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HSG80 Array Controller V8.7 Maintenance and Service Guide
Replacement Procedures for BA370 Enclosure Elements
Replacing a Controller in a Dual-Redundant Controller
Configuration
To replace a controller in a dual-redundant controller configuration, follow the
instructions in this section for removing and installing a controller.
Removing a Controller
Use the following steps to remove a controller in a dual-redundant controller
configuration.
CAUTION: ESD can easily damage the controller. Wear a snug-fitting, grounded ESD
wrist strap.
1. Connect a PC or terminal to the maintenance port of the operational controller.
The controller connected to the PC or terminal becomes “this controller”; the
controller being removed becomes the “other controller.”
2. Disable failover and take the controllers out of the dual-redundant configuration
with one of the following commands:
SET NOFAILOVER
or
SET NOMULTIBUS_FAILOVER
3. Remove the program card ESD cover and program card from the “other
controller.”
Save them in an antistatic bag or on a grounded antistatic mat for use with the
replacement controller.
4. Start FRUTIL with the following command:
RUN FRUTIL
5. Enter N(o) to the question about replacing the cache battery.
6. Enter option 1 to remove a controller or cache module.
7. Enter option 2 to remove the “other controller.”
8. Enter Y(es) to confirm the intent to remove the “other controller.”