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

Troubleshooting
56 HP StorageWorks HSG60 and HSG80 Controller and HSx80 Cache Module Replacement
Procedures for Array Controller Software V8.7x-x Release Notes
Table 5: Resolving a Failed Cache Error Message (Event 2)
Details
Message
%CER-Atop> This controller (replacement) has an invalid cache
module
Resolution
Caution: If the cache has failed, you must disable mirrored cache in order to
clear the failed condition. Because unmirroring a controller pair will destroy
all persistent reservation bits in the controllers, you must halt all host activity to
this controller pair before proceeding.
Complete the following steps to resolve an invalid cache module error message.
1. Connect a PC or terminal to the maintenance port of the replacement controller if
not already connected. If you are returning to this step after attempting to resolve a
failed cache condition, proceed to step 6 below.
2. Halt all host I/O activity to the controller pair.
3. Unmount all units.
4. Complete the instructions for removing a cache module in the “Removing an
HSx80 Cache Module from Dual-Redundant Controller Configurations” section on
page 41.
5. Complete the instructions for installing a cache module in the “Installing an HSx80
Cache Module in Dual-Redundant Controller Configurations” section on page 45,
and then proceed to the next step.
6. Verify whether the cache and mirrored cache are good (“Cache is GOOD”),
and then complete one of the following two options:
■ If the cache is good, return the controller pair to service. The resolution of the
failed cache condition is complete.
■ If the cache is failed, complete the following substeps.
a. Complete substep 3a through substep 3d, which start on page 22, to
remove the controller.
b. Remove the “other controller.”
c. Clear the NV configuration by lifting the holddown tab on the lithium
battery.
d. Refer to step 6 through step 11 in Table 6 to restore the minimum
operating configuration of the controller. Then proceed to “Installing an
HSx80 Cache Module in Dual-Redundant Controller Configurations” on
page 45 to continue.
e. After restoring defaults, complete the instructions for installing a controller
in the “Installing an HSG60 or HSG80 Controller in Dual-Redundant
Controller Configurations” section that starts on page 26.
f. Return controller pair to service.