[CentOS] Serial ATA hardware raid.

Harald Finnås wrote:

> Just have to mention it while I remember. If you decide on the 3ware 
> 9500s controller, be aware that you HAVE to do some manual tuning. It 
> performs like crap out of the box.

I was wondering if you could expand on that.  What type of array(s) are 
you using, which controller and any specific settings?