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MegaRAID SAS 9285-8e RAID Controller Quick Installation Guide
Supported RAID Levels
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LSI Corporation
December 2010
Reinstall the computer cover, and reconnect the power cords. Turn on the power to
the computer. Make sure that the power is turned on to the SAS devices and the
SATA II devices before or at the same time that the power to the host computer is
turned on. If the power is turned on to the computer before it is turned on to the
devices, the computer might not recognize the devices.
The firmware takes several seconds to initialize. During this time, the controller
scans the ports.
8. Run the WebBIOS Configuration Utility
Run the WebBIOS Configuration Utility to configure the groups and the virtual
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 Guide for detailed steps on
configuring groups and virtual drives.
9. Install the Operating System Driver
The 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 and download the latest drivers for RAID controllers
from the LSI 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 Guide on the
MegaRAID Universal Software Suite CD for more information about 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.
This RAID controller supports drive groups using the following RAID levels:
RAID 0 (data striping): Data is striped across all drives in the group, enabling very
fast data throughput. There is no data redundancy. All data is lost if any drive fails.
RAID 1 (drive mirroring): Data is written simultaneously to both drives in the drive
group, providing complete data redundancy if one drive fails. RAID 1 supports an
even number of drives from 2 to 32 in a single span.
RAID 5 (drive striping with distributed parity): Data is striped across all drives in
the group. Part of the capacity of each drive stores parity information that
reconstructs data if a drive fails. RAID 5 provides good data throughput for
applications with high read request rates.
RAID 6 (drive striping with distributed parity across two drives): Data is striped
across all drives in the group and two parity drives are used to provide protection
against the failure of up to two drives. In each row of data blocks, two sets of parity
data are stored.
RAID 00 (data striping across RAID 0 drive groups): RAID 00 is a spanned drive
group that creates a striped set from a series of RAID 0 drive groups.
Supported RAID Levels
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