Rockstor — A Btrfs-based NAS distribution

We use Rockstor in our office as a place to gather all those drives that came out of other servers, replaced drives, forgotten external disks and so on.

Being able to use different size disks in a RAID is very cool and Rockstor itself is easy and straightforward to use. It is so easy that it is pretty much set and forget.

We looked at freenas, unraid, openmediavault and some others.
What set Rockstor apart for us was the team behind it, whose members are awesomely responsive and very knowledgable and kind, as well as the aforementioned ability to mix different sized disks. This is similar to Unraid, but unraid costs money and development seems slow relative to the iterations and versions released by rockstor.