Thanks for joining the Chipset community.
I understand you would like to set RAID array on your computer.
I regret to inform you that the Intel H81 chipset does not support Intel® Rapid Storage; therefore, you cannot create any RAID volume on your system.
Please take a look at product specifications here: ARK | Intel® H81 Chipset (Intel® DH82H81 PCH)
If you still need RAID on the computer, please check this link: http://www.intelraid.com/files/RAID_Product_Matrix.pdf