In an environment where there are agents of mixed versions 2.0 and <2.0, it may be necessary to manually add a filesystem item check. Doing so however raises "Item with key "vfs.fs.size[/,free]" already exists on "$host" as an item created from item prototype." if there is a host with an agent version >=2.0 in the template set, making it impossible to monitor filesystems on agents <2.0 unless moved to separate sets of templates - which would rapidly create an unmanageable environment.