Sql Server disk configuration

Being a business application developer, I don't have much understanding in raid configuration. Having said that, one invaluable piece of advice from SQL Server configuration is to separate disks for .mdf (data) and .ldf (log) files is a best practise from performance point of view. This may not fetch much benefit (I guess) if the drives are logical but helpful if they are physical.

Please take this with a spoonful of salt.

Go with John Tsioumpris setup suggestion.

I'd likely put the OS + Logs on one disk, as once your OS starts up + loads the OS into memory, your OS disk access should be minimal... well... depending on if you have enough memory to keep from swapping... and have no other disk hog applications running that produce massive i/o thrash on the OS disk.

Information missing to say  for sure, size of available drives,
Server specs.
The log files are potentially high I/o placing them in the same spindles as the os where commonly the page file is, when the resources are need for swap, the decline in performance could be in geometric proportions.
Size of databases involved, transaction log sizes can be managed by SQL jobs for transaction log backups on a frequency.

Echo your first indicated option.

Thanks a lot I will go with option 1