I've got 10 Sas Savvio 15k.1 and an LSI hardware RAID controller.

For the price of Sas I'd say the moneys better spent for VelociRaptors and if you got the cash a Hardware RAID controller.

Sas is really server oriented and in some cases slower than SATA, at least that's what the PR guy I got the Savvio From.

I'm getting ready to fre them up in hardware RAID 0, 1 and probably a few other configurations if you want more feedback later.

I tried two onboard Sas ports on the P6T Deluxe and they ran about like VelociRaptors.