Which are the components installed in the server?
PTP will show off if you install it because truscan will not work with it.
But application and device control policy will work
If you are planing to install NTP first you have to do a through test in test environment since the firewall can block any type of traffic and ensure that all traffic which is req. to you is allowed.There are some default rules present for fire wall fore more info click
here
What will be role of it?
Depending of the role of the Server you may have to exclude some directories and files from scanning (For some roles it will do the exclusions automatically)