Wanting SSD plus two HHD's in raid 1

[ZJD]

Is this possible? I was wanting OS on SSD and HDD's mirrored for secure back up of data.
Thank you for your reply.

 

[GhislainG]

It depends on your motherboard. Set the SATA controller in RAID mode, connect only the SSD, install the OS. Once done, add the hard disks and configure them in RAID 1.