IBM Redbooks ServeRAID-MR10i, User Manual

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6-14 Using the Intelligent Battery Backup Unit
5. Remove the iBBU from the failed controller.
6. Install the iBBU on the replacement controller.
Note: See Section 5.1, “Installing the iBBU on the ServeRAID-
MR10i Controller” for instructions on how to install an iBBU
on your controller and install the controller in a system.
7. Install the replacement controller in the computer and connect it to
the drives.
8. Replace the computer cover and reconnect the power cords. Turn on
the power to the computer.
The replacement controller will then read the disk configuration into
NVRAM and flush the cache data to the logical drives.
6.4 Resolving a Configuration Mismatch
If the replacement controller has a previous configuration, this message
displays during the power-on self-test (POST):
Unresolved configuration mismatch between disk(s) and NVRAM
on the adapter
A configuration mismatch occurs when the configuration data in the
NVRAM and the configuration data on the drives are different. To resolve
this, you need to update the configuration data in the NVRAM with the
data from the drive. To do so, follow these steps:
1. Press CTRL+M when prompted during boot-up to access the
BIOS CU.
2. Select Configure-> View/Add Configuration.
This gives you the option to view both the configuration on the
NVRAM and on the drive.
3. Select the configuration on the drive.
4. Press ESC, and select YES to update the NVRAM.
5. Press ESC to exit, and then reboot the computer.