RAID 1 SET UP WITH SSD AND 2 X SATA HD's

Hi all

I am going to buy a new desktop barebones and want the new Win 8.1 OS to install on an SSD 120GB so that I get faster boot-ups. Together with the SSD I want to include two SATA 3 HD's connected in RAID 1

1] Just not sure how or if RAID 1 will actually work with three drives as above. Will all three drives work together, for RAID 1, or would I have to ditch the SSD and only have two SATA 3 HD's ?

2] I have experienced two HD corruptions already and one Windows OS corruption on two previous PC's. I am looking for long term drive and data and OS stability Will a new RAID 1 set up cause my data and OS to perform with greater stability as I tend to hang on to PC's and HD's for a long time before upgrading?

thanks