Supported raid levels, Technical support, Copyright notice – Avago Technologies MegaRAID SAS 9280-8e User Manual
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1 Rev. A, July 2009
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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.
Step 8
Run the WebBIOS Configuration Utility
Run the WebBIOS Configuration Utility to
configure the groups and the virtual drives. When
the message Press
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 drive
groups and virtual drives, and encrypting data on
the 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
and download the latest drivers for RAID
controllers from the LSI website at:
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 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.
S U P P O R T E D R A I D L E V E L S
The RAID controllers support 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: RAID 00 is a spanned drive group that creates
a striped set from a series of RAID 0 drive groups.
• RAID 10 (RAID 1 and RAID 0 in spanned groups):
RAID 10 uses mirrored pairs of drives to provide complete
data redundancy. RAID 10 provides high data throughput
rates.
• RAID 50 (RAID 5 and RAID 0 in spanned groups):
RAID 50 uses both parity and drive striping across
multiple drives to provide complete data redundancy.
RAID 50 provides high data throughput rates.
• RAID 60 (RAID 6 and RAID 0 in spanned groups):
RAID 60 uses both distributed parity across two parity
drives and drive striping across multiple drives to provide
complete data redundancy and high fault tolerance.
Note:
Refer to the MegaRAID SAS Software User’s
Guide on the MegaRAID Universal Software
Suite CD for more information about RAID levels.
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
9280-8e or SAS 9280DE-8e RAID controller, contact your
LSI Technical Support representative. Click the following link
to access the LSI Technical Support page for storage and
board support:
From this page, you can send an email or call Technical
Support, or submit a new service request and view its status.
E-mail:
Phone Support:
Note:
The international toll-free number does not
require country-specific access codes.