NTP setup - possible issues

[Jacob_W]

Hi,

As we're not using NTP servers for our security GWs, we're experiencing some problems with logs synchronizations, etc. due to clocks mismatch.

I'm planning to setup up all the GWs and mgmt server to use corporate NTP servers. 

My question is what issues might pop-up? Differences between clocks on specific GWs are even few hours. 

Does the NTP configuration imply GW reboot? 

Thanks