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Pinned topic DS3400 "Controller Memory Parity Error"

‏2014-08-06T21:03:44Z | controller ds3400 error memory parity
after error message about hardware of a controller A of a IBM DS3400, i've substitute the controller with another with 1GB of ram preinstalled.
So i replaced memory from 1GB to 512MB on a Controller but iìve received the error "Controller Memory Parity Error".
The memory of controller is now 512MB but from the subsystem information i still read 1GB. I tried to disconnect the controller cache battery for 15 minutes and reinstall the DIMM but nothing.
With command "reset storageSubsystem diagnosticData" i can update the controller data? This command in dangerous for the availability of the entire storage?
The other controller work perfectly...
Is there anybody that can help me? Thanks
Updated on 2014-08-06T21:13:52Z at 2014-08-06T21:13:52Z by EnricoF