTINATION IN FAIL-OVER

摘要

PPROBLEM TO BE SOLVED: To achieve the optimal fail-over in an NAS. PSOLUTION: This computer system is provided with: a first computer; a second computer; a third computer; and a storage device connected through a network to those computers. When receiving an access request from a client computer connected to those computers to the storage device, the first computer executes the requested access, and transmits a response to the access request to the client computer, and the second computer decides whether any failure is occurred in the first computer, and acquires the load information of the second computer, and acquires the load information of the third computer from the third computer, and when the acquired load information fulfills prescribed conditions, the second computer transmits a change request to the third computer, and when receiving the change request from the second computer, the third computer decides whether or not any failure has been occurred in the first computer. PCOPYRIGHT: (C)2009,JPO&INPIT