Advantage and disadvantage of using the utility RAID

Hello, I do need a little help.
I just got a new Mac Pro 8Core, with 6x8 GHz ram, two 2TB hard drives. I would love to know what would be the advantage doing RAID using the mac utility. Will the computer work faster and by aprrox. how much? Is there a disadvantage. Is it worth dong it?
Thank you in advance.
ME

In short, you can improve the performace of your mac by "striping" your drives in a RAID 0 configuration, but i would strongly advice against it, as it is not a fault tolerant configuration, meaning that if one of your drives fail, it will mean you loose all your data (yes even the data written to the healthy drive) because of the way it is written to disk in that config. And seeing you are using 2TB drives, I assume that is also your main storage.
If you are looking to improve the performace of your mac you should rather look in to getting a separate solid state drive for the system and application, and keep your documents and media on the 2TB drives. A SSD will usually reduce both the time it takes to boot your system, and the time to launch applications among other things, and is the single best upgrade for your already spiffy system. A 40GB drive should be just fine, but you would want to do some research first , as the performance can vary a lot among manufacturers.

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