|I think you need a minimum of 4 drives for RAID 1+0. Now I am not sure about your question, are you looking to setup RAID 1+0 in each of your SANs units or are you looking to setup RAID 1+0 with the SANs them selves? The later is harder and risky so I would stick with RAID within the SANs units.|
As for performance RAID 0 is the fastest but it has NO fault tolerance. RAID 1 is slow and halves your disk space but has the highest (50% loss) fault tolerance. Every thing else is in between being that the closer you move to fault tolerance the slower the performance and vice-verse. This is where RAID 1+0 comes in because it uses a set of parity drives to get the best of both worlds. Not sure if that answers your question.
Also, I would steer clear of Hyper-V right now unless you have a Microsoft Consultant to help you. It is not support by all BIOS and you might find it cheaper to go with a Citrix Xen server instead.
P.S. Why are you looking to put your live data on a SANS unit as apposed to local drives on the SQL server?
Performance of a network drive will never match that of local drives.
Is it for security reasons to make sure your data does not reside locally in-case the box gets hacked?
Or, are you planning on setting up more than one SQL server box which will access the same SANS?