International Business Machines Corporation

Andrew D Martin

Timothy A Moran

Richard Alan Bordoli

Christopher W Bulmer

A storage area network comprises: one or more replicating source and target storage volumes accessible by one or more hosts; a volume replication status checker for determining an active replication relationship between a source storage volume and a target storage volume; and a volume visibility engine for setting the target storage volume to be hidden from a host if the target storage volume is visible to the host and has a determined active relationship. The volume replication status checker is further for determining an inactive replication relationship between a source storage volume and a target storage volume; and the volume visibility engine is further for setting the target storage volume to be visible to a host if the target storage volume is hidden from the host and has a determined inactive replication relationship.

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Romsey, United Kingdom

Andrew D Martin