You have two RAID items on that motherboard:
- The LSI 1068E 8-Port SAS Controller; RAID 0, 1, 10; RAID 5 optional.
This is the hardware RAID which you want to use.
- 6x SATA2 (3 Gbps) Ports via ICH10R Controller.
The ICH10R has software RAID. This is not the one you want.
The reseller link you provided leads to a drivers for the fake-RAID.
The other link you provided lead to the motherboard and its manual.
From the motherboard manual, page 2-35:
In addition to SATA connections an LSI 1068E SAS controller and eight SAS connectors are located on the X8DA3. To configure LSI SAS RAID settings, please refer to the LSI SAS RAID user guide posted on our website http://www.supermicro/com/manuals/
I think they are referring to the
Quoting from that:
After you have installed hardware components, you must first configure the LSI MegaRAID Software Utility before you install an operating system and other soft-ware drivers.
And a bit further:
To Activate RAID Modes
You can activate a RAID mode by pressing any key in the BIOS setup.
Press CTRL + C to activate the IT mode.
Press CTRL + M to activate the SR mode.
Do this first, then check if Debian needs any additional drivers for this SAS chip.
(I expect it to work out of the box because the 1068E is a few years old and support for ti seem to be quite common. But it never hurts to check.)