How to make a raid drive

I have just bought a Segate 2TB goflex free agent drive with firewire 800. Could I use it as RAID drive ? If so , how could I format as RAID Drive. Please reply at earliest possible.

RAID over FW800 is slower than what your drive can do.
If you want RAID, then go SATA only, with controller and native cases.
My advice, avoid most name brand (WD, LaCie, Seagate) external cases.

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