Specifications

2–18 Compaq StorageWorks HSG80 Array Controller ACS Version 8.5 Maintenance and Service Guide
IMPORTANT: Note the following before starting the replacement procedures:
■ The new controller hardware must be compatible with the remaining controller hardware.
See the product-specific release notes that accompanied the software release for
information regarding hardware compatibility.
■ The software versions and patch levels must be the same on both controllers.
■ The new cache module must contain the same memory configuration as the module being
replaced.
Replacing a Controller and Cache Module in a
Dual-Redundant Controller Configuration
Use the following steps in “Removing a Controller and Cache Module in a
Dual-Redundant Controller Configuration” and “Installing a Controller and its Cache
Module in a Dual-Redundant Controller Configuration” to replace a controller and its
cache module.
CAUTION: ESD can easily damage a controller, cache module, or DIMM. Wear a
snug-fitting, grounded ESD wrist strap.
Both cache modules
must contain the same cache memory configuration.
Removing a Controller and Cache Module in a
Dual-Redundant Controller Configuration
Use the following steps to remove a controller and its cache module.
1. Connect a PC or terminal to the maintenance port of the operational controller.
The controller connected to becomes “this controller;” the controller being removed
becomes the “other controller.”
2. Disable failover with the following command:
SET NOFAILOVER
3. Remove the program card ESD cover and program card from the “other controller.”
Save them in a static-free place for the replacement controller.
4. Start field replacement utility (FRUTIL) with the following command:
RUN FRUTIL