Many thanks to all responders.

Mr Uhring was quite correct, when he wrote


The application with which I am working demands to contain data on
/server1 directory, but on the system I use for test, is not room to
contain these 200MB+ (on hda5). So I already have move to /var/server1
but the app cannot be pointed there by itself.

The symbolic link redirects the app and all is well.

When it is found to work, we place the datas on a file server and then
mount /server1 to that machine and the app should continue to function
if file sharing of it is correctly done.

Again, thanks to you all.