New build with Asus P8Z77-V-lk. Was intending to use Samsung 840 series SSD as boot drive with (2) WD Red drives in raid 1 array. SSD controller needs to be set to AHCI mode while raid array needs to be set to Raid.
Does this motherboard have one controller thus unable to use both SSD and (1) raid array? When I change it to Raid setting - it will not boot into windows. When I leave the setting to ACHI - boots fine but single WD Red drives are discovered and not RAID array.
I'm not really the very best person to help, but I might have some insight. I've used Intel fakeraid a fair bit.
Basically, what you need to do -- what I normally do -- is set the drive controller to RAID mode, then use whatever hotkey (usually like Ctrl+R or Ctrl+J) to enter the RAID setup utility when booting. Set up your RAID array(s), then reboot and install Windows. You definitely can have drives that are not part of an array; I've done that plenty of times.
I don't know if you can change from AHCI to RAID mode on an already-setup Windows install without confusing the heck out of the bootloader.
i7-4790K (NH-C14), 4x8GB DDR3-1866 CL9, GA-Z97MX-GAMING 5, SAPPHIRE TRI-X OC 290X, 2x 256GB Q Series / 128GB Vertex 4 / 3x3TB DT01ACA, CX750M (PSU), VG248QE, 3x M2060SWD2, MIMO 720F, Majestouch-2 (red) / Vengeance M95