Opportunistic locking


I'm trying to disable opportunistic locking, and I've been reading documentation in this same foro about it. My question is the next:

I'm using mapped drives to access to vision files (not acuserver).

Would it be enough by turning off opportunistic locking from client pc, or should I turn off opportunistic locking in the 'server' machine too?

The problem is that I never know if the opportunistic locking is disabled in the server machine, while I'm running the application from the client.

Thanks and regards