I've got a an ESX VM and the storage is provided by a decent SAN. On a physical server, I would ordinary install SQL Server across 3 drives; one for the OS + SQL, one for data, and a third for log files. It's a fairly common approach that offers good performance.
However, is there any benefit to this approach when installed on a SAN? If I were to create 3 virtual disks to mirror the physical server approach, I am not going to yield any extra performance because all 3 disks would be drawn from the same SAN, surely?
So what is the best configuration for SQL Server on a VM/SAN?