FreeNAS Manager is an unofficial management app that can be used to monitor and, to some degree, control a FreeNAS server. It is tested and working on FreeNAS 9. 2, 9. 3, 9. 10 10, and 11 (see below for version-specific notes). Features: View basic server info (IP, version etc. ). View volumes and their storage space status. Initiate scrub on volumes.