Re: Poor raid 1 performance?

In news:PMydnXt6U44VbxPenZ2dnUVZ_smdnZ2d@xxxxxxxxxxx, Bob Willard wrote:
> since RAID1 has twice as many on-disk read channels
> and twice as many seek mechanisms.

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.

What am I missing here?


Antoine

.

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