Hibernate file is for a sleep mode, it can be turned off if needed.
Page file is more important thing, it will be used if you hit the limit of the ram or its used for those programs in background which are not used at this moment.
If you have 16GB of Ram it can be turned off totally (but personally i don't recommend it), the size can be also set up manually so it will be less that 16GB, also you should be able to point which partition will be holding it (by default its the system partition).
To access pagefile settings, press the Windows + Pause Break keys > Advanced system settings > In the Performance section click the Settings… button > Advanced tab > Change button.
run command line and type:
powercfg.exe /hibernate off