

Is WordPress running in docker or on the host is?
What you could do is set up and NFS or smb share on the ote other server, move all the media to that share on the file server and then mount the NFS/b share to the folder on the WordPress server.
Set up the NFS/smb share to mount at boot. WordPress shoudnt wvwn notice the difference.
I scored some new WD 14tb drives for $120 US last October, and I am glad I did! Was a hell of a deal.