when you say VRAID1 and VRAID5 it sounds like you are talking about an HP EVA san, these sans virtualise all san volumes accross all disks within their own disk group, raid1 is faster than raid5 but not as fast as raid10. Das is fast but non useable by any other server or host as it is connected directly to the 1 server, and you are limited/restriced to not be able to use clustering is required. San is the best connection type also with sql you know it is better to have your logs and databases on seperate volumes, for speed etc..
if performance is a real issue make sure you have an active/active san configuration, set all your fabric speeds to a fixed speed and not auto negotiate, ensure your server has either mpio or some form of secure path app for the san volumes.
The basic methodligies do not change between local storage and SAN storage. RAID 1 (and RAID 0+1) still has faster for writes then RAID5 as there is no parity to calculate.
This tip on SearchSQLServer.com may help you out.