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Step 8
Run the WebBIOS Configuration Utility
Run the WebBIOS Configuration Utility to
configure the physical arrays and the logical
drives. When the message Press <Ctrl><H> for
WebBIOS appears on the screen, immediately
press CTRL+H to run the utility.
Note:
Refer to the MegaRAID SAS Software User's
Guide on the MegaRAID Universal Software
Suite CD for detailed steps on configuring
physical arrays and logical drives.
Step 9
Install the Operating System Driver
The RAID controller can operate under various
operating systems, but you must install the
software drivers first.
The MegaRAID Universal Software Suite CD
includes the software drivers for the supported
operating systems, along with documentation.
You can view the supported operating systems on
and download the latest drivers for RAID
controllers from the LSI Logic web site at:
http://www.lsi.com/cm/DownloadSearch.do.
Access the download center, and follow the steps
to download the driver.
Refer to the MegaRAID SAS Device Driver
Installation User's Guide on the MegaRAID
Universal Software Suite CD for details on
installing the driver. Be sure to use the latest
service packs that are provided by the operating
system manufacturer and to review the readme
file that accompanies the driver.
S U P P O R T E D R A I D L E V E L S
The SAS 8704ELP RAID Controller and the SAS 8708ELP
RAID Controller support disk arrays using the following RAID
levels:
• RAID 0 (data striping): Data is striped across all disks in
the array, enabling very fast data throughput. There is no
data redundancy. All data is lost if any disk fails.
• RAID 1 (disk mirroring): Data is written simultaneously
to two disks, providing complete data redundancy if one
disk fails. The maximum array capacity is equal to the
available size of the smaller of the two hard drives.
• RAID 5 (disk striping with distributed parity): Data is
striped across all disks in the array. Part of the capacity
®
PN: 80-00158-01 Rev.A
February 2007
Find a list of LSI Logic Corporation's U.S. distributors, international distributors,
sales offices, and design resource centers on the LSI Logic web site at:
http://www.lsi.com/contacts/index.html
LSI Logic, the LSI Logic logo design, and MegaRAID are registered trademarks of
LSI Logic Corporation. All other brand and product names may be trademarks of
their respective companies.
of each disk stores parity information that reconstructs
data if a disk fails. RAID 5 provides good data throughput
for applications with high read request rates.
• RAID 6 (disk striping with distributed parity across
two disks): Data is striped across all disks in the array
and two parity disks are used to provide protection
against the failure of up to two physical disks. In each row
of data blocks, two sets of parity data are stored.
• RAID 10 (RAID 1 and RAID 0 in spanned arrays): RAID
10 uses mirrored pairs of disks to provide complete data
redundancy. RAID 10 provides high data throughput
rates.
• RAID 50 (RAID 5 and RAID 0 in spanned arrays): RAID
50 uses both parity and disk striping across multiple disks
to provide complete data redundancy. RAID 50 provides
high data throughput rates.
• RAID 60 (RAID 6 and RAID 0 in spanned arrays): RAID
60 uses both distributed parity across two parity disks and
disk striping across multiple disks to provide complete
data redundancy. RAID 60 provides high fault tolerance.
T E C H N I C A L S U P P O R T
For assistance in installing, configuring, or running your SAS
RAID controller, contact LSI Logic Technical Support.
Phone Support:
1-800-633-4545 (North America)
Web Site:
http://www.lsi.com/support
Copyright © 2007 by LSI Logic Corporation. All rights reserved.
LSI Logic products are not intended for use in life-support appliances, devices, or
systems. Use of any LSI Logic product in such applications without written consent
of the appropriate LSI Logic officer is prohibited.
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