Wikipedia
FreeNAS
FreeNAS is a free and open-source software network-attached storage (NAS) system based on FreeBSD and the OpenZFS file system. It is licensed under the terms of the BSD License and runs on commodity x86-64 hardware. FreeNAS supports Windows, OS X and Unix clients and various virtualization hosts such as XenServer and VMware using the SMB, AFP, NFS, iSCSI, SSH, rsync and FTP/TFTP protocols. Advanced FreeNAS features include full-disk cryptography and a plug-in architecture for third-party software.