RAID or Redundant Array of Independent Disks combines multiple disks into a single storage pool that the operating system views as a single drive. While enterprise systems use hardware RAID with a ...

Apple offers a couple of software RAID solutions for people interested in either creating a larger disk out of two, or mirroring two disks together for data redundancy in the event of a drive failure.

I don't have actual experience with software raid, but I don't think that'll be possible. Also, I've heard only bad things wrt software raid in general. I'd really recommend looking into a hardware ...