"Critical Error: Memory retention failure, unflushed cache lost!!! - Solution"
Symptom A system equipped with a ServeRAID 8i controller could experience one of the following error messages: 1. In ServeRAID Manager application or IBM Director or RaidEvtA.log: "The battery-backup cache device needs a new battery: controller 1" 2. In the Controller n Config.txt: "Battery status ........Failed" 3. On the display during POST: !!!CRITICAL ERROR: Memory retention failure, unflushed cache lost!!! Affected configurations The system may be any of the following: * xSeries MXE-460, Type 8874, any model * xSeries 460, Type 8872, any model * xSeries 366, Type 8863, any model * xSeries 306m, Types 8849 and 8491, any model * xSeries 260, Type 8865, any model * xSeries 206m, Types 8485 and 8490, any model The system is configured with the following ServeRAID option(s): * ServeRAID-8i Controller: o Option part number 13N2227, replacement part number 13N2233 o Option part number 39R8729, replacement part number 39R8731 Solution : ServeRA