ZFS was started around 2001 when SSDs weren’t really a thing. It’s goals were, amongst other things, to manage multiple volumes (providing redundancy), to be re

ZFS was started around 2001 when SSDs weren’t really a thing. It’s goals were, amongst other things, to manage multiple volumes (providing redundancy), to be reliable (most filesystems aim for this), and to support cheap snapshotting. The last two we’re supposed to come from being copy-on-write and this model was an advantage when SSDs became popular as it worked a bit better with their semantics.