Communication path redundancy system, the communication path redundancy method and load balancing program

摘要

PROBLEM TO BE SOLVED: To provide a redundant communication path system capable of distributing the load of I/O by making a communication path to an external storage device, which is connected to a plurality of servers in common through a storage network, redundant.;SOLUTION: The redundant communication path system includes a network 100, a plurality of servers 101 connected to the network 100, a storage network 107 connected to the plurality of servers 101, and an external storage device 108 connected to the plurality of servers 101 in common through the storage network 107. When a server 101-1 executes I/O to the external storage device 108 through the storage network 107, the server 101-1 exchanges an I/O request and an I/O completion report NC with another server 101-2 through the network 100 to secure a communication path between another server 101-2 and the external storage device 108 and executes the I/O.;COPYRIGHT: (C)2006,JPO&NCIPI