I personally wouldn't use raid0 in Linux. My understanding is that the performance benefits are negligible and the possibility of data loss is pretty high. I use raid1 on a number of systems and am pleased with the performance over all.
On a related note, I just built a Gentoo server with lvm2 on top of raid1. The boot and swap partitions are just raid1 (md0 and md1). Everything else in an lvm2 volume group on md2. It was a pain to set up and you have to use an initrd under Gentoo to boot from lvm but it works. Being able to resize "volumes" on the fly is pretty useful sometimes. Another useful tool that Windows doesn't have. ~bernie
