Thread:Project:Support desk/How to store images of Mediawiki on separate servers?/reply (3)

You could mount a remote filesystem on the local server using NFS, but that may not work on servers not placed on the same local network.

Another way would be to continue storing images locally, and have some sort of proxy cache (in $wgUploadPath address) for when a image is requested, if it doesn't exist, request the image to your wiki server and store it locally, so next requests for that image serve the saved image instead of requesting it again to your wiki. But that would be problematic if you upload a new version of the same image, since it would not notice the update, unless it's intelligent enough to periodically check if a new version of the file exists.