While,I didn't go RAID because I thought ATA 100 would be plenty fast for the price, besides I can probbably get an ad-in RAID card or SCSI card. However, if your only reason for RAID is mirroring files, I agree it is quite useless for me. Since it also allows to speed up you hard drive(writting smaller chunks to multiple drives) then it would probbably be worth the cost for a cheap up-grade when ATA 200 comes out
.
Logan