How to setup Hardware RAID 6.

I have a Dell PowerEdge 6400 server, which I’d like to setup a Hardware RAID 6 on I have 9 SCSI Hard Drives 18.5GB each, attached to either Adaptec AIC-7880 or Adaptec AIC-7899.

I have tried going into the RAID cards, sadly I wasn’t able to find any thing which would allow me to setup any kind of RAID. I don’t have nor was able to locate any disks