I don't want to be trolling either, but a simple Google search gives you really detailed answers. Or just look at Wikipedia: https://en.wikipedia.org/wiki/ZFS h

I don't want to be trolling either, but a simple Google search gives you really detailed answers. Or just look at Wikipedia: https://en.wikipedia.org/wiki/ZFS https://en.wikipedia.org/wiki/ZFS Some highlights: hierarchical checksumming, CoW snapshots, deduplication, more efficient rebuilds, extremely configurable, tiered storage, various caching strategies, etc.