I just bought 2 kingston hyperX ssds 120gb and i am wandering about raid 0 and should i do it i can back it up i already have 1tb seagate barracuda hardrive.
Well, instead of 1 120gb drive you'll have 1 240 drive. This means in return that if 1 drive fails, ALL the data is gone.
Do a raid 0+1. You'll get the benefit of the speed and security
pros: you will have one ~240 gb drive running at ~2x the speed.
ons: if one drive fails (which is rare) you will loose everything.
some solutions: raid 0 the ssd's and use a normal hdd as backup for important data. raid 5 (you will need one more drive) will provide peed increase, and allow one drive to fail. or raid 1+0 (also known as raid 10). you can also do raid 0+1 however the fault tollarence is a tiny bit less.
anyway, it boils down to one simple question... do you store data on your computer that is very valuable? and if so can you keep it backed up properly?