If a remote file server has created a directory and put a space character in the path it can be a bummer to work configure the /etc/fstab config file - at least until you know how.

Attempting to mount /storage/directory with spaces/ will fail if you simply escape the space (with a backslash).

Just use '\40' in place of the space like this:

myserver:/storage/directory\40with\40spaces/ ...