Hardware RAID Support
The servers provide hardware RAID support through on-board SAS2 RAID controllers. Each controller enables you to create up to two logical disk volumes consisting of two or more redundant disk drives. The following table identifies the hardware RAID controllers built into each server.
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Note - RAID 1e and RAID 10 are functionally equivalent. RAID 1e requires an odd number of drives (minimum three). RAID 10 requires an even number of drives (minimum four).
Some servers also support REM controllers that provide hardware RAID capabilities. Documentation for Oracle's REM controllers is available at: http://docs.oracle.com/cd/E19946-01/index.html.
There are four sets of RAID management utilities you can use with the on-board SAS2 controllers provided in these servers.
FCode-Based RAID Utility
You can use FCode-based commands provided with the on-board controller to display targets and manage logical volumes on the server. You enter these commands at the OpenBoot prompt.
The examples of RAID shown in this document rely on the controller's FCode-based commands, unless otherwise specified.
sas2ircu Utility
You can use the LSI SAS2 2008 RAID Management Utility sas2ircu at the Oracle Solaris command prompt to manage RAID functionality for the on-board SAS2 controllers. The sas2ircu utility can configure RAID 0, RAID 1, RAID 1e, and RAID 10.
Note - With sas2ircu, when you specify RAID 1e, there must be an odd number of target drives (minimum three). When you specify RAID 10, there must be an even number of target drives (minimum four).
The sas2ircu utility for Oracle servers, together with user documentation, are available on the LSI website at:
http://www.lsi.com/sep/Pages/oracle/index.aspx
 | Caution - When you get firmware updates for the on-board SAS controllers, you must acquire them from Oracle's support site, https://support.oracle.com. Firmware applied to the on-board SAS controllers that was obtained from any other location or any vendor other than Oracle is not supported. |
raidconfig Commands
You can use the raidconfig commands contained in the Oracle Hardware Management Pack. Use the Oracle Server CLI Tools component to create and manage RAID volumes on the server. To use these commands, download and install Oracle Hardware Management Pack software that supports the server. To install the software, refer to the Oracle Hardware Management Pack Installation Guide for your version at:
http://www.oracle.com/goto/ohmp/docs
RAID Capabilities in Oracle Enterprise Manager Ops Center
You can create RAIDs and manage existing RAIDs with Oracle Enterprise Manager Ops Center. If you reconfigure an existing RAID with Oracle Enterprise Manager Ops Center, the contents of the disks in the original RAID will be lost.
For more about Oracle Enterprise Manager Ops Center, see Oracle Enterprise Manager Ops Center Overview.