If you ran a RAID 1 setup, it would be like having 2 identical drives, including infections.
The advantage of a RAID 1 setup, is that if one of the drives died, you would have the spare all set up, and ready to go.
I'd get another internal drive, and then use a program, like Acronis
, to image the drive.
do a clean install, load your programs, and image the drive.
When you get infected, do a restore using the image, and you've got your Operating System, and all programs, loaded, and ready to go.