Hi,
The GSS 3.x Support Matrix below shows that Server 2016 is supported from GSS 3.1 MP5 onwards. But only for the client installation, not for the server installation.
https://symwisedownload.symantec.com//resources/sites/SYMWISE/content/live/TUTORIALS/111000/HOWTO111528/en_US/Platform%20Support%20Ghost%20Solution%20Suite%203.0,%203.1%20and%203.2.pdf?__gda__=1543706668_d94d85eaec899a306c6a9d1c554efbb9
If it shows Server 2016 Standard but not Datacenter, then technically it isn't supported although you can always take the chance and install the agent on it. Be aware though that you will not receive support from Symantec for an unsupported installation.
Thanks!