sshfs is an external tool and can be installed with
sudo apt install -yq sshfs.
You server is at
example.com. To mount a directory from server, execute
sshfs example.com:<remote dir> <local dir>.
<remove dir> and
<local dir> must exist. And
<local dir> must be empty.
Disk space is occupied in the remote server, not in local.
To unmount, use
fusermount -u <local dir>.
To auto reconnect and periodically ping server, in order to prevent disconnection. Add this flag
-o reconnect,ServerAliveInterval=30,ServerAliveCountMax=100 after