Re: Poor raid 1 performance?

Peter wrote:

>> Can anyone suggest a raid 1 array that has improved performance?
>
> Are you talking about "sequential read performance"? No, I don't know any
> RAID1 product with that characteristic. But you can RAID0 instead (I know,
> there is no redundancy), that definetely improves that type of performance
> you are looking for.

I've been following this here a bit, and I also don't understand why RAID1
can't provide the same increase in speed as RAID0. With RAID0, you have the
data in stripes over several disks. With RAID1, you have all the data over
several disks, which should make it possible to read a RAID1 array
similarly to a RAID0 array (that is, the controller could just read the
data arbitrarily from each of the two disks, and could, so to speak,
"virtually stripe" them for reading).

Gerhard
.

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