But IMHO, I do not use RAID setups on Home Systems. One reason is due to the nature of the Cavernous availability of today's HDD is not really a need for them. Other, is the way the files are stored, if one drive bites the dust, depending of RAID setup, you loos it all. If they are mirror, just cuts your size by half.
I rather deal with individual discs, in case if one fails, I do not at least I can recover what is on other drives.
A nice thing that you can do is, use a secondary drive to place your Page and/or Swap file. That will free up a drive to read/write on a application and another drive that plays as Virtual RAM. That will boost some performance, no for much, but some.
I did my home setup with one drive dual boot with Win and Linux and used the rest for storage. You could do RAID on the storage, but as I said before, I do not really see a real gain to set up a RAID system on home computer without an external media backup (tape, DVD, etc..)
I use Mandriva Linux 2010 and I can say is much easier to use and setup than the *buntus...
simply put. I have 2 HDs in RAID 0 a 3rd HD for back-ups and a 4th HD for media. I backed everything up and created a partition on the "back-up" drive. I wanted to install ubuntu to it. My Main OS is XP and is on the RAID array. I booted from the latest ubuntu .iso and found the 50gb partition I wish to use on the "back-up" drive. I selected it and told it to install. It finished installing and said to reboot, took the disk out, and the system booted right into windows. When I went into the file browser, the whole "back-up" disk does not show up now. Plus the computer won't propmt me to boot to ubuntu. Anyone have any suggestions on how I can get my disk back? and how I can get it to dual boot.
Notes: I did not install any "raid drivers" before the OS install because I figured ubuntu didn't need them. I think it's possible "grub" did not recognize the windows raid partition and got lost somehow.