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
255HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Maintenance and Service Guide
Resolving failed cache error messages
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.
An invalid mirrored cache error message may be displayed after one of the two
following events:
Event 1: After setting the Failover mode
After the Failover mode is set and after the replacement controller restarts, the
replacement controller CLI message indicates that its cache module is invalid.
After a SHOW THIS_CONTROLLER or SHOW OTHER_CONTROLLER
command is submitted, the controller displays one or both of the following cache
conditions:
Cache: Cache is GOOD
Mirrored Cache: Cache is FAILED
Note: This condition cannot be resolved with the CLEAR OTHER_CONTROLLER
INVALID_CACHE DESTROY_UNFLUSHED_DATA command.
To resolve the error message, see Table 15 on page 257.
Caution: The resolution for a failed cache error message in Table 15 on
page 257 involves the interruption of service to the customer. Notify your
manager and customers of this situation,
and make sure that the controllers
are not in use
before proceeding to resolve a failed cache condition.
Avoiding this precaution may result in data loss.
■ Event 2: Before setting the Failover mode
Before Failover mode is set and after the replacement controller restarts
following the Port #5 button reset process (see substep 2c through substep 2f
on page 128), the replacement controller CLI message indicates that the