SATA RAID SOLUTION for Intel® Server Board SE7505VB2

We are trying to install Redhat 9.0, however the SATA RAID 1 is not seems to work. That means it is still using two harddisk.

The main reason is that you have to read what INTEL said here:
support.intel.com/support/motherboards/server/se7505vb2/sb/CS-007392.htm

The main problem is that you got to go to set up the SATA chip set, but not just in bios. Here is the detail!

Serial ATA RAID Mode (Either Striped or Mirrored Set):

Prepare a blank formatted floppy diskette

Download ATARAID.EXE file

Run the ATARAID_Comp.EXE (This operation will extract all files onto the floppy diskette, and make the diskette bootable)
Remove all add-in adapters from the system (Includes any add-in PCI cards)

Enter BIOS Setup program by pressing <F2> during POST
Select the >> Advanced >> OnBoard Devices menu

Confirm the following OnBoard Devices are enabled
OnBoard Serial ATA: [Enabled]
OnBoard NIC1: [Enabled]
OnBoard NIC2(Gbit): [Enabled]

Press <Esc> to return to the Advanced menu

Select the >> Boot menu

Select "Removable Device" and press <Enter> to expand list

Confirm "Legacy Floppy Device" is enabled
(If "!" is present, press <Shift + 1> to enable the boot device
Insert the bootable floppy diskette containing the extracted ATARAID_Comp.EXE files

Press <F10>, and select [Yes] to save configuration changes and exit now?
Press <Ctrl + S> or <F4> when the SiI3112A SATA Raid Controller BIOS appears during POST

Confirm no RAID set exist. If one does exist, you will need to delete the RAID set.
(Warning: If you have data on your hard drives, it will be lost if you delete RAID set. Please use caution when using this utility. It should only be used before the OS is loaded. Once the OS is loaded, do not switch to SATA modes. This may result in a non-functioning system.)

Exit RAID Configuration Utility by pressing <Ctrl + E> and confirm exit by pressing <Y>

Boot to the floppy diskette
Type "ATARAID.EXE -RAID" and press <Enter>

When program has finished, turn off the computer and remove the floppy diskette

Remove the A/C Power Cord from the system for minimum of 10 seconds
Reconnect and power system.

System is now configured for Serial ATA RAID Mode.