Win 10 raid 1 across 3 drives?

I have 3 of the high failure rate seagate 3tb hdd's. I have enough space for my use and the hardware won't do it so i would like to raid 1 them in software with a separate ssd OS . Win 10 only seems to be able to emulate a raid 5 in their "pool" instead of mirroring all three. Is there a way to do this without buying a raid card (I'm out of pci/e slots anyway - itx)...

Thanks.