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
254 HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
Resolving invalid cache error messages—serial number
mismatch error messages
An invalid cache error message may display after the SHOW
THIS_CONTROLLER command is submitted. The controller reports that the
cache and mirrored cache with cache are invalid and that the cache should be
installed in a specific controller with the serial number ZGxxxxxxxx.
Caution: Failure to clear an invalid cache message (especially a Cache is
FAILED message)
before setting the Failover mode can result in a recursive
bugcheck error message that renders the controller unusable.
To resolve an invalid cache error message, see Table 14.
Table 14: Resolving an invalid cache—serial number mismatch error message
Description and Instruction
Message
INVALID CACHE - Cache should be installed in controller serial
number xyz
%CER-HSG> This controller ( replacement ) has an invalid cache
module
%CER-HSG> cache modules inconsistent with mirror mode
Resolution 1. Submit the following command from the controller reporting the error message:
CLEAR THIS_CONTROLLER ( replacement ) INVALID_CACHE
DESTROY_UNFLUSHED_DATA
Note: Enter this command again if this condition is not cleared.
2. Set the controller Failover mode by performing one of the following options:
■ Proceed to substep 9b on page 147 in the “Installing cache modules in
dual-redundant controller configurations” section if the error message
occurred during the cache module installation process.
■ Proceed to substep 5b on page 131 in the “Installing array controllers in
dual-redundant controller configurations” section if the error message
occurred during the controller installation process.