Will you need hardware or support for your project? The FreeNAS team would like to remind you that the FreeNAS project is sustained through the sale of awesome storage products that leverage the power of FreeNAS.
So, if you end up loving FreeNAS (you totally will), and you want a dedicated home storage device that is specifically designed for it, check out the iXsystems FreeNAS Mini.
If you need something a little more robust and rackmountable for a simple file server or other non-critical storage application, iXsystems provides FreeNAS Certified Storage.
And, if you require enterprise-class storage with high availability, 24/7 support, and enough performance to back a whole virtual infrastructure, you'll want to look into TrueNAS.