FreeNAS is built based on FreeBSD and OpenZFS file system and can be used to share data over the network. Since FreeNAS is based on ZFS, it retains all of its features such as large storage capacity and the ability to address complex storage issues. It is an effective tool not just for storing data but also to protect it and take back-up. The data backup is made by replicating the file system through snapshots. Data protection is assured by encrypting the data.