[CentOS] C7: How to configure raid at install time

Hi all!

I'm still on C6. I'm using a RAID1 configuration (Linux software RAID)
and I'd like to either use the same one, or possibly configure it on
new drives (larger) when I upgrade to C7. (I'm really feeling the need
to move off C6.)

But it isn't at all obvious how one would do a new RAID1 setup in
Anaconda, and I don't find any user reports or other info on this
in the WIKI or forums (fora, properly, if I recall my high school
Latin).

Can anyone provide (or give pointers to) a good recipe for doing this?

thanks!

Fred
-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us ----------------------------
                    Do you not know? Have you not heard? 
    The LORD is the everlasting God, the Creator of the ends of the earth. 
  He will not grow tired or weary, and his understanding no one can fathom.
----------------------------- Isaiah 40:28 (niv) -----------------------------