Linux does a far better job managing FakeRaid than any Software Drivers. I know that Disk Partition software in SUSE, Fedora, Debian Lenny+ and Mandriva provide Raid Array Setup More here

Setup and RAID0 (striped disks) This setup can require three disks – twins for the Level-0 and the third to create a boot directory (/boot) because /boot cannot exist on a drive configured entirely for level-0, but you can create a level 1 (Raid Mirrored) partition on both drives and place /boot directory there making it Bootable (fdisk “a” option) then make that partition Raid Auto-Detect (fdisk “t” and “fd”). I’m using a Gentoo (console only) Rescue Boot CD for one setup. A LiveCD of the Distro you want to install by opening a terminal window to prepare the disks, but you may be required to reboot after disk preparation. This is for Debian Lenny amd64 Net-install and there is no Livecd.