wallyrp
You can use the SATA drive(s) in 6.5RC1 only in compatibility mode (PATA I think it's called).
You will have some problems upgrading from that to sme 7.0 (SATA) when it is released (some/many months away as yet).
Alternatively you don't need to trash the $8000 server, just put IDE drive(s) in it and upgrade them to SATA later when fully supported.