Avago Technologies MegaRAID SATA 150-4 (523) - Manual (Page 80)

3-32 BIOS Configuration Utility and MegaRAID Manager
Version 2.0 Copyright © 2003–2006 by LSI Logic Corporation. All rights reserved.
3.9 FlexRAID Virtual Sizing
The FlexRAID Virtual Sizing option can no longer be enabled on the
MegaRAID 320-1 or 320-2 controllers. This option allowed the
Windows NT and NetWare 5.1 operating systems to use the new space
of a RAID array immediately after you added capacity online or
performed a reconstruction.
If you have this option enabled on older cards, you need to disable it,
then upgrade the firmware. Perform the following steps to do this:
Step 1. Go to the www.lsilogic.com web site.
Step 2. Download the latest firmware and driver to a diskette or directly
to your system.
The download is an executable file.
Step 3. Unzip the file and extract it to a blank diskette.
Step 4. Boot with a DOS diskette to the DOS prompt.
Step 5. Insert the diskette with the extracted files and type mflash to
flash the firmware.
3.10 Checking Data Consistency
Select this option to verify the data redundancy in logical drives that use
RAID levels 1, 5, 10, and 50. (RAID 0 does not provide data
redundancy.) The parameters of the existing logical drives appear.
Discrepancies are automatically corrected when the data is correct.
However, if the failure is a read error on a data drive, the bad data block
is reassigned and the data is regenerated.
Important: LSI recommends that you run periodic data consistency
checks on a redundant array. This allows detection and
automatic replacement of bad blocks. Finding a bad block
during a rebuild of a failed drive is a serious problem, as the
system does not have the redundancy to recover the data.