Avago Technologies MegaRAID SAS 8204ELP - Manual (Page 44)

2-12 MegaRAID SAS Hardware Installation
Copyright © 2007 by LSI Corporation. All rights reserved.
2.5 Replacing a Failed Controller Containing Data in the
LSIiTBBU03
The MegaRAID intelligent Transportable Battery Backup Module 03
(LSIiTBBU03) 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 LSIiTBBU03 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 LSIiTBBU03 from the failed controller.
Step 4. Insert the LSIiTBBU03 into the replacement controller.
Step 5. Insert the replacement controller into the system.
Step 6. Turn off the power to the system and to the drives.
The controller then reads the disk configuration into NVRAM
and flushes cache data to the virtual disks.
Note: Refer to the MegaRAID 1078 Battery Backup Unit User’s
Guide for installation instructions for the LSIiTBBU03.
2.6 After Installing the RAID Controller
After MegaRAID SAS RAID controller installation, you must configure the
MegaRAID SAS 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.