Is RAID really useless?

[dejunjing]

Western Digital's Raptors in RAID-0: Are two drives better than one?

According to this article, RAID o is useless, and RAID 1 improve the performance only slightly. The most worthy point of RAID 1 is just provide a backup. Are these words reasonable?

BTW, I have a MAxtor UATA 133, do I need to buy a SATA HD to further boost performance?

Thanks.

 

[natto fire]

1) You already posted this in General Hardware

2) CPU forum is not the best place to ask questions about HDD. (That's what General Hardware is for)