One thing Hammer2 has going for it, is license. It's the first next gen filesystem release that is not marred in some way by licensing (marred from the perspect

One thing Hammer2 has going for it, is license. It's the first next gen filesystem release that is not marred in some way by licensing (marred from the perspective of adoption). Because it uses the BSD license, it can be adapted to work in more mainstream OSes without problems. If OpenBSD would adopt it for example, it would really help it to cover a few more use cases. I'd also expect some efforts from NetBSD, FreeBSD and Linux. Even Apple and Microsoft could adopt Hammer2 and just use the original source code, although they have no particular reason to do so.