Avago Technologies MegaRAID SAS 8204ELP - Manual (Page 50)

2-14 MegaRAID SAS Hardware Installation
Copyright © 2005-2007 by LSI Logic Corporation. All rights reserved.
2.5 Replacing a Failed Controller Containing Data in the
intelligent Transportable Battery Backup Unit 02
The MegaRAID intelligible Transportable Battery Backup Module 2
(LSIiTBBU02) is a cache memory module with an integrated battery
pack. The module provides an uninterrupted power source to the module
if power is unexpectedly interrupted while cached data is still present. If
the power failure is the result of the MegaRAID SAS RAID controller itself
failing, then the LSIiTBBU02 can be moved to a new controller and the
data can be recovered. The replacement controller must have a
cleared configuration.
Follow these steps to replace a failed controller with data in the
transportable battery backup unit.
Step 1. Turn off the power to the system and to the drives.
Step 2. Remove the failed controller from the system.
Step 3. Remove the LSIiTBBU02 from the failed controller.
Step 4. Insert the LSIiTBBU02 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 cache data to the virtual disks.
Note: Refer to the MegaRAID Battery Backup Unit User’s Guide
for installation instructions for the LSIiTBBU02.
2.6 After Installing the RAID Controller
After you install MegaRAID SAS RAID controller, you must configure the
RAID controller and install the operating system driver. The MegaRAID
SAS Software User’s Guide instructs you on the configuration options
and how to set them on your MegaRAID SAS RAID controller. The
MegaRAID SAS Device Driver Installation User’s Guide provides detailed
installation instructions for operating system drivers.