HP storageworks HSG80 Reference Manual page 144

CLI Command Descriptions
SET FAILOVER COPY=controller
Configures both controllers to operate in a dual-redundant configuration under
transparent failover mode. This command allows both controllers to access the storage
devices, providing controller fault-tolerant data processing. If one of the two
controllers fail, the devices and any cache attached to the failed controller become
available to and accessible through the other controller.
IMPORTANT: Remove all connections that appear using the SHOW CONNECTIONS
command prior to establishing transparent failover mode.
NOTE: Before putting the controllers in failover mode, remove any previous mode with the SET
NOFAILOVER command.
Syntax
SET FAILOVER COPY=controller
Parameters
There are no parameters for this command.
Switches
COPY=controller
Identifies which controller contains the source subsystem configuration for the
copy. You must specify THIS_CONTROLLER (the one connected to the CLI
maintenance terminal) or OTHER_CONTROLLER. The companion controller
receiving the configuration information restarts after the command is executed.
CAUTION: Make sure you know which controller has the good configuration
information before entering this command. The device configuration information from
the controller specified by the controller parameter overwrites the information on the
companion controller.
• Specify THIS_CONTROLLER to copy the device configuration information
from "this controller" to "other controller."
• Specify OTHER_CONTROLLER to copy the device configuration
information from the "other controller" to "this controller."
Due to the amount of information being passed from one controller to the other,
this command may take up to two minutes to complete.
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