Poor raid 1 performance?

Hi there,

I am planning on building a new computer system. Given the current cheap price and massive capacity of hard drives, I am thinking of using a raid array.

To me, raid 1 seems the ideal solution. Raid 1 greatly improves data security, which is very important to me (and why I would never go with raid 0). Theoretically, the performance of raid 1 should also be what I want. Reads can be split across the two drives, leading to greater read performance, while write performance might be slower. Given the way I use the computer, read performance will help when it boots up, loads applications, loads games, etc. On the other hand, the poorer write performance will be less of an issue as much less is written to the disk during typical use, and I tend to just leave the computer when installing new programs (when large amounts of information does need to be written to the disk).

Despite raid 1 seeming to be ideal, the read performance on current motherboard raid chipsets shows little to no improvement compared to that of a single drive:

http://techreport.com/reviews/2004q2/chipset-raid/index.x?pg=1

Is it possible to get improved read performance using raid 1??
.

Relevant Pages

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