Best options for external RAID array? USB 3, bus powered?

I'm looking for something that I can plug into a USB3 or Thunderbolt (or Firewire with an adapter) on my rMBP and ideally mount a RAID-1 on my system.

http://www.wiebetech.com/products/ToughTech-Duo-3SR.php
I found this, but it needs an external power source.

Does anything exist that's kind of like what I'm describing? Most RAID enclosures are for 3.5" drives, which isn't a dealbreaker, but still.


Let me know, thanks! This would mostly be for reghosting a system that was lost or damaged when traveling. So, something redundant that wouldn't be easily corrupted is ideal

 

Wow, that's great!!!
Thanks for the suggestion