Once again, what is the point of disabling those services? To shed a few milliseconds of time off of a startup? To "increase performance"? Because it most likely won't do either of those things, and even if it does it's nearly impossible to measure or notice, so why bother? It's not doing any good. There's no benefit out of it. You've yet to show any proof that there's a benefit to doing it.
I personally disabled the defrag service because I pay for O&O commercial defrag software. No point in having O&O and Windows try to defrag together right? It's my understanding that hard drives are bad at trying to do 2 intensive things at the same time.