@pilipp_edv said in general questions about storage / master storage nodes:

After that, I configured the windows DHCP servers in the other locations to point to the main FOG server.

FWIW: You can (should) point the remote dhcp server to the remote storage node so the clients doesn’t need to transfer the ipxe boot image across your wan. The storage node will instruct the clients to “check in” with the fog master node.

The part you are missing is the FOG server plugin “Location”. With the location plugin you first identify your different locations. Then assign storage nodes to the “location” then assign existing client computers to the location. As you full register new clients there will be an added prompt for location during registration. This plugin pulls all of the bits together to make the clients find the proper storage node.