STORAGE SYSTEM WITH HIGH AVAILABILITY CONTROL INTERFACE, HOST COMPUTER USED THEREFOR, AND COMPUTER STORED WITH DRIVER PROGRAM EXECUTED BY COMPUTER

摘要

PROBLEM TO BE SOLVED: To reduce the number of components necessary for multiplexing of data transfer path by sharing a control path for a data transfer path. SOLUTION: A duplex driver in a host computer C11, controls in data transferring between the host computer C11 and a disk array device C2, by switching a path F led to a data transfer interface P4 of a disk array device C2 via a cable F11, SAN 10 and a cable F2 from a data transfer interface P1 of the host computer C11 and a path E from a control interface P2 of the host computer C11 led to a control interface P5 of the disk array device C2 via a cable E11, LAN 20 and a cable E2, as a data transfer path.