Re: Poor raid 1 performance?

> Yes, but also _any_ read is done twice, on both channels and both
mechanisms
> (and furthermore they are then checked for equality between, which adds a
> step, which could be a reason for misperformance).
>
> I do not see why you could see improvements, any other things being equal
of
> course.

http://www.9to5computer.com/atto/Comparing-Raid-Configurations.htm
http://www.storagereview.com/guide2000/ref/hdd/perf/raid/levels/singleLevel1.html

With a good controller, sequential read performance equals that of a single
drive, random read performance scales up with number of drives in a RAID.


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