Great I think I will order the system tomorrow. I hope the IDE thing will work otherwise I will go to find a second hand Adaptec SCSI card with an cheap second hand SCSI disk.
The AMD 64 X2 4000+ is a good suggestion especially cause the low power usage and special price.
The EONstor seems like a good option for you. I didn't realize that the performance of the SAS onboard controller was so bad.
The vmotion thing is pretty cool indeed. Let me how it works out!