|The question indicates a shortage of understanding about server security.|
What do you think you are protecting by this request?
System should only contain the boot files and is not recommended to be used for anything else.
Last person to post about locking out local admins cut off all admin access to the server which required a reload of the entire system from scratch.
A local admin wouldn't have any reason to browse to or alter the system partition.
If you trust them to be local admin there is no reason to restrict them.
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