HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Maintenance and Service Guide (EK-G80MS-SA. C01, March 2005)
Controller and Cache Replacement Troubleshooting
259HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
Table 16: 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 failed, you must disable mirrored cache in order to
clear the failed condition. Because unmirroring a controller pair destroys 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 cache
modules in dual-redundant controller configurations” section that starts on
page 139.
5. Complete the instructions for installing a cache module in the “Installing cache
modules in dual-redundant controller configurations” section that starts on
page 142, 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 123, to
remove the controller.
b. Remove the “other controller.”
c. Clear the NV configuration by lifting the Holddown tab on the lithium
battery.
d. See step 6 through step 11 in Table 17 (on page 261) to restore the
minimum operating configuration of the controller. Then proceed to the
“Installing cache modules in dual-redundant controller configurations”
section that starts on page 142 to continue.