When it comes to the BSD operating systems, DragonFlyBSD’s HAMMER2 is one of the most interesting innovations. HAMMER2 supports online deduplication, clustering, multiple mountable file-system roots, snapshots, compression, encryption, extensive checksumming, and other features. Over the past decade it’s evolved quite nicely and in recent days has seen further enhancements…

Source: Phoronix – DragonFlyBSD’s HAMMER2 File-System Seeing New Improvements, Initial Recovery Support