HSG60 and HSG80 Controller and HSx80 Cache Module Replacement Procedures for Array Controller Software V8.7x-x Release Notes

Replacing HSx80 Cache Modules in Single and Dual-Redundant Controller Configurations
50 HP StorageWorks HSG60 and HSG80 Controller and HSx80 Cache Module Replacement
Procedures for Array Controller Software V8.7x-x Release Notes
 9. For the operational controller, complete the following substeps:
 a. Connect a PC or terminal to the maintenance port.
Caution: In substep 9b below, entering the appropriate SET command is
critical. Enabling an incorrect Failover mode can cause loss of data and incur
system down time.
Verify the original failover configuration, and use the appropriate SET
command to restore this configuration.
Note: After you enter the appropriate SET command, the controller restarts. A
controller restart can take as long as 60 seconds, indicated by the temporary cycling of
the port LEDs and a flashing Reset button.
 b. Re-establish the previous Failover mode by entering one of the following
commands:
SET FAILOVER COPY=THIS_CONTROLLER
or
SET MULTIBUS_FAILOVER COPY=THIS_CONTROLLER
The SET command copies the subsystem configuration from “this
controller” to the “other controller.”
 c. Verify the failover configuration by entering the following command:
SHOW THIS_CONTROLLER
SHOW OTHER_CONTROLLER
 d. Verify that the controller cache and, if enabled, mirrored cache are good.
If either the cache or mirrored cache is not good, refer to Table 3 through
Table 5 starting on page 52.
 e. Disconnect the PC or terminal from the controller maintenance port.