HP StorageWorks X9320 Administrator's Manual page 11

To ensure continuous data access, X9000 Software provides manual and automated failover
protection at various points:
Server. A failed node is powered down and a designated standby server assumes all of its
segment management duties.
Segment. Ownership of each segment on a failed node is transferred to a designated standby
server.
Network interface. The IP address of a failed network interface is transferred to a standby
network interface until the original network interface is operational again.
Storage connection. For servers with HBA-protected Fibre Channel access, failure of the HBA
triggers failover of the node to a designated standby server.
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