TrueNAS CORE is a free, open-source NAS OS developed by iXsystems based on FreeBSD, and uses the ZFS filesystem. TrueNAS can run on virtually any consumer hardware, and is capable of data-center level data protection through using a combination of RAID, Replication, Snapshots, and much more advanced features.
Where the data will lie
Users, Groups, and Permissions
Creating users, groups, and setting Access Control Lists (ACL)
Sharing Datasets over the Network
Cron Jobs, Snapshots, Backup, SMART Tests, etc