Don't worry you help to solve it !
I fact you have choice for a network link :
For example my NAS is named z: on network drive but dont work in UNC link on DR.
So i just replaced the name of the network drive by the ip adress.
This is mean :
Before -> z:\Données\...............
Now -> my nas ip address\Données\..............
Now DR is ok, but i clearly don't have this issu on vray , i can use z: , \\NAS , ip adress, all this link in UNC work good.