SATA mirrror performance

[Ashley Moran]

On Sep 17, 2007, at 2:52 am, João Carlos Mendes Luís wrote:

>    After using gmirror, now I have the RAID in its full performance,
> getting over 60Mbytes per second at raw reads, very near the 70MBps  
> from
> the specs.  Could only be better if we already had NCQ working.
>
>    Now the question: Is this expected?  Is ataraid somehow deprecated?

I had no end of trouble with ataraid.  At first I was under the  
impression it was the best solution, seeing as it has some support  
from the motherboard.  But after posting to a list (possibly - 
hardware) a long time ago, all the answers I got were to use  
gmirror.  I don't know that ataraid is deprecated, but I can't think  
of any reason to use it.  Fortunately (as you have found), turning an  
ataraid mirror into a gmirror is easy.  I would just use gmirror and  
not worry about it.

Ashley