Software RAID on a pink Pogoplug?

[meaninglessvanity]

I've searched through everywhere I can think of, and can't find anything about this. I have a Pogoplug with Arch Linux ARM Linux on it, and I would like to add a second drive as a RAID 1 mirror. Does anyone know of any documentation about how one would set that up?

[pepedog]

This looks simple enough, assuming none of the OS is on a raid partition
http://nixcraft.com/getting-started-tutorials/432-setting-up-raid-1-mirroring-running-remote-linux-system.html

[meaninglessvanity]

Thanks, that looks like what I'm looking for, though I wish I didn't have to format the existing drive. I guess I see backup and restore in my future...