Oh yeah, sure. There are 5 types of raid (I believe ). There is raid 0, 1, 5, 6, and 1+0. The three most comon types are 0, 1, and 5. First of all I'll teach you about raid 0, the most comonly used. Raid 0 is where you have two or more of the same hard drives (I will ude two in this example), and a raid controller (every raid setup needs a raid controller). Say you save a file of 20mb. That will go to the raid controller instead of directly to the hdds. The raid controller will split the file of 20mb into 2 files of 10mb. One of the 10mb files will be saved to one hdd, and the second 10mb to the other hdd. That means you get double the speed because the hdds are only saving one 10mb file aposed to a 20mb file. Once you load that file, the raid controller will pull the two files from the two hdds and join them back together to have you original 20mb file. There are pros and cons to this setup though.
Double the read and write speed.
I'm not sure there are any others than that big one.
Double the likelyness for the setup to fail (as you have two hdds, they are two times as likely to fail)
If one does fail, you will not be able to get the information back because you have only half of the information stored on the hdd that is left.
Next post I'll tell you about 1 and 5. Sorry if my explanation is long and hard to follow. Please tell me if you don't get anything so far.
Go ahead to explain 1 and 5 too