| 摘要 |
A node 1 and a node 2 are in a mutual failover relationship and share information used in failover through a shared LU. Of filesystems FS 1 A, FS 1 B that are mounted at the node 1 , the actions of level 1 are allocated to FS 1 A and the actions of level 2 are allocated to FS 1 B. The level 1 filesystem FS 1 A is taken over to the node 2 simultaneously with commencement of failover. The level 2 filesystem FS 1 B is taken over to the node 2 when an access request for FS 1 B is generated after commencement of failover. In this way, business services with high availability can be restarted at an early stage.
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