IBM Redbooks ServeRAID-MR10M, User Manual

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2-8 ServeRAID-MR10M SAS/SATA Controller Hardware Installation
2.6 Replacing a Failed Controller Containing Data in the
iBBU
The intelligent Battery Backup Unit (iBBU) is a cache memory module
with an integrated battery pack. The module provides an uninterrupted
power source to the module if the power is unexpectedly interrupted
while cached data is still present. If the power failure results from the
failure of the ServeRAID-MR10M controller, then you can move the iBBU
to a new controller and recover the data. The replacement controller
must have a cleared configuration.
Note: See the Warranty and Support Information document for
the replacement battery part number and battery-disposal
instructions.
CAUTION:
The battery is a lithium ion battery. To avoid possible explosion, do not
burn. Exchange only with the IBM-approved part. Recycle or discard the
battery as instructed by local regulations. In the United States, IBM has a
process for the collection of this battery. For information, call 1-800-426-
4333. Have the IBM part number for the battery unit available when you
call. (C007)
Follow these steps to replace a failed controller with data in the
transportable battery backup unit.
Step 1. Review all safety information provided with the server; then,
power down the server and the drives.
Step 2. Remove the failed controller from the system.
Step 3. Remove the iBBU from the failed controller.
Step 4. Insert the iBBU into the replacement controller.
Step 5. Insert the replacement controller into the system.
Step 6. Turn on the power to the system.
The controller then reads the disk configuration into NVRAM
and flushes the cached data to the virtual disks.