STORAGE VIRTUALIZATION DEVICE AND COMPUTER SYSTEM USING THE SAME

摘要

PPROBLEM TO BE SOLVED: To provide a storage vertialization device that is to be connected to a host computer performing multi-path control, in which even if a failure is generated in the path between a physical storage device and the storage vertialization device occurs, faults such as frequent switching of a path used by a host computer will not generate, and to provide a computer system performing multi-path control that uses the device. PSOLUTION: This device comprises a path failure detection means 24, capable of detecting the occurrence of a failure in the actual access to physical storage devices X and Y via paths 16a, 16b, 17a and 17b by paths, and a target control means 26 for blocking a target 10a or 10b, corresponding to the path in which the failure is detected by the path failure detection means 24 with respect to the host computer 11. PCOPYRIGHT: (C)2007,JPO&INPIT