>> Note that this doesn't really at all if you put them all on the same
>> physical drive.
>
> Well, the main reason for using X number of tempdb data files per socket
> is
> not really to address any disk storage performance problem per se. Rather,
> it's to resolve a SQL Server internal contention issue on the shared
> tempdb
> metadata structures (e.g. contention on the allocation pages). So if that
> metadata contention is the problem, having a better storage system doesn't
> , but having multiple data files on the save drive still s.

True, though I haven't encountered that yet...