[CentOS] looking for RAID 1+0 setup instructions?

> what is your purpose with this Level? I'm asking because I had done some 
> raid level tests some time ago with hardware raid controllers/systems 
> from 3ware, sun and iscsi-raidsystems and some softwareraid setups.
>   

The purpose of using RAID 10 is, of course, performance coupled with 
full redundancy.

> I haven't seen significant performance differences using different 
> levels. (I'm not comparing the controllers.)
>   

Did you test RAID 10 also?

I am using software RAID 10 with CentOS 5.3 and I surely did see a 
*huge* performance increase with RAID 10 compared to RAID 1 only.