This message was posted on behalf of Intel Corporation
Let me tell you first that this particular board S2600WT doesn't have M.2 ports so what you are asking is not possible at all. You can check this on the following document page 4: http://download.intel.com/support/motherboards/server/sb/intelr_server_board_s2600wt_tps_r1_0.pdf
For M.2 available boards like the S2600CW the M.2 drives could only be used as bootable storage device. Despite of that the drive cannot be part of any RAID volume and won't be seen by any RAID card.
Hope this helps.