I recently bought two LaCie Little Big Disks SSD Thunderbolt and wanted to set them up as a RAID setup to get the 800MB/s read write. Unfortunately the documentation on LaCie's website was horrible - nor did Google offer much. So here I am - offering my two cents on the setup.
For your information, several days after I originally posted this article feedback came in from readers requesting more screen shots and "better" screenshots. So, I have finished updating the document with awesome screens of the Disk Utility process and more. Enjoy.
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This could be useful for you even if you don't have a a LaCie little big disk. It would work with other Daisy Chain models and creating a RAID setup for them.
Step 1: Buy Expensive Drives & 2 Thunderbolt Cables
The drives are $899 ea and the cables are $49 ea. Buy two of each.
Step 2: Plug Stuff In
1. Connect a thunderbolt cable to your MacBook Pro, iMac, MacMini, or MacBook Air (sorry no Mac Pro support).
Cable 1: MBP (Thunderbolt port) -> 1st LaCie LBD Thunderbolt Port 1
Cable 2: 1st LaCie LDB Thunderbolt Port 2 -> 2nd LaCie LBD Thunderbolt Port 1
Step 3: Disk Utility & Delete Exist RAID setups
You'll see a whole bunch of drives show up (6 new items - 4 drives 2 raid setups). Delete the RAID setups.